| 1 | /* ======================================================================== *\
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| 2 | !
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| 3 | ! *
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| 4 | ! * This file is part of MARS, the MAGIC Analysis and Reconstruction
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| 5 | ! * Software. It is distributed to you in the hope that it can be a useful
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| 6 | ! * and timesaving tool in analysing Data of imaging Cerenkov telescopes.
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| 7 | ! * It is distributed WITHOUT ANY WARRANTY.
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| 8 | ! *
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| 9 | ! * Permission to use, copy, modify and distribute this software and its
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| 10 | ! * documentation for any purpose is hereby granted without fee,
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| 11 | ! * provided that the above copyright notice appear in all copies and
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| 12 | ! * that both that copyright notice and this permission notice appear
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| 13 | ! * in supporting documentation. It is provided "as is" without express
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| 14 | ! * or implied warranty.
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| 15 | ! *
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| 16 | !
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| 17 | !
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| 18 | ! Author(s): Josep Flix 04/2001 <mailto:jflix@ifae.es>
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| 19 | ! Author(s): Thomas Bretz 05/2001 <mailto:tbretz@astro.uni-wuerzburg.de>
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| 20 | ! Author(s): Sebastian Commichau 12/2003
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| 21 | ! Author(s): Javier Rico 01/2004 <mailto:jrico@ifae.es>
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| 22 | ! Author(s): Markus Gaug 01/2004 <mailto:markus@ifae.es>
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| 23 | ! Author(s): Florian Goebel 06/2004 <mailto:fgoebel@mppmu.mpg.de>
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| 24 | !
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| 25 | ! Copyright: MAGIC Software Development, 2000-2004
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| 26 | !
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| 27 | !
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| 28 | \* ======================================================================== */
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| 29 | /////////////////////////////////////////////////////////////////////////////
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| 30 | //
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| 31 | // MPedCalcLoGain
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| 32 | //
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| 33 | //
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| 34 | // This task is devide form MPedCalcPedRun, described below. However, It
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| 35 | // calculates the pedstals using the low gain slices, whenever the difference
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| 36 | // between the highest and the lowest slice in the high gain
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| 37 | // slices is below a given threshold (SetMaxHiGainVar). In this case the receiver
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| 38 | // boards do not switch to lo gain and the so called lo gain slices are actually
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| 39 | // high gain slices.
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| 40 | //
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| 41 | // MPedCalcLoGain also fills the ABoffset in MPedestalPix which allows to correct
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| 42 | // the 150 MHz clock noise.
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| 43 | //
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| 44 | // This task takes a pedestal run file and fills MPedestalCam during
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| 45 | // the Process() with the pedestal and rms computed in an event basis.
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| 46 | // In the PostProcess() MPedestalCam is finally filled with the pedestal
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| 47 | // mean and rms computed in a run basis.
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| 48 | // More than one run (file) can be merged
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| 49 | //
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| 50 | // MPedCalcPedRun applies the following formula (1):
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| 51 | //
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| 52 | // Pedestal per slice = sum(x_i) / n / slices
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| 53 | // PedRMS per slice = Sqrt( ( sum(x_i^2) - sum(x_i)^2/n ) / n-1 / slices )
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| 54 | //
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| 55 | // where x_i is the sum of "slices" FADC slices and sum means the sum over all
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| 56 | // events. "n" is the number of events, "slices" is the number of summed FADC samples.
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| 57 | //
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| 58 | // Note that the slice-to-slice fluctuations are not Gaussian, but Poissonian, thus
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| 59 | // asymmetric and they are correlated.
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| 60 | //
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| 61 | // It is important to know that the Pedestal per slice and PedRMS per slice depend
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| 62 | // on the number of used FADC slices, as seen in the following plots:
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| 63 | //
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| 64 | //Begin_Html
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| 65 | /*
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| 66 | <img src="images/PedestalStudyInner.gif">
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| 67 | */
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| 68 | //End_Html
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| 69 | //
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| 70 | //Begin_Html
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| 71 | /*
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| 72 | <img src="images/PedestalStudyOuter.gif">
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| 73 | */
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| 74 | //
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| 75 | // The plots show the inner and outer pixels, respectivly and have the following meaning:
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| 76 | //
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| 77 | // 1) The calculated mean pedestal per slice (from MPedCalcFromLoGain)
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| 78 | // 2) The fitted mean pedestal per slice (from MHPedestalCam)
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| 79 | // 3) The calculated pedestal RMS per slice (from MPedCalcFromLoGain)
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| 80 | // 4) The fitted sigma of the pedestal distribution per slice
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| 81 | // (from MHPedestalCam)
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| 82 | // 5) The relative difference between calculation and histogram fit
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| 83 | // for the mean
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| 84 | // 6) The relative difference between calculation and histogram fit
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| 85 | // for the sigma or RMS, respectively.
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| 86 | //
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| 87 | // The calculated means do not change significantly except for the case of 2 slices,
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| 88 | // however the RMS changes from 5.7 per slice in the case of 2 extracted slices
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| 89 | // to 8.3 per slice in the case of 26 extracted slices. This change is very significant.
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| 90 | //
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| 91 | // The plots have been produced on run 20123. You can reproduce them using
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| 92 | // the macro pedestalstudies.C
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| 93 | //
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| 94 | // Usage of this class:
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| 95 | // ====================
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| 96 | //
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| 97 | // Call: SetRange(higainfirst, higainlast, logainfirst, logainlast)
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| 98 | // to modify the ranges in which the window is allowed to move.
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| 99 | // Defaults are:
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| 100 | //
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| 101 | // fHiGainFirst = fgHiGainFirst = 0
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| 102 | // fHiGainLast = fgHiGainLast = 29
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| 103 | // fLoGainFirst = fgLoGainFirst = 0
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| 104 | // fLoGainLast = fgLoGainLast = 14
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| 105 | //
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| 106 | // Call: SetWindowSize(windowhigain, windowlogain)
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| 107 | // to modify the sliding window widths. Windows have to be an even number.
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| 108 | // In case of odd numbers, the window will be modified.
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| 109 | //
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| 110 | // Defaults are:
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| 111 | //
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| 112 | // fHiGainWindowSize = fgHiGainWindowSize = 14
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| 113 | // fLoGainWindowSize = fgLoGainWindowSize = 0
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| 114 | //
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| 115 | // Input Containers:
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| 116 | // MRawEvtData
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| 117 | // MRawRunHeader
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| 118 | // MGeomCam
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| 119 | //
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| 120 | // Output Containers:
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| 121 | // MPedestalCam
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| 122 | //
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| 123 | // See also: MPedestalCam, MPedestalPix, MHPedestalCam, MExtractor
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| 124 | //
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| 125 | /////////////////////////////////////////////////////////////////////////////
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| 126 | #include "MPedCalcFromLoGain.h"
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| 127 | #include "MExtractor.h"
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| 128 |
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| 129 | #include "MParList.h"
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| 130 |
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| 131 | #include "MLog.h"
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| 132 | #include "MLogManip.h"
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| 133 |
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| 134 | #include "MRawRunHeader.h"
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| 135 | #include "MRawEvtPixelIter.h"
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| 136 | #include "MRawEvtData.h"
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| 137 |
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| 138 | #include "MPedestalPix.h"
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| 139 | #include "MPedestalCam.h"
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| 140 |
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| 141 | #include "MGeomPix.h"
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| 142 | #include "MGeomCam.h"
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| 143 |
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| 144 | #include "MBadPixelsPix.h"
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| 145 | #include "MBadPixelsCam.h"
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| 146 |
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| 147 | #include "MGeomCamMagic.h"
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| 148 |
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| 149 | ClassImp(MPedCalcFromLoGain);
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| 150 |
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| 151 | using namespace std;
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| 152 |
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| 153 | const Byte_t MPedCalcFromLoGain::fgHiGainFirst = 0;
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| 154 | const Byte_t MPedCalcFromLoGain::fgHiGainLast = 11;
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| 155 | const Byte_t MPedCalcFromLoGain::fgLoGainFirst = 1;
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| 156 | const Byte_t MPedCalcFromLoGain::fgLoGainLast = 14;
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| 157 | const Byte_t MPedCalcFromLoGain::fgHiGainWindowSize = 12;
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| 158 | const Byte_t MPedCalcFromLoGain::fgLoGainWindowSize = 14;
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| 159 | const Byte_t MPedCalcFromLoGain::fgMaxHiGainVar = 20;
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| 160 |
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| 161 | // --------------------------------------------------------------------------
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| 162 | //
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| 163 | // Default constructor:
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| 164 | //
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| 165 | // Sets:
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| 166 | // - all pointers to NULL
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| 167 | // - fWindowSizeHiGain to fgHiGainWindowSize
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| 168 | // - fWindowSizeLoGain to fgLoGainWindowSize
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| 169 | //
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| 170 | // Calls:
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| 171 | // - AddToBranchList("fHiGainPixId");
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| 172 | // - AddToBranchList("fHiGainFadcSamples");
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| 173 | // - SetRange(fgHiGainFirst, fgHiGainLast, fgLoGainFirst, fgLoGainLast)
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| 174 | // - Clear()
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| 175 | //
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| 176 | MPedCalcFromLoGain::MPedCalcFromLoGain(const char *name, const char *title)
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| 177 | : fWindowSizeHiGain(fgHiGainWindowSize),
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| 178 | fWindowSizeLoGain(fgLoGainWindowSize),
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| 179 | fGeom(NULL),fBad(NULL)
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| 180 | {
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| 181 | fName = name ? name : "MPedCalcFromLoGain";
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| 182 | fTitle = title ? title : "Task to calculate pedestals from pedestal runs raw data";
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| 183 |
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| 184 | AddToBranchList("fHiGainPixId");
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| 185 | AddToBranchList("fHiGainFadcSamples");
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| 186 |
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| 187 | SetRange(fgHiGainFirst, fgHiGainLast, fgLoGainFirst, fgLoGainLast);
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| 188 |
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| 189 | SetMaxHiGainVar(fgMaxHiGainVar);
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| 190 | SetPedestalUpdate(kTRUE);
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| 191 | Clear();
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| 192 | }
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| 193 |
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| 194 | // --------------------------------------------------------------------------
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| 195 | //
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| 196 | // Sets:
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| 197 | // - fNumSamplesTot to 0
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| 198 | // - fRawEvt to NULL
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| 199 | // - fRunHeader to NULL
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| 200 | // - fPedestals to NULL
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| 201 | //
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| 202 | void MPedCalcFromLoGain::Clear(const Option_t *o)
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| 203 | {
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| 204 |
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| 205 | fRawEvt = NULL;
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| 206 | fRunHeader = NULL;
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| 207 | fPedestals = NULL;
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| 208 | }
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| 209 |
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| 210 | // --------------------------------------------------------------------------
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| 211 | //
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| 212 | // SetRange:
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| 213 | //
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| 214 | // Calls:
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| 215 | // - MExtractor::SetRange(hifirst,hilast,lofirst,lolast);
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| 216 | // - SetWindowSize(fWindowSizeHiGain,fWindowSizeLoGain);
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| 217 | //
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| 218 | void MPedCalcFromLoGain::SetRange(Byte_t hifirst, Byte_t hilast, Byte_t lofirst, Byte_t lolast)
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| 219 | {
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| 220 |
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| 221 | MExtractor::SetRange(hifirst,hilast,lofirst,lolast);
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| 222 |
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| 223 | //
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| 224 | // Redo the checks if the window is still inside the ranges
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| 225 | //
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| 226 | SetWindowSize(fWindowSizeHiGain,fWindowSizeLoGain);
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| 227 |
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| 228 | }
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| 229 |
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| 230 |
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| 231 | // --------------------------------------------------------------------------
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| 232 | //
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| 233 | void MPedCalcFromLoGain::SetMaxHiGainVar(Byte_t maxvar) {
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| 234 | fMaxHiGainVar = maxvar;
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| 235 | }
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| 236 |
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| 237 |
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| 238 | // --------------------------------------------------------------------------
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| 239 | //
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| 240 | // Checks:
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| 241 | // - if a window is odd, subtract one
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| 242 | // - if a window is bigger than the one defined by the ranges, set it to the available range
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| 243 | // - if a window is smaller than 2, set it to 2
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| 244 | //
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| 245 | // Sets:
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| 246 | // - fNumHiGainSamples to: (Float_t)fWindowSizeHiGain
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| 247 | // - fNumLoGainSamples to: (Float_t)fWindowSizeLoGain
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| 248 | // - fSqrtHiGainSamples to: TMath::Sqrt(fNumHiGainSamples)
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| 249 | // - fSqrtLoGainSamples to: TMath::Sqrt(fNumLoGainSamples)
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| 250 | //
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| 251 | void MPedCalcFromLoGain::SetWindowSize(Byte_t windowh, Byte_t windowl)
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| 252 | {
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| 253 |
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| 254 | fWindowSizeHiGain = windowh & ~1;
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| 255 | fWindowSizeLoGain = windowl & ~1;
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| 256 |
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| 257 | if (fWindowSizeHiGain != windowh)
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| 258 | *fLog << warn << GetDescriptor() << ": Hi Gain window size has to be even, set to: "
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| 259 | << int(fWindowSizeHiGain) << " samples " << endl;
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| 260 |
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| 261 | if (fWindowSizeLoGain != windowl)
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| 262 | *fLog << warn << GetDescriptor() << ": Lo Gain window size has to be even, set to: "
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| 263 | << int(fWindowSizeLoGain) << " samples " << endl;
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| 264 |
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| 265 | const Byte_t availhirange = (fHiGainLast-fHiGainFirst+1) & ~1;
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| 266 | const Byte_t availlorange = (fLoGainLast-fLoGainFirst+1) & ~1;
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| 267 |
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| 268 | if (fWindowSizeHiGain > availhirange)
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| 269 | {
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| 270 | *fLog << warn << GetDescriptor()
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| 271 | << Form("%s%2i%s%2i%s%2i%s",": Hi Gain window size: ",(int)fWindowSizeHiGain,
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| 272 | " is bigger than available range: [",(int)fHiGainFirst,",",(int)fHiGainLast,"]") << endl;
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| 273 | *fLog << warn << GetDescriptor()
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| 274 | << ": Will set window size to: " << (int)availhirange << endl;
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| 275 | fWindowSizeHiGain = availhirange;
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| 276 | }
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| 277 |
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| 278 | if (fWindowSizeLoGain > availlorange)
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| 279 | {
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| 280 | *fLog << warn << GetDescriptor()
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| 281 | << Form("%s%2i%s%2i%s%2i%s",": Lo Gain window size: ",(int)fWindowSizeLoGain,
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| 282 | " is bigger than available range: [",(int)fLoGainFirst,",",(int)fLoGainLast,"]") << endl;
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| 283 | *fLog << warn << GetDescriptor()
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| 284 | << ": Will set window size to: " << (int)availlorange << endl;
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| 285 | fWindowSizeLoGain = availlorange;
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| 286 | }
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| 287 |
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| 288 |
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| 289 | fNumHiGainSamples = (Float_t)fWindowSizeHiGain;
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| 290 | fNumLoGainSamples = (Float_t)fWindowSizeLoGain;
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| 291 |
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| 292 | fSqrtHiGainSamples = TMath::Sqrt(fNumHiGainSamples);
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| 293 | fSqrtLoGainSamples = TMath::Sqrt(fNumLoGainSamples);
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| 294 |
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| 295 | }
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| 296 |
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| 297 |
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| 298 |
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| 299 | // --------------------------------------------------------------------------
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| 300 | //
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| 301 | // Look for the following input containers:
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| 302 | //
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| 303 | // - MRawEvtData
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| 304 | // - MRawRunHeader
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| 305 | // - MGeomCam
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| 306 | // - MBadPixelsCam
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| 307 | //
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| 308 | // The following output containers are also searched and created if
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| 309 | // they were not found:
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| 310 | //
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| 311 | // - MPedestalCam
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| 312 | //
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| 313 | Int_t MPedCalcFromLoGain::PreProcess( MParList *pList )
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| 314 | {
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| 315 |
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| 316 | Clear();
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| 317 |
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| 318 | fRawEvt = (MRawEvtData*)pList->FindObject("MRawEvtData");
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| 319 | if (!fRawEvt)
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| 320 | {
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| 321 | *fLog << err << "MRawEvtData not found... aborting." << endl;
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| 322 | return kFALSE;
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| 323 | }
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| 324 |
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| 325 | fRunHeader = (MRawRunHeader*)pList->FindObject(AddSerialNumber("MRawRunHeader"));
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| 326 | if (!fRunHeader)
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| 327 | {
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| 328 | *fLog << err << AddSerialNumber("MRawRunHeader") << " not found... aborting." << endl;
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| 329 | return kFALSE;
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| 330 | }
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| 331 |
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| 332 | fGeom = (MGeomCam*)pList->FindObject("MGeomCam");
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| 333 | if (!fGeom)
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| 334 | {
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| 335 | *fLog << err << "MGeomCam not found... aborting." << endl;
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| 336 | return kFALSE;
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| 337 | }
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| 338 |
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| 339 | fPedestals = (MPedestalCam*)pList->FindCreateObj("MPedestalCam");
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| 340 | if (!fPedestals)
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| 341 | return kFALSE;
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| 342 |
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| 343 | fBad = (MBadPixelsCam*)pList->FindObject("MBadPixelsCam");
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| 344 |
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| 345 | return kTRUE;
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| 346 | }
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| 347 |
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| 348 | // --------------------------------------------------------------------------
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| 349 | //
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| 350 | // The ReInit searches for:
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| 351 | // - MRawRunHeader::GetNumSamplesHiGain()
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| 352 | // - MRawRunHeader::GetNumSamplesLoGain()
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| 353 | //
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| 354 | // In case that the variables fHiGainLast and fLoGainLast are smaller than
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| 355 | // the even part of the number of samples obtained from the run header, a
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| 356 | // warning is given an the range is set back accordingly. A call to:
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| 357 | // - SetRange(fHiGainFirst, fHiGainLast-diff, fLoGainFirst, fLoGainLast) or
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| 358 | // - SetRange(fHiGainFirst, fHiGainLast, fLoGainFirst, fLoGainLast-diff)
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| 359 | // is performed in that case. The variable diff means here the difference
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| 360 | // between the requested range (fHiGainLast) and the available one. Note that
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| 361 | // the functions SetRange() are mostly overloaded and perform more checks,
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| 362 | // modifying the ranges again, if necessary.
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| 363 | //
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| 364 | // A loop over the MBadPixelsCam is performed and bad pixels are set
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| 365 | // to MPedestalPix::SetValid(kFALSE);
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| 366 | //
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| 367 | Bool_t MPedCalcFromLoGain::ReInit(MParList *pList)
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| 368 | {
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| 369 |
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| 370 | Int_t lastdesired = (Int_t)fLoGainLast;
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| 371 | Int_t lastavailable = (Int_t)fRunHeader->GetNumSamplesLoGain()-1;
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| 372 |
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| 373 | if (lastdesired > lastavailable)
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| 374 | {
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| 375 | const Int_t diff = lastdesired - lastavailable;
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| 376 | *fLog << endl;
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| 377 | *fLog << warn << GetDescriptor()
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| 378 | << Form("%s%2i%s%2i%s%2i%s",": Selected Lo Gain FADC Window [",
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| 379 | (int)fLoGainFirst,",",lastdesired,
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| 380 | "] ranges out of the available limits: [0,",lastavailable,"].") << endl;
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| 381 | *fLog << GetDescriptor() << ": Will reduce the upper edge to " << (int)(fLoGainLast - diff) << endl;
|
|---|
| 382 | SetRange(fHiGainFirst, fHiGainLast, fLoGainFirst, fLoGainLast-diff);
|
|---|
| 383 | }
|
|---|
| 384 |
|
|---|
| 385 | lastdesired = (Int_t)fHiGainLast;
|
|---|
| 386 | lastavailable = (Int_t)fRunHeader->GetNumSamplesHiGain()-1;
|
|---|
| 387 |
|
|---|
| 388 | if (lastdesired > lastavailable)
|
|---|
| 389 | {
|
|---|
| 390 | const Int_t diff = lastdesired - lastavailable;
|
|---|
| 391 | *fLog << endl;
|
|---|
| 392 | *fLog << warn << GetDescriptor()
|
|---|
| 393 | << Form("%s%2i%s%2i%s%2i%s",": Selected Hi Gain Range [",
|
|---|
| 394 | (int)fHiGainFirst,",",lastdesired,
|
|---|
| 395 | "] ranges out of the available limits: [0,",lastavailable,"].") << endl;
|
|---|
| 396 | *fLog << warn << GetDescriptor()
|
|---|
| 397 | << Form("%s%2i%s",": Will possibly use ",diff," samples from the Low-Gain for the High-Gain range")
|
|---|
| 398 | << endl;
|
|---|
| 399 | fHiGainLast -= diff;
|
|---|
| 400 | fHiLoLast = diff;
|
|---|
| 401 | }
|
|---|
| 402 |
|
|---|
| 403 | lastdesired = (Int_t)fHiGainFirst+fWindowSizeHiGain-1;
|
|---|
| 404 | lastavailable = (Int_t)fRunHeader->GetNumSamplesHiGain()-1;
|
|---|
| 405 |
|
|---|
| 406 | if (lastdesired > lastavailable)
|
|---|
| 407 | {
|
|---|
| 408 | const Int_t diff = lastdesired - lastavailable;
|
|---|
| 409 | *fLog << endl;
|
|---|
| 410 | *fLog << warn << GetDescriptor()
|
|---|
| 411 | << Form("%s%2i%s%2i%s",": Selected Hi Gain FADC Window size ",
|
|---|
| 412 | (int)fWindowSizeHiGain,
|
|---|
| 413 | " ranges out of the available limits: [0,",lastavailable,"].") << endl;
|
|---|
| 414 | *fLog << warn << GetDescriptor()
|
|---|
| 415 | << Form("%s%2i%s",": Will use ",diff," samples from the Low-Gain for the High-Gain extraction")
|
|---|
| 416 | << endl;
|
|---|
| 417 |
|
|---|
| 418 | if ((Int_t)fWindowSizeHiGain > diff)
|
|---|
| 419 | {
|
|---|
| 420 | fWindowSizeHiGain -= diff;
|
|---|
| 421 | fWindowSizeLoGain += diff;
|
|---|
| 422 | }
|
|---|
| 423 | else
|
|---|
| 424 | {
|
|---|
| 425 | fWindowSizeLoGain += fWindowSizeHiGain;
|
|---|
| 426 | fLoGainFirst = diff-fWindowSizeHiGain;
|
|---|
| 427 | fWindowSizeHiGain = 0;
|
|---|
| 428 | }
|
|---|
| 429 | }
|
|---|
| 430 |
|
|---|
| 431 |
|
|---|
| 432 | Int_t npixels = fPedestals->GetSize();
|
|---|
| 433 |
|
|---|
| 434 | if (fSumx.GetSize()==0)
|
|---|
| 435 | {
|
|---|
| 436 | fSumx. Set(npixels);
|
|---|
| 437 | fSumx2.Set(npixels);
|
|---|
| 438 | fSumAB0.Set(npixels);
|
|---|
| 439 | fSumAB1.Set(npixels);
|
|---|
| 440 | fNumEventsUsed.Set(npixels);
|
|---|
| 441 | fTotalCounter.Set(npixels);
|
|---|
| 442 |
|
|---|
| 443 | fSumx.Reset();
|
|---|
| 444 | fSumx2.Reset();
|
|---|
| 445 | fSumAB0.Reset();
|
|---|
| 446 | fSumAB1.Reset();
|
|---|
| 447 | fNumEventsUsed.Reset();
|
|---|
| 448 | fTotalCounter.Reset();
|
|---|
| 449 | }
|
|---|
| 450 |
|
|---|
| 451 | if (fWindowSizeHiGain == 0 && fWindowSizeLoGain == 0)
|
|---|
| 452 | {
|
|---|
| 453 | *fLog << err << GetDescriptor()
|
|---|
| 454 | << ": Number of extracted Slices is 0, abort ... " << endl;
|
|---|
| 455 | return kFALSE;
|
|---|
| 456 | }
|
|---|
| 457 |
|
|---|
| 458 |
|
|---|
| 459 | *fLog << endl;
|
|---|
| 460 | *fLog << inf << GetDescriptor() << ": Taking " << (int)fWindowSizeHiGain
|
|---|
| 461 | << " HiGain FADC samples starting with slice: " << (int)fHiGainFirst << endl;
|
|---|
| 462 | *fLog << inf << GetDescriptor() << ": Taking " << (int)fWindowSizeLoGain
|
|---|
| 463 | << " LoGain FADC samples starting with slice: " << (int)fLoGainFirst << endl;
|
|---|
| 464 |
|
|---|
| 465 |
|
|---|
| 466 | if (fBad)
|
|---|
| 467 | {
|
|---|
| 468 | const Int_t nbads = fBad->GetSize();
|
|---|
| 469 | for (Int_t i=0; i<(nbads>npixels?npixels:nbads);i++)
|
|---|
| 470 | if ((*fBad)[i].IsBad())
|
|---|
| 471 | (*fPedestals)[i].SetValid(kFALSE);
|
|---|
| 472 | }
|
|---|
| 473 |
|
|---|
| 474 | return kTRUE;
|
|---|
| 475 |
|
|---|
| 476 | }
|
|---|
| 477 | // --------------------------------------------------------------------------
|
|---|
| 478 | //
|
|---|
| 479 | // Fill the MPedestalCam container with the signal mean and rms for the event.
|
|---|
| 480 | // Store the measured signal in arrays fSumx and fSumx2 so that we can
|
|---|
| 481 | // calculate the overall mean and rms in the PostProcess()
|
|---|
| 482 | //
|
|---|
| 483 | Int_t MPedCalcFromLoGain::Process()
|
|---|
| 484 | {
|
|---|
| 485 |
|
|---|
| 486 | MRawEvtPixelIter pixel(fRawEvt);
|
|---|
| 487 |
|
|---|
| 488 | // cout << "fHiGainFirst: " << (Int_t)fHiGainFirst << " fWindowSizeHiGain: " << (Int_t)fWindowSizeHiGain << " fLoGainFirst: " << (Int_t)fLoGainFirst << " fWindowSizeLoGain: " << (Int_t)fWindowSizeLoGain << endl;
|
|---|
| 489 |
|
|---|
| 490 |
|
|---|
| 491 | while (pixel.Next()) {
|
|---|
| 492 |
|
|---|
| 493 | const UInt_t idx = pixel.GetPixelId();
|
|---|
| 494 |
|
|---|
| 495 | Byte_t *ptr = pixel.GetHiGainSamples() + fHiGainFirst;
|
|---|
| 496 | Byte_t *end = ptr + fWindowSizeHiGain;
|
|---|
| 497 |
|
|---|
| 498 | UInt_t sum = 0;
|
|---|
| 499 | UInt_t sqr = 0;
|
|---|
| 500 |
|
|---|
| 501 | UInt_t max = 0;
|
|---|
| 502 | UInt_t min = 255;
|
|---|
| 503 |
|
|---|
| 504 | // Find the maximum and minimum signal per slice in the high gain window
|
|---|
| 505 | do {
|
|---|
| 506 | if (*ptr > max) {
|
|---|
| 507 | max = *ptr;
|
|---|
| 508 | }
|
|---|
| 509 | if (*ptr < min) {
|
|---|
| 510 | min = *ptr;
|
|---|
| 511 | }
|
|---|
| 512 | } while (++ptr != end);
|
|---|
| 513 |
|
|---|
| 514 | // If the maximum in the high gain window is smaller than
|
|---|
| 515 | if ((max-min < fMaxHiGainVar) && (max < 255)) {
|
|---|
| 516 |
|
|---|
| 517 | Byte_t *firstSlice = pixel.GetLoGainSamples() + fLoGainFirst;
|
|---|
| 518 | Byte_t *lastSlice = firstSlice + fWindowSizeLoGain;
|
|---|
| 519 |
|
|---|
| 520 | Byte_t *slice = firstSlice;
|
|---|
| 521 | do {
|
|---|
| 522 | sum += *slice;
|
|---|
| 523 | sqr += *slice * *slice;
|
|---|
| 524 | } while (++slice != lastSlice);
|
|---|
| 525 |
|
|---|
| 526 | const Float_t msum = (Float_t)sum;
|
|---|
| 527 | const Float_t sqrsum = msum*msum;
|
|---|
| 528 |
|
|---|
| 529 | fSumx[idx] += msum;
|
|---|
| 530 | fSumx2[idx] += sqrsum;
|
|---|
| 531 | fNumEventsUsed[idx]++;
|
|---|
| 532 |
|
|---|
| 533 | // Calculate the amplitude of the 150MHz "AB" noise
|
|---|
| 534 |
|
|---|
| 535 | Int_t abFlag = (fRunHeader->GetNumSamplesHiGain()
|
|---|
| 536 | + fLoGainFirst
|
|---|
| 537 | + pixel.HasABFlag()) & 0x1;
|
|---|
| 538 | for (Int_t islice=0; islice<fWindowSizeLoGain; islice+=2) {
|
|---|
| 539 | Int_t sliceAB0 = islice + abFlag;
|
|---|
| 540 | Int_t sliceAB1 = islice + 1 - abFlag;
|
|---|
| 541 | fSumAB0[idx] += firstSlice[sliceAB0];
|
|---|
| 542 | fSumAB1[idx] += firstSlice[sliceAB1];
|
|---|
| 543 | }
|
|---|
| 544 |
|
|---|
| 545 | if (fPedestalUpdate && (fNumEventsUsed[idx] == fNumEventsDump)) {
|
|---|
| 546 |
|
|---|
| 547 | const ULong_t n = fNumEventsDump;
|
|---|
| 548 |
|
|---|
| 549 | const ULong_t nsamplestot = n*fWindowSizeLoGain;
|
|---|
| 550 |
|
|---|
| 551 | const Float_t sum = fSumx.At(idx);
|
|---|
| 552 | const Float_t sum2 = fSumx2.At(idx);
|
|---|
| 553 | const Float_t ped = sum/(nsamplestot);
|
|---|
| 554 |
|
|---|
| 555 | // 1. Calculate the Variance of the sums:
|
|---|
| 556 | Float_t var = (sum2-sum*sum/n)/(n-1.);
|
|---|
| 557 |
|
|---|
| 558 | // 2. Scale the variance to the number of slices:
|
|---|
| 559 | var /= (Float_t)(fWindowSizeLoGain);
|
|---|
| 560 |
|
|---|
| 561 | // 3. Calculate the RMS from the Variance:
|
|---|
| 562 | Float_t rms = var < 0 ? 0. : TMath::Sqrt(var);
|
|---|
| 563 |
|
|---|
| 564 | // 4. Calculate the amplitude of the 150MHz "AB" noise
|
|---|
| 565 | Float_t abOffs = (fSumAB0[idx] - fSumAB1[idx]) / nsamplestot;
|
|---|
| 566 |
|
|---|
| 567 | (*fPedestals)[idx].Set(ped, rms, abOffs, n);
|
|---|
| 568 |
|
|---|
| 569 | fTotalCounter[idx]++;
|
|---|
| 570 | fNumEventsUsed[idx]=0;
|
|---|
| 571 | fSumx[idx]=0;
|
|---|
| 572 | fSumx2[idx]=0;
|
|---|
| 573 | fSumAB0[idx]=0;
|
|---|
| 574 | fSumAB1[idx]=0;
|
|---|
| 575 | }
|
|---|
| 576 | }
|
|---|
| 577 | }
|
|---|
| 578 |
|
|---|
| 579 | fPedestals->SetReadyToSave();
|
|---|
| 580 |
|
|---|
| 581 | return kTRUE;
|
|---|
| 582 | }
|
|---|
| 583 |
|
|---|
| 584 | // --------------------------------------------------------------------------
|
|---|
| 585 | //
|
|---|
| 586 | // Compute signal mean and rms in the whole run and store it in MPedestalCam
|
|---|
| 587 | //
|
|---|
| 588 | Int_t MPedCalcFromLoGain::PostProcess()
|
|---|
| 589 | {
|
|---|
| 590 |
|
|---|
| 591 | // Compute pedestals and rms from the whole run
|
|---|
| 592 |
|
|---|
| 593 | if (!fPedestalUpdate) {
|
|---|
| 594 |
|
|---|
| 595 | MRawEvtPixelIter pixel(fRawEvt);
|
|---|
| 596 |
|
|---|
| 597 | while (pixel.Next()) {
|
|---|
| 598 |
|
|---|
| 599 | const Int_t idx = pixel.GetPixelId();
|
|---|
| 600 |
|
|---|
| 601 | const ULong_t n = fNumEventsUsed[idx];
|
|---|
| 602 |
|
|---|
| 603 | if (n < 2)
|
|---|
| 604 | continue;
|
|---|
| 605 |
|
|---|
| 606 | const ULong_t nsamplestot = n*fWindowSizeLoGain;
|
|---|
| 607 |
|
|---|
| 608 | const Float_t sum = fSumx.At(idx);
|
|---|
| 609 | const Float_t sum2 = fSumx2.At(idx);
|
|---|
| 610 | const Float_t ped = sum/(nsamplestot);
|
|---|
| 611 |
|
|---|
| 612 | // 1. Calculate the Variance of the sums:
|
|---|
| 613 | Float_t var = (sum2-sum*sum/n)/(n-1.);
|
|---|
| 614 |
|
|---|
| 615 | // 2. Scale the variance to the number of slices:
|
|---|
| 616 | var /= (Float_t)(fWindowSizeLoGain);
|
|---|
| 617 |
|
|---|
| 618 | // 3. Calculate the RMS from the Variance:
|
|---|
| 619 | Float_t rms = var < 0 ? 0. : TMath::Sqrt(var);
|
|---|
| 620 |
|
|---|
| 621 | // 4. Calculate the amplitude of the 150MHz "AB" noise
|
|---|
| 622 | Float_t abOffs = (fSumAB0[idx] - fSumAB1[idx]) / nsamplestot;
|
|---|
| 623 |
|
|---|
| 624 | (*fPedestals)[idx].Set(ped, rms, abOffs, n);
|
|---|
| 625 |
|
|---|
| 626 | fTotalCounter[idx]++;
|
|---|
| 627 | }
|
|---|
| 628 |
|
|---|
| 629 | fPedestals->SetReadyToSave();
|
|---|
| 630 | }
|
|---|
| 631 |
|
|---|
| 632 | return kTRUE;
|
|---|
| 633 | }
|
|---|
