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, 2000-2004
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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 | // MBadPixelsTreat
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29 | //
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30 | // You can use MBadPixelsTreat::SetUseInterpolation to replaced the
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31 | // bad pixels by the average of its neighbors instead of unmapping
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32 | // them. If you want to include the central pixel use
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33 | // MBadPixelsTreat::SetUseCentralPixel. The bad pixels are taken from
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34 | // an existing MBadPixelsCam.
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35 | //
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36 | // It check if there are enough neighbors to calculate the mean
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37 | // If not, unmap the pixel. The minimum number of good neighbors
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38 | // should be set using SetNumMinNeighbors
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39 | //
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40 | // If you don't want to interpolate unreliable pixels but only unsuitable
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41 | // (broken) pixels use SetSloppyTreatment().
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42 | //
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43 | //
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44 | // Input Containers:
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45 | // MCerPhotEvt
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46 | // MPedPhotCam
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47 | // MBadPixelsCam
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48 | // [MGeomCam]
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49 | //
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50 | // Output Containers:
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51 | // MCerPhotEvt
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52 | //
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53 | /////////////////////////////////////////////////////////////////////////////
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54 | #include "MBadPixelsTreat.h"
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55 |
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56 | #include <fstream>
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57 |
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58 | #include <TArrayD.h>
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59 |
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60 | #include "MLog.h"
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61 | #include "MLogManip.h"
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62 |
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63 | #include "MParList.h"
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64 |
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65 | #include "MGeomPix.h"
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66 | #include "MGeomCam.h"
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67 |
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68 | #include "MCerPhotPix.h"
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69 | #include "MCerPhotEvt.h"
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70 |
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71 | #include "MPedPhotPix.h"
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72 | #include "MPedPhotCam.h"
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73 |
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74 | #include "MBadPixelsPix.h"
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75 | #include "MBadPixelsCam.h"
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76 |
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77 | ClassImp(MBadPixelsTreat);
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78 |
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79 | using namespace std;
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80 |
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81 | static const TString gsDefName = "MBadPixelsTreat";
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82 | static const TString gsDefTitle = "Task to treat bad pixels (interpolation, unmapping)";
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83 |
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84 | // --------------------------------------------------------------------------
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85 | //
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86 | // Default constructor.
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87 | //
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88 | MBadPixelsTreat::MBadPixelsTreat(const char *name, const char *title)
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89 | : fFlags(0), fNumMinNeighbors(3)
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90 | {
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91 | fName = name ? name : gsDefName.Data();
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92 | fTitle = title ? title : gsDefTitle.Data();
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93 | }
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94 |
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95 | // --------------------------------------------------------------------------
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96 | //
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97 | // Returns the status of a pixel. If kSloppyTreatment is set a pixel must
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98 | // be unsuitable to be treated. If not it is enough if it is unreliable
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99 | // (IsBad() checks for any flag)
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100 | //
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101 | Bool_t MBadPixelsTreat::IsPixelBad(Int_t idx) const
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102 | {
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103 | return TESTBIT(fFlags, kSloppyTreatment) ? (*fBadPixels)[idx].IsUnsuitable() : (*fBadPixels)[idx].IsBad();
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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 MBadPixelsTreat::PreProcess (MParList *pList)
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114 | {
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115 | fBadPixels = (MBadPixelsCam*)pList->FindObject(AddSerialNumber("MBadPixelsCam"));
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116 | if (!fBadPixels)
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117 | {
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118 | *fLog << err << "MBadPixelsCam not found... aborting." << endl;
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119 | return kFALSE;
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120 | }
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121 |
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122 | fPedPhot = (MPedPhotCam*)pList->FindObject(AddSerialNumber("MPedPhotCam"));
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123 | if (!fPedPhot)
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124 | {
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125 | *fLog << err << "MPedPhotCam not found... aborting." << endl;
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126 | return kFALSE;
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127 | }
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128 |
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129 | fEvt = (MCerPhotEvt*)pList->FindObject(AddSerialNumber("MCerPhotEvt"));
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130 | if (!fEvt)
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131 | {
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132 | *fLog << err << "MCerPhotEvt not found... aborting." << endl;
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133 | return kFALSE;
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134 | }
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135 |
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136 | fGeomCam = (MGeomCam*)pList->FindObject(AddSerialNumber("MGeomCam"));
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137 | if (!fGeomCam && TESTBIT(fFlags, kUseInterpolation))
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138 | {
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139 | *fLog << err << "MGeomCam not found... can't use interpolation." << endl;
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140 | return kFALSE;
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141 | }
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142 |
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143 | return kTRUE;
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144 | }
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145 |
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146 | // --------------------------------------------------------------------------
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147 | //
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148 | // Replaces each pixel (signal, signal error, pedestal, pedestal rms)
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149 | // by the average of its surrounding pixels.
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150 | // If TESTBIT(fFlags, kUseCentralPixel) is set the central pixel is also
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151 | // included.
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152 | //
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153 | void MBadPixelsTreat::InterpolateSignal() const
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154 | {
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155 | const UShort_t entries = fGeomCam->GetNumPixels();
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156 |
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157 | //
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158 | // Create arrays (FIXME: Check if its possible to create it only once)
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159 | //
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160 | TArrayD nphot(entries);
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161 | TArrayD perr(entries);
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162 |
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163 | //
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164 | // Loop over all pixels
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165 | //
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166 | for (UShort_t i=0; i<entries; i++)
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167 | {
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168 | MCerPhotPix *pix = fEvt->GetPixById(i);
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169 |
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170 | //
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171 | // Check whether pixel with idx i is blind
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172 | //
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173 | if (pix && !IsPixelBad(i))
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174 | continue;
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175 |
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176 | //
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177 | // Get a pointer to this pixel. If it is not yet existing
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178 | // create a new entry for this pixel in MCerPhotEvt
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179 | //
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180 | if (!pix)
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181 | {
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182 | pix = fEvt->AddPixel(i, 0, 0);
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183 | (*fBadPixels)[i].SetUnsuitable(MBadPixelsPix::kUnsuitableEvt);
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184 | }
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185 |
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186 | //
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187 | // Get the corresponding geometry and pedestal
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188 | //
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189 | const MGeomPix &gpix = (*fGeomCam)[i];
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190 |
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191 | // Do Not-Use-Central-Pixel
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192 | const Bool_t nucp = !TESTBIT(fFlags, kUseCentralPixel);
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193 |
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194 | Int_t num = nucp ? 0 : 1;
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195 |
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196 | nphot[i] = nucp ? 0 : pix->GetNumPhotons();
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197 | perr[i] = nucp ? 0 : Pow2(pix->GetErrorPhot());
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198 |
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199 | //
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200 | // The values are rescaled to the small pixels area for the right comparison
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201 | //
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202 | const Double_t ratio = fGeomCam->GetPixRatio(i);
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203 |
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204 | nphot[i] *= ratio;
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205 | perr[i] *= ratio;
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206 |
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207 | //
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208 | // Loop over all its neighbors
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209 | //
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210 | const Int_t n = gpix.GetNumNeighbors();
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211 | for (int j=0; j<n; j++)
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212 | {
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213 | const UShort_t nidx = gpix.GetNeighbor(j);
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214 |
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215 | //
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216 | // Do not use blind neighbors
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217 | //
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218 | if (IsPixelBad(nidx))
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219 | continue;
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220 |
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221 | //
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222 | // Check whether the neighbor has a signal stored
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223 | //
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224 | const MCerPhotPix *evtpix = fEvt->GetPixById(nidx);
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225 | if (!evtpix)
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226 | continue;
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227 |
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228 | //
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229 | // Get the geometry for the neighbor
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230 | //
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231 | const Double_t nratio = fGeomCam->GetPixRatio(nidx);
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232 |
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233 | //
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234 | //The error is calculated as the quadratic sum of the errors
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235 | //
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236 | nphot[i] += nratio*evtpix->GetNumPhotons();
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237 | perr[i] += nratio* Pow2(evtpix->GetErrorPhot());
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238 |
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239 | num++;
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240 | }
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241 |
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242 | // Check if there are enough neighbors to calculate the mean
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243 | // If not, unmap the pixel. The maximum number of blind neighbors
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244 | // should be 2
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245 | if (num<fNumMinNeighbors)
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246 | {
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247 | pix->SetPixelUnmapped();
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248 | continue;
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249 | }
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250 |
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251 | //
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252 | // Now the mean is calculated and the values rescaled back
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253 | // to the pixel area
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254 | //
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255 | nphot[i] /= (num*ratio);
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256 | perr[i] = TMath::Sqrt(perr[i]/(num*ratio));
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257 |
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258 | pix->Set(nphot[i], perr[i]);
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259 | }
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260 | }
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261 |
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262 | // --------------------------------------------------------------------------
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263 | //
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264 | void MBadPixelsTreat::InterpolatePedestals() const
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265 | {
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266 | const Int_t entries = fPedPhot->GetSize();
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267 |
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268 | // Create arrays (FIXME: Check if its possible to create it only once)
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269 | TArrayD ped(entries);
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270 | TArrayD rms(entries);
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271 |
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272 | //
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273 | // Loop over all pixels
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274 | //
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275 | for (UShort_t i=0; i<entries; i++)
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276 | {
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277 | //
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278 | // Check whether pixel with idx i is blind
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279 | //
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280 | if (!IsPixelBad(i))
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281 | continue;
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282 |
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283 | //
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284 | // Get the corresponding geometry and pedestal
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285 | //
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286 | const MGeomPix &gpix = (*fGeomCam)[i];
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287 | const MPedPhotPix &ppix = (*fPedPhot)[i];
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288 |
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289 | // Do Not-Use-Central-Pixel
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290 | const Bool_t nucp = !TESTBIT(fFlags, kUseCentralPixel);
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291 |
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292 | Int_t num = nucp ? 0 : 1;
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293 |
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294 | ped[i] = nucp ? 0 : ppix.GetMean();
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295 | rms[i] = nucp ? 0 : Pow2(ppix.GetRms());
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296 |
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297 | //
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298 | // The values are rescaled to the small pixels area for the right comparison
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299 | //
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300 | const Double_t ratio = fGeomCam->GetPixRatio(i);
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301 |
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302 | ped[i] *= ratio;
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303 | rms[i] *= ratio;
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304 |
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305 | //
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306 | // Loop over all its neighbors
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307 | //
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308 | const Int_t n = gpix.GetNumNeighbors();
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309 | for (int j=0; j<n; j++)
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310 | {
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311 | const UShort_t nidx = gpix.GetNeighbor(j);
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312 |
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313 | //
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314 | // Do not use blind neighbors
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315 | //
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316 | if (IsPixelBad(nidx))
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317 | continue;
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318 |
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319 | //
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320 | // Get the geometry for the neighbor
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321 | //
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322 | const Double_t nratio = fGeomCam->GetPixRatio(nidx);
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323 | const MPedPhotPix &nppix = (*fPedPhot)[nidx];
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324 |
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325 | //
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326 | //The error is calculated as the quadratic sum of the errors
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327 | //
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328 | ped[i] += nratio*nppix.GetMean();
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329 | rms[i] += nratio*Pow2(nppix.GetRms());
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330 |
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331 | num++;
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332 | }
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333 |
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334 | // Check if there are enough neighbors to calculate the mean
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335 | // If not, unmap the pixel. The minimum number of good neighbors
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336 | // should be fNumMinNeighbors
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337 | if (num < fNumMinNeighbors)
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338 | {
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339 | MCerPhotPix *pix =fEvt->GetPixById(i);
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340 | if (!pix)
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341 | pix = fEvt->AddPixel(i, 0, 0);
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342 | pix->SetPixelUnmapped();
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343 | continue;
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344 | }
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345 |
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346 | //
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347 | // Now the mean is calculated and the values rescaled back
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348 | // to the pixel area
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349 | //
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350 | ped[i] /= (num*ratio);
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351 | rms[i] = TMath::Sqrt(rms[i]/(num*ratio));
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352 |
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353 | (*fPedPhot)[i].Set(ped[i], rms[i]);
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354 | }
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355 | }
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356 |
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357 | // --------------------------------------------------------------------------
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358 | //
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359 | // Replaces each pixel (signal, signal error, pedestal, pedestal rms)
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360 | // by the average of its surrounding pixels.
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361 | // If TESTBIT(fFlags, kUseCentralPixel) is set the central pixel is also
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362 | // included.
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363 | //
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364 | // NT: Informations about the interpolated pedestals are added.
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365 | // When the option Interpolated is called, the blind pixel with the new
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366 | // values of signal and fluttuation is included in the calculation of
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367 | // the Image Parameters.
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368 | //
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369 | /*
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370 | void MBadPixelsTreat::Interpolate() const
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371 | {
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372 | const UShort_t entries = fGeomCam->GetNumPixels();
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373 |
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374 | //
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375 | // Create arrays
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376 | //
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377 | TArrayD nphot(entries);
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378 | TArrayD perr(entries);
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379 | TArrayD ped(entries);
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380 | TArrayD pedrms(entries);
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381 |
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382 | //
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383 | // Loop over all pixels
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384 | //
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385 | for (UShort_t i=0; i<entries; i++)
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386 | {
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387 | MCerPhotPix *pix = fEvt->GetPixById(i);
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388 |
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389 | //
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390 | // Check whether pixel with idx i is blind
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391 | //
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392 | if (pix && (*fBadPixels)[i].IsOK())
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393 | continue;
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394 |
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395 | //
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396 | // Get a pointer to this pixel. If it is not yet existing
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397 | // create a new entry for this pixel in MCerPhotEvt
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398 | //
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399 | if (!pix)
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400 | {
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401 | pix = fEvt->AddPixel(i, 0, 0);
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402 | (*fBadPixels)[i].SetUnsuitable(MBadPixelsPix::kUnsuitableEvt);
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403 | }
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404 |
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405 | //
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406 | // Get the corresponding geometry and pedestal
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407 | //
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408 | const MGeomPix &gpix = (*fGeomCam)[i];
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409 | const MPedPhotPix &ppix = (*fPedPhot)[i];
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410 |
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411 | // Do Not-Use-Central-Pixel
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412 | const Bool_t nucp = !TESTBIT(fFlags, kUseCentralPixel);
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413 |
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414 | Int_t num = nucp ? 0 : 1;
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415 |
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416 | nphot[i] = nucp ? 0 : pix->GetNumPhotons();
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417 | ped[i] = nucp ? 0 : ppix.GetMean();
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418 | perr[i] = nucp ? 0 : Pow2(pix->GetErrorPhot());
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419 | pedrms[i] = nucp ? 0 : Pow2(ppix.GetRms());
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420 |
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421 | //
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422 | // The values are rescaled to the small pixels area for the right comparison
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423 | //
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424 | const Double_t ratio = fGeomCam->GetPixRatio(i);
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425 |
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426 | if (nucp)
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427 | {
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428 | nphot[i] *= ratio;
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429 | perr[i] *= ratio;
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430 | ped[i] *= ratio;
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431 | pedrms[i] *= ratio;
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432 | }
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433 |
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434 | //
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435 | // Loop over all its neighbors
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436 | //
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437 | const Int_t n = gpix.GetNumNeighbors();
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438 | for (int j=0; j<n; j++)
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439 | {
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440 | const UShort_t nidx = gpix.GetNeighbor(j);
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441 |
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442 | //
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443 | // Do not use blind neighbors
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444 | //
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445 | if ((*fBadPixels)[nidx].IsBad())
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446 | continue;
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447 |
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448 | //
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449 | // Check whether the neighbor has a signal stored
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450 | //
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451 | const MCerPhotPix *evtpix = fEvt->GetPixById(nidx);
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452 | if (!evtpix)
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453 | continue;
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454 |
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455 | //
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456 | // Get the geometry for the neighbor
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457 | //
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458 | const Double_t nratio = fGeomCam->GetPixRatio(nidx);
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459 | MPedPhotPix &nppix = (*fPedPhot)[nidx];
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460 |
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461 | //
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462 | // The error is calculated as the quadratic sum of the errors
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463 | //
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464 | nphot[i] += nratio*evtpix->GetNumPhotons();
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465 | ped[i] += nratio*nppix.GetMean();
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466 | perr[i] += nratio*Pow2(evtpix->GetErrorPhot());
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467 | pedrms[i] += nratio*Pow2(nppix.GetRms());
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468 |
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469 | num++;
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470 | }
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471 |
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472 | if (num<fNumMinNeighbors)
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473 | {
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474 | pix->SetPixelUnmapped();
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475 | nphot[i] = 0;
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476 | ped[i] = 0;
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477 | perr[i] = 0;
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478 | pedrms[i] = 0;
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479 | continue;
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480 | }
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481 |
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482 | //
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483 | // Now the mean is calculated and the values rescaled back to the pixel area
|
---|
484 | //
|
---|
485 | nphot[i] /= num*ratio;
|
---|
486 | ped[i] /= num*ratio;
|
---|
487 | perr[i] = TMath::Sqrt(perr[i]/(num*ratio));
|
---|
488 | pedrms[i] = TMath::Sqrt(pedrms[i]/(num*ratio));
|
---|
489 |
|
---|
490 | }
|
---|
491 |
|
---|
492 | //
|
---|
493 | // Now the new pixel values are calculated and can be replaced in
|
---|
494 | // the corresponding containers
|
---|
495 | //
|
---|
496 | for (UShort_t i=0; i<entries; i++)
|
---|
497 | {
|
---|
498 | //
|
---|
499 | // Do not use blind neighbors
|
---|
500 | //
|
---|
501 | if ((*fBadPixels)[i].IsOK())
|
---|
502 | continue;
|
---|
503 |
|
---|
504 | //
|
---|
505 | // It must exist, we have created it in the loop before.
|
---|
506 | //
|
---|
507 | fEvt->GetPixById(i)->Set(nphot[i], perr[i]);
|
---|
508 | (*fPedPhot)[i].Set(ped[i], pedrms[i]);
|
---|
509 | }
|
---|
510 | }
|
---|
511 | */
|
---|
512 |
|
---|
513 | // --------------------------------------------------------------------------
|
---|
514 | //
|
---|
515 | // Removes all blind pixels from the analysis by setting their state
|
---|
516 | // to unused.
|
---|
517 | //
|
---|
518 | void MBadPixelsTreat::Unmap() const
|
---|
519 | {
|
---|
520 | const UShort_t entries = fEvt->GetNumPixels();
|
---|
521 |
|
---|
522 | //
|
---|
523 | // remove the pixels in fPixelsIdx if they are set to be used,
|
---|
524 | // (set them to 'unused' state)
|
---|
525 | //
|
---|
526 | for (UShort_t i=0; i<entries; i++)
|
---|
527 | {
|
---|
528 | MCerPhotPix &pix = (*fEvt)[i];
|
---|
529 |
|
---|
530 | if (IsPixelBad(pix.GetPixId()))
|
---|
531 | pix.SetPixelUnmapped();
|
---|
532 | }
|
---|
533 | }
|
---|
534 |
|
---|
535 | // --------------------------------------------------------------------------
|
---|
536 | //
|
---|
537 | // Interpolate Pedestals if kProcessRMS not set
|
---|
538 | //
|
---|
539 | Bool_t MBadPixelsTreat::ReInit(MParList *pList)
|
---|
540 | {
|
---|
541 | if (!TESTBIT(fFlags, kProcessRMS))
|
---|
542 | InterpolatePedestals();
|
---|
543 | return kTRUE;
|
---|
544 | }
|
---|
545 |
|
---|
546 | // --------------------------------------------------------------------------
|
---|
547 | //
|
---|
548 | // Treat the blind pixels
|
---|
549 | //
|
---|
550 | Int_t MBadPixelsTreat::Process()
|
---|
551 | {
|
---|
552 | if (TESTBIT(fFlags, kUseInterpolation) && fGeomCam)
|
---|
553 | {
|
---|
554 | InterpolateSignal();
|
---|
555 | if (TESTBIT(fFlags, kProcessRMS))
|
---|
556 | InterpolatePedestals();
|
---|
557 | }
|
---|
558 | else
|
---|
559 | Unmap();
|
---|
560 |
|
---|
561 | return kTRUE;
|
---|
562 | }
|
---|
563 |
|
---|
564 | void MBadPixelsTreat::StreamPrimitive(ofstream &out) const
|
---|
565 | {
|
---|
566 | out << " MBadPixelsTreat " << GetUniqueName();
|
---|
567 | if (fName!=gsDefName || fTitle!=gsDefTitle)
|
---|
568 | {
|
---|
569 | out << "(\"" << fName << "\"";
|
---|
570 | if (fTitle!=gsDefTitle)
|
---|
571 | out << ", \"" << fTitle << "\"";
|
---|
572 | out <<")";
|
---|
573 | }
|
---|
574 | out << ";" << endl;
|
---|
575 |
|
---|
576 | if (TESTBIT(fFlags, kUseInterpolation))
|
---|
577 | out << " " << GetUniqueName() << ".SetUseInterpolation();" << endl;
|
---|
578 | if (TESTBIT(fFlags, kUseCentralPixel))
|
---|
579 | out << " " << GetUniqueName() << ".SetUseCentralPixel();" << endl;
|
---|
580 | }
|
---|