| 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): Oscar Blanch 12/2001 <mailto:blanch@ifae.es>
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| 19 | ! Author(s): Thomas Bretz 08/2002 <mailto:tbretz@astro.uni.wuerzburg.de>
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| 20 | !
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| 21 | ! Copyright: MAGIC Software Development, 2000-2003
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| 22 | !
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| 23 | !
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| 24 | \* ======================================================================== */
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| 25 |
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| 26 | /////////////////////////////////////////////////////////////////////////////
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| 27 | //
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| 28 | // MBlindPixelCalc
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| 29 | //
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| 30 | // This is the specific image cleaning for a list of pixels. This task
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| 31 | // sets the pixels listed in fPixelsIdx to unused so they should not be
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| 32 | // used for analysis (eg calculation of hillas parameters).
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| 33 | //
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| 34 | // You can use MBlindPixelCalc::SetUseInterpolation to replaced the
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| 35 | // blind pixels by the average of its neighbors instead of unmapping
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| 36 | // them. If you want to include the central pixel use
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| 37 | // MBlindPixelCalc::SetUseCentralPixel.
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| 38 | //
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| 39 | // You have three options:
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| 40 | // 1) Call SetUseBlindPixels():
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| 41 | // This will take an existing MBlindPixels container filled from
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| 42 | // elsewhere (eg. MCT1ReadPreProc) and use this pixels as blind
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| 43 | // pixels.
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| 44 | // 2) Call SetPixels():
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| 45 | // This will setup an array with pixel numbers. These pixels are used
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| 46 | // as blind pixels.
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| 47 | // 3) Neither 1) nor 2)
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| 48 | // This options tries to identify the starfield from the
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| 49 | // MMcRunHeader container and tries to identifies it. If it is known
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| 50 | // (eg. Crab) the fixed build in pixel numbers are used as blind
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| 51 | // pixels.
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| 52 | //
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| 53 | // If neither an array of pixels is given (or its size is 0) and
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| 54 | // MMcRunHeader couldn't be found the task removes itself from the
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| 55 | // tasklist.
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| 56 | //
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| 57 | // Implemented star fields:
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| 58 | // - Crab: 400, 401, 402, 437, 438, 439
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| 59 | //
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| 60 | // Input Containers:
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| 61 | // MCerPhotEvt
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| 62 | // [MBlindPixels]
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| 63 | //
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| 64 | // Output Containers:
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| 65 | // MCerPhotEvt
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| 66 | // MBlindPixels
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| 67 | //
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| 68 | /////////////////////////////////////////////////////////////////////////////
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| 69 | #include "MBlindPixelCalc.h"
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| 70 |
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| 71 | #include <fstream>
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| 72 |
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| 73 | #include "MLog.h"
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| 74 | #include "MLogManip.h"
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| 75 |
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| 76 | #include "MParList.h"
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| 77 |
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| 78 | #include "MGeomPix.h"
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| 79 | #include "MGeomCam.h"
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| 80 | #include "MCerPhotPix.h"
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| 81 | #include "MCerPhotEvt.h"
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| 82 | #include "MPedestalPix.h"
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| 83 | #include "MPedestalCam.h"
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| 84 | #include "MBlindPixels.h"
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| 85 |
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| 86 | #include "MMcRunHeader.hxx"
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| 87 |
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| 88 | ClassImp(MBlindPixelCalc);
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| 89 |
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| 90 | using namespace std;
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| 91 |
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| 92 | static const TString gsDefName = "MBlindPixelCalc";
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| 93 | static const TString gsDefTitle = "Find hot spots (star, broken pixels, etc)";
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| 94 |
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| 95 | // --------------------------------------------------------------------------
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| 96 | //
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| 97 | // Default constructor.
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| 98 | //
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| 99 | MBlindPixelCalc::MBlindPixelCalc(const char *name, const char *title)
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| 100 | : fFlags(0)
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| 101 | {
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| 102 | fName = name ? name : gsDefName.Data();
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| 103 | fTitle = title ? title : gsDefTitle.Data();
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| 104 | }
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| 105 |
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| 106 | // --------------------------------------------------------------------------
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| 107 | //
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| 108 | // - Try to find or create MBlindPixels in parameter list.
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| 109 | // - get the MCerPhotEvt from the parlist (abort if missing)
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| 110 | // - if no pixels are given by the user try to determin the starfield
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| 111 | // from the monte carlo run header.
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| 112 | //
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| 113 | Int_t MBlindPixelCalc::PreProcess (MParList *pList)
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| 114 | {
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| 115 | if (TESTBIT(fFlags, kUseBlindPixels))
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| 116 | fPixels = (MBlindPixels*)pList->FindObject(AddSerialNumber("MBlindPixels"));
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| 117 | else
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| 118 | fPixels = (MBlindPixels*)pList->FindCreateObj(AddSerialNumber("MBlindPixels"));
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| 119 | if (!fPixels)
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| 120 | return kFALSE;
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| 121 |
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| 122 | fEvt = (MCerPhotEvt*)pList->FindObject(AddSerialNumber("MCerPhotEvt"));
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| 123 | if (!fEvt)
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| 124 | {
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| 125 | *fLog << err << dbginf << "MCerPhotEvt not found... aborting." << endl;
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| 126 | return kFALSE;
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| 127 | }
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| 128 | fPed = (MPedestalCam*)pList->FindObject(AddSerialNumber("MPedestalCam"));
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| 129 | if (!fEvt)
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| 130 | {
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| 131 | *fLog << err << dbginf << "MPedestalCam not found... aborting." << endl;
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| 132 | return kFALSE;
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| 133 | }
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| 134 |
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| 135 | fGeomCam = (MGeomCam*)pList->FindObject(AddSerialNumber("MGeomCam"));
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| 136 | if (!fGeomCam)
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| 137 | *fLog << warn << dbginf << "No camera geometry available... can't use interpolation." << endl;
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| 138 |
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| 139 | if (TESTBIT(fFlags, kUseBlindPixels))
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| 140 | return kTRUE;
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| 141 |
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| 142 | const UShort_t size = fPixelsIdx.GetSize();
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| 143 |
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| 144 | if (size == 0)
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| 145 | {
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| 146 | if (!pList->FindObject("MMcRunHeader"))
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| 147 | {
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| 148 | *fLog << warn << "Warning - Neither blind pixels are given nor a MMcRunHeader was found... removing MBlindPixelCalc from list." << endl;
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| 149 | return kSKIP;
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| 150 | }
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| 151 | return kTRUE;
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| 152 | }
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| 153 |
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| 154 | // Set as blind pixels the global blind pixels, which are given
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| 155 | // through the macros
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| 156 |
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| 157 | UShort_t numids = fPixelsIdx.GetSize();
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| 158 |
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| 159 | for(Int_t i = 0; i<numids; i++)
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| 160 | fPixels->SetPixelBlind(fPixelsIdx[i]);
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| 161 |
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| 162 | return kTRUE;
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| 163 | }
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| 164 |
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| 165 | // --------------------------------------------------------------------------
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| 166 | //
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| 167 | // Replaces each pixel (signal, signal error, pedestal, pedestal rms)
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| 168 | // by the average of its surrounding pixels.
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| 169 | // If TESTBIT(fFlags, kUseCentralPixel) is set the central pixel is also
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| 170 | // included.
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| 171 | //
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| 172 | // NT: Informations about the interpolated pedestals are added.
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| 173 | // When the option Interpolated is called, the blind pixel with the new
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| 174 | // values of signal and fluttuation is included in the calculation of
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| 175 | // the Image Parameters.
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| 176 | //
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| 177 | void MBlindPixelCalc::Interpolate() const
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| 178 | {
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| 179 | const UShort_t entries = fGeomCam->GetNumPixels();
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| 180 |
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| 181 | //
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| 182 | // Create arrays
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| 183 | //
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| 184 | Double_t *nphot = new Double_t[entries];
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| 185 | Double_t *perr = new Double_t[entries];
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| 186 | Double_t *ped = new Double_t[entries];
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| 187 | Double_t *pedrms = new Double_t[entries];
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| 188 |
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| 189 | //
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| 190 | // Loop over all pixels
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| 191 | //
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| 192 | for (UShort_t i=0; i<entries; i++)
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| 193 | {
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| 194 | //
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| 195 | // Check whether pixel with idx i is blind
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| 196 | //
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| 197 | if (!fPixels->IsBlind(i))
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| 198 | continue;
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| 199 |
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| 200 | //
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| 201 | // Get a pointer to this pixel. If it is not yet existing
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| 202 | // create a new entry for this pixel in MCerPhotEvt
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| 203 | //
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| 204 | const MCerPhotPix *pix = fEvt->GetPixById(i);
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| 205 | if (!pix)
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| 206 | pix = fEvt->AddPixel(i, 0, 0);
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| 207 |
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| 208 | //
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| 209 | // Get the corresponding geometry and pedestal
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| 210 | //
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| 211 | const MGeomPix &gpix = (*fGeomCam)[i];
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| 212 | const MPedestalPix &ppix = (*fPed)[i];
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| 213 |
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| 214 | // Do Not-Use-Central-Pixel
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| 215 | const Bool_t nucp = !TESTBIT(fFlags, kUseCentralPixel);
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| 216 |
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| 217 | Int_t num = nucp ? 0 : 1;
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| 218 |
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| 219 | nphot[i] = nucp ? 0 : pix->GetNumPhotons();
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| 220 | ped[i] = nucp ? 0 : ppix.GetPedestal();
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| 221 | perr[i] = nucp ? 0 : Sqr(pix->GetErrorPhot());
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| 222 | pedrms[i] = nucp ? 0 : Sqr(ppix.GetPedestalRms());
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| 223 |
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| 224 | //
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| 225 | // The values are rescaled to the small pixels area for the right comparison
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| 226 | //
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| 227 | const Double_t ratio = fGeomCam->GetPixRatio(i);
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| 228 |
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| 229 | nphot[i] *= ratio;
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| 230 | ped[i] *= ratio;
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| 231 | perr[i] *= Sqr(ratio);
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| 232 | pedrms[i] *= Sqr(pedrms[i]);
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| 233 |
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| 234 | //
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| 235 | // Loop over all its neighbors
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| 236 | //
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| 237 | const Int_t n = gpix.GetNumNeighbors();
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| 238 | for (int j=0; j<n; j++)
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| 239 | {
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| 240 | const UShort_t nidx = gpix.GetNeighbor(j);
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| 241 |
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| 242 | //
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| 243 | // Do not use blind neighbors
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| 244 | //
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| 245 | if (fPixels->IsBlind(nidx))
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| 246 | continue;
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| 247 |
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| 248 | //
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| 249 | // Check whether the neighbor has a signal stored
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| 250 | //
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| 251 | const MCerPhotPix *evtpix = fEvt->GetPixById(nidx);
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| 252 | if (!evtpix)
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| 253 | continue;
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| 254 |
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| 255 | //
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| 256 | // Get the geometry for the neighbor
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| 257 | //
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| 258 | const Double_t nratio = fGeomCam->GetPixRatio(nidx);
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| 259 | MPedestalPix &nppix = (*fPed)[nidx];
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| 260 |
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| 261 | //
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| 262 | //The error is calculated as the quadratic sum of the errors
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| 263 | //
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| 264 | ped[i] += nratio*nppix.GetPedestal();
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| 265 | nphot[i] += nratio*evtpix->GetNumPhotons();
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| 266 | perr[i] += Sqr(nratio*evtpix->GetErrorPhot());
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| 267 | pedrms[i] += Sqr(nratio*nppix.GetPedestalRms());
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| 268 |
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| 269 | num++;
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| 270 | }
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| 271 |
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| 272 | //
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| 273 | // Now the mean is calculated and the values rescaled back to the pixel area
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| 274 | //
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| 275 | nphot[i] /= num*ratio;
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| 276 | ped[i] /= num*ratio;
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| 277 | perr[i] = TMath::Sqrt(perr[i]/num)*ratio;
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| 278 | pedrms[i] = TMath::Sqrt(pedrms[i]/num)*ratio;
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| 279 |
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| 280 | }
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| 281 |
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| 282 | //
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| 283 | // Now the new pixel values are calculated and can be replaced in
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| 284 | // the corresponding containers
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| 285 | //
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| 286 | for (UShort_t i=0; i<entries; i++)
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| 287 | {
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| 288 | //
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| 289 | // Do not use blind neighbors
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| 290 | //
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| 291 | if (!fPixels->IsBlind(i))
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| 292 | continue;
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| 293 |
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| 294 | //
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| 295 | // It must exist, we have created it in the loop before.
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| 296 | //
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| 297 | fEvt->GetPixById(i)->Set(nphot[i], perr[i]);
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| 298 | (*fPed)[i].Set(ped[i], pedrms[i]);
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| 299 | }
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| 300 |
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| 301 | //
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| 302 | // Delete the intermediat arrays
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| 303 | //
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| 304 | delete nphot;
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| 305 | delete perr;
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| 306 | delete ped;
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| 307 | delete pedrms;
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| 308 | }
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| 309 |
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| 310 | // --------------------------------------------------------------------------
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| 311 | //
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| 312 | // Removes all blind pixels from the analysis by setting their state
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| 313 | // to unused.
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| 314 | //
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| 315 | void MBlindPixelCalc::Unmap() const
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| 316 | {
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| 317 | const UShort_t entries = fEvt->GetNumPixels();
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| 318 |
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| 319 | //
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| 320 | // remove the pixels in fPixelsIdx if they are set to be used,
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| 321 | // (set them to 'unused' state)
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| 322 | //
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| 323 | for (UShort_t i=0; i<entries; i++)
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| 324 | {
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| 325 | MCerPhotPix &pix = (*fEvt)[i];
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| 326 |
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| 327 | if (fPixels->IsBlind(pix.GetPixId()))
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| 328 | pix.SetPixelUnused();
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| 329 | }
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| 330 | }
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| 331 |
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| 332 | // --------------------------------------------------------------------------
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| 333 | //
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| 334 | // Treat the blind pixels
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| 335 | //
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| 336 | Int_t MBlindPixelCalc::Process()
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| 337 | {
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| 338 | if (TESTBIT(fFlags, kUseInterpolation) && fGeomCam)
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| 339 | Interpolate();
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| 340 | else
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| 341 | Unmap();
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| 342 |
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| 343 | return kTRUE;
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| 344 | }
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| 345 |
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| 346 | // --------------------------------------------------------------------------
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| 347 | //
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| 348 | // - Check whether pixels to disable are available. If pixels are
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| 349 | // given by the user nothing more is done.
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| 350 | // - Otherwise try to determin the blind pixels from the starfield
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| 351 | // given in MMcRunHeader.
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| 352 | //
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| 353 | Bool_t MBlindPixelCalc::ReInit(MParList *pList)
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| 354 | {
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| 355 | if (TESTBIT(fFlags, kUseBlindPixels))
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| 356 | return kTRUE;
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| 357 |
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| 358 | //
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| 359 | // If pixels are given by the user, we are already done
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| 360 | //
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| 361 | if (fPixelsIdx.GetSize() > 0)
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| 362 | return kTRUE;
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| 363 |
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| 364 | //
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| 365 | // Delete the old array holding the blind pixels for the last file
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| 366 | //
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| 367 | fPixels->Clear();
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| 368 |
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| 369 | if (!fGeomCam->InheritsFrom("MGeomCamMagic"))
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| 370 | {
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| 371 | *fLog << warn << "MBlindPixelCalc::ReInit: Warning - Starfield only implemented for Magic standard Camera... no action." << endl;
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| 372 | return kTRUE;
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| 373 | }
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| 374 |
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| 375 | //
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| 376 | // Set as blind some particular pixels because of a particular
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| 377 | // Star Field of View.
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| 378 | //
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| 379 | MMcRunHeader *mcrun = (MMcRunHeader*)pList->FindObject("MMcRunHeader");
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| 380 | if (!mcrun)
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| 381 | {
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| 382 | *fLog << warn << "MBlindPixelCalc::ReInit: Warning - No run header available... no action." << endl;
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| 383 | return kTRUE;
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| 384 | }
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| 385 |
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| 386 | Int_t rah, ram, ras;
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| 387 | Int_t ded, dem, des;
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| 388 | mcrun->GetStarFieldRa(&rah, &ram, &ras);
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| 389 | mcrun->GetStarFieldDec(&ded, &dem, &des);
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| 390 |
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| 391 | if (rah!=5 || ram!=34 || ras!=32 || ded!=22 || dem!=0 || des!=55)
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| 392 | {
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| 393 | *fLog << warn << "Warning - Starfield unknown..." << endl;
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| 394 | return kTRUE;
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| 395 | }
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| 396 |
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| 397 | //
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| 398 | // Case for Crab Nebula FOV
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| 399 | //
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| 400 | fPixels->SetPixelBlind(400);
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| 401 | fPixels->SetPixelBlind(401);
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| 402 | fPixels->SetPixelBlind(402);
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| 403 | fPixels->SetPixelBlind(437);
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| 404 | fPixels->SetPixelBlind(438);
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| 405 | fPixels->SetPixelBlind(439);
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| 406 |
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| 407 | *fLog << inf;
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| 408 | *fLog << "FOV is centered at CRAB NEBULA: Setting 6 blind pixels" << endl;
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| 409 | *fLog << "to avoid bias values of analysis due to CRAB NEBULA:" << endl;
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| 410 | *fLog << " Pixels: 400, 401, 402, 437, 438, 439" << endl;
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| 411 |
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| 412 | return kTRUE;
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| 413 | }
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| 414 |
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| 415 | void MBlindPixelCalc::StreamPrimitive(ofstream &out) const
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| 416 | {
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| 417 | out << " MBlindPixelCalc " << GetUniqueName();
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| 418 | if (fName!=gsDefName || fTitle!=gsDefTitle)
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| 419 | {
|
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| 420 | out << "(\"" << fName << "\"";
|
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| 421 | if (fTitle!=gsDefTitle)
|
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| 422 | out << ", \"" << fTitle << "\"";
|
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| 423 | out <<")";
|
|---|
| 424 | }
|
|---|
| 425 | out << ";" << endl;
|
|---|
| 426 |
|
|---|
| 427 | if (TESTBIT(fFlags, kUseInterpolation))
|
|---|
| 428 | out << " " << GetUniqueName() << ".SetUseInterpolation();" << endl;
|
|---|
| 429 | if (TESTBIT(fFlags, kUseCentralPixel))
|
|---|
| 430 | out << " " << GetUniqueName() << ".SetUseCentralPixel();" << endl;
|
|---|
| 431 |
|
|---|
| 432 | if (fPixelsIdx.GetSize()==0)
|
|---|
| 433 | return;
|
|---|
| 434 |
|
|---|
| 435 | out << " {" << endl;
|
|---|
| 436 | out << " TArrayS dummy;" << endl;
|
|---|
| 437 | for (int i=0; i<fPixelsIdx.GetSize(); i++)
|
|---|
| 438 | out << " dummy[" << i << "]=" << ((TArrayS)fPixelsIdx)[i] << ";" << endl;
|
|---|
| 439 | out << " " << GetUniqueName() << ".SetPixels(dummy);" << endl;
|
|---|
| 440 | out << " }" << endl;
|
|---|
| 441 | }
|
|---|
