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Adding a switch to turn on/off the gain calibration
[u/mrichter/AliRoot.git] / PHOS / AliPHOSRawDigiProducer.cxx
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7bc140a5 1/**************************************************************************
2 * Copyright(c) 2007, ALICE Experiment at CERN, All rights reserved. *
3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
15
16/* $Id$ */
17
18//This class produces PHOS digits of one event
19//using AliPHOSRawDecoder.
20//
21// For example:
22// TClonesArray *digits = new TClonesArray("AliPHOSDigit",100);
23// AliRawReader* rawReader = new AliRawReaderDate("2006run2211.raw");
24// AliPHOSRawDecoder dc(rawReader);
25// while (rawReader->NextEvent()) {
26// AliPHOSRawDigiProducer producer;
27// producer.MakeDigits(digits,&dc);
28// }
29
30// Author: Boris Polichtchouk
31
32// --- ROOT system ---
88fb5e50 33#include "TClonesArray.h"
34
7bc140a5 35// --- AliRoot header files ---
88fb5e50 36#include "AliPHOSRawDigiProducer.h"
37#include "AliPHOSRawDecoder.h"
38#include "AliPHOSGeometry.h"
39#include "AliPHOSDigit.h"
c0394bfb 40#include "AliPHOSRecoParam.h"
41#include "AliPHOSCalibData.h"
42#include "AliLog.h"
88fb5e50 43
44ClassImp(AliPHOSRawDigiProducer)
45
c0394bfb 46AliPHOSCalibData * AliPHOSRawDigiProducer::fgCalibData = 0 ;
47
48//--------------------------------------------------------------------------------------
49AliPHOSRawDigiProducer::AliPHOSRawDigiProducer():TObject(),
70d93620 50 fEmcMinE(0.),fCpvMinE(0.),fSampleQualityCut(1.),fEmcCrystals(0),fGeom(0){
c0394bfb 51
52}
53//--------------------------------------------------------------------------------------
54AliPHOSRawDigiProducer::AliPHOSRawDigiProducer(const AliPHOSRecoParam* parEmc, const AliPHOSRecoParam* parCpv):TObject(),
70d93620 55 fEmcMinE(0.),fCpvMinE(0.),fSampleQualityCut(1.),fEmcCrystals(0),fGeom(0){
c0394bfb 56
57 if(!parEmc) AliFatal("Reconstruction parameters for EMC not set!");
58 if(!parCpv) AliFatal("Reconstruction parameters for CPV not set!");
59
60 fEmcMinE = parEmc->GetMinE();
61 fCpvMinE = parCpv->GetMinE();
62
70d93620 63 fSampleQualityCut = parEmc->GetSampleQualityCut() ;
64
c0394bfb 65 fGeom=AliPHOSGeometry::GetInstance() ;
66 if(!fGeom) fGeom = AliPHOSGeometry::GetInstance("IHEP");
67
68 fEmcCrystals=fGeom->GetNCristalsInModule()*fGeom->GetNModules() ;
69
70 GetCalibrationParameters() ;
71}
72//--------------------------------------------------------------------------------------
73AliPHOSRawDigiProducer::AliPHOSRawDigiProducer(const AliPHOSRawDigiProducer &dp):TObject(),
70d93620 74 fEmcMinE(0.),fCpvMinE(0.),fSampleQualityCut(1.),fEmcCrystals(0),fGeom(0){
c0394bfb 75
76 fEmcMinE = dp.fEmcMinE ;
77 fCpvMinE = dp.fCpvMinE ;
78 fEmcCrystals = dp.fEmcCrystals ;
79 fGeom = dp.fGeom ;
80}
81//--------------------------------------------------------------------------------------
82AliPHOSRawDigiProducer& AliPHOSRawDigiProducer::operator= (const AliPHOSRawDigiProducer &dp){
83 if(&dp == this) return *this;
84
85 fEmcMinE = dp.fEmcMinE ;
86 fCpvMinE = dp.fCpvMinE ;
70d93620 87 fSampleQualityCut = dp.fSampleQualityCut ;
c0394bfb 88 fEmcCrystals = dp.fEmcCrystals ;
89 fGeom = dp.fGeom ;
90 return *this;
91}
92
7bc140a5 93//--------------------------------------------------------------------------------------
88fb5e50 94void AliPHOSRawDigiProducer::MakeDigits(TClonesArray *digits, AliPHOSRawDecoder* decoder)
95{
7bc140a5 96 //Makes the job.
97 //TClonesArray *digits and raw data decoder should be provided by calling function.
98
88fb5e50 99 digits->Clear();
100
88fb5e50 101 Int_t iDigit = 0 ;
88fb5e50 102 Int_t relId[4], absId =0;
103
c0394bfb 104 const Double_t baseLine=1. ; //Minimal energy of digit in ADC ch.
105 const Double_t highLowDiff=2. ; //Maximal difference between High and Low channels in LG adc channels
88fb5e50 106
c0394bfb 107 //Temporary array for LowGain digits
108 TClonesArray tmpLG("AliPHOSDigit",10000) ;
109 Int_t ilgDigit=0 ;
110
111 while (decoder->NextDigit()) {
34827459 112
c0394bfb 113 Double_t energy=decoder->GetEnergy() ;
114 if(energy<=baseLine) //in ADC channels
115 continue ;
1267d56d 116
70d93620 117 //remove digits with bas shape. Decoder should calculate quality so that
118 //in default case quality [0,1], while larger values of quality mean somehow
119 //corrupted samples, 999 means obviously corrupted sample.
120 if(decoder->GetSampleQuality() > fSampleQualityCut )
121 continue ;
122
c0394bfb 123 Bool_t lowGainFlag = decoder->IsLowGain();
88fb5e50 124
125 relId[0] = decoder->GetModule();
126 relId[1] = 0;
127 relId[2] = decoder->GetRow();
128 relId[3] = decoder->GetColumn();
c0394bfb 129 fGeom->RelToAbsNumbering(relId, absId);
130
131 Double_t time = decoder->GetTime() ;
132 time = CalibrateT(time,relId,lowGainFlag) ;
133
134 energy = CalibrateE(energy,relId,lowGainFlag) ;
135
136 if(energy <= 0.)
137 continue;
138
139 if(lowGainFlag){
7899109f 140 new(tmpLG[ilgDigit]) AliPHOSDigit(-1,absId,(Float_t)energy,(Float_t)time);
c0394bfb 141 ilgDigit++ ;
142 }
143 else{
144 if(decoder->IsOverflow()) //Keep this digit to replace it by Low Gain later.
145 //If there is no LogGain it wil be removed by cut on Min E
7899109f 146 new((*digits)[iDigit]) AliPHOSDigit(-1,absId,-1.f,(Float_t)time);
c0394bfb 147 else
7899109f 148 new((*digits)[iDigit]) AliPHOSDigit(-1,absId,(Float_t)energy,(Float_t)time);
149 iDigit++;
c0394bfb 150 }
151 }
152
153 //Now scan created LG and HG digits and keep only those which appeared in both lists
154 //replace energy of HighGain digits only if there is overflow
155 //negative energy (overflow)
156 digits->Sort() ;
157 tmpLG.Sort() ;
158 Int_t iLG = 0;
159 Int_t nLG1 = tmpLG.GetEntriesFast()-1 ;
160 for(Int_t iDig=0 ; iDig < digits->GetEntriesFast() ; iDig++) {
161 AliPHOSDigit * digHG = dynamic_cast<AliPHOSDigit*>(digits->At(iDig)) ;
7899109f 162 if (!digHG) continue;
c0394bfb 163 AliPHOSDigit * digLG = dynamic_cast<AliPHOSDigit*>(tmpLG.At(iLG)) ;
164 while(iLG<nLG1 && digHG->GetId()> digLG->GetId()){
165 iLG++ ;
166 digLG = dynamic_cast<AliPHOSDigit*>(tmpLG.At(iLG)) ;
167 }
7899109f 168 if(digLG && digHG->GetId() == digLG->GetId()){ //we found pair
c0394bfb 169 if(digHG->GetEnergy()<0.){ //This is overflow in HG
7899109f 170 digHG->SetTime(digLG->GetTime()) ;
171 digHG->SetEnergy(digLG->GetEnergy()) ;
c0394bfb 172 }
173 else{ //Make approximate comparison of HG and LG energies
174 Double_t de = (digHG->GetEnergy()-digLG->GetEnergy())/16./0.005 ; //aproximate difference in LG ADC ch.
175 if(TMath::Abs(de)>highLowDiff){ //too strong difference, remove digit
176 digits->RemoveAt(iDig) ;
88fb5e50 177 }
178 }
88fb5e50 179 }
c0394bfb 180 else{ //no pair - remove
181 // temporary fix for dead LG channels
182 Int_t absId=digHG->GetId() ;
183 Int_t relId[4] ;
184 fGeom->AbsToRelNumbering(absId,relId) ;
185 if(relId[2]%2==1 && relId[3]%16==4)
186 continue ;
187 digits->RemoveAt(iDig) ;
188 }
189 }
190
191 CleanDigits(digits) ;
192
193}
194//____________________________________________________________________________
195Double_t AliPHOSRawDigiProducer::CalibrateE(Double_t amp, Int_t* relId, Bool_t isLowGain)
196{
197 // Convert EMC measured amplitude into real energy.
198 // Calibration parameters are taken from calibration data base for raw data,
199 // or from digitizer parameters for simulated data.
200 if(fgCalibData){
201 Int_t module = relId[0];
202 Int_t column = relId[3];
203 Int_t row = relId[2];
204 if(relId[1]==0) { // this is EMC
205 if(isLowGain){
206 amp*= fgCalibData->GetHighLowRatioEmc(module,column,row);
88fb5e50 207 }
c0394bfb 208 amp *= fgCalibData->GetADCchannelEmc(module,column,row);
209 return amp ;
210 }
211 }
212 return 0;
213}
214//____________________________________________________________________________
215Double_t AliPHOSRawDigiProducer::CalibrateT(Double_t time, Int_t * relId, Bool_t /* isLowGain */)
216{
217 //Calibrate time
218 if(fgCalibData){
219 Int_t module = relId[0];
220 Int_t column = relId[3];
221 Int_t row = relId[2];
222 if(relId[1]==0) { // this is EMC
223 time += fgCalibData->GetTimeShiftEmc(module,column,row);
224 return time ;
225 }
226 }
227
228 return -999.;
229}
230//____________________________________________________________________________
231void AliPHOSRawDigiProducer::CleanDigits(TClonesArray * digits)
232{
233 // remove digits with amplitudes below threshold.
234 // remove digits in bad channels
235 // sort digits with icreasing AbsId
236
237 //remove digits in bad map and below threshold
238 Bool_t isBadMap = 0 ;
239 if(fgCalibData->GetNumOfEmcBadChannels()){
240 isBadMap=1 ;
241 }
242
243 for(Int_t i=0; i<digits->GetEntriesFast(); i++){
244 AliPHOSDigit * digit = static_cast<AliPHOSDigit*>(digits->At(i)) ;
245 if(!digit)
246 continue ;
247 if ( (IsInEMC(digit) && digit->GetEnergy() < fEmcMinE) ||
248 (IsInCPV(digit) && digit->GetEnergy() < fCpvMinE) ){
249 digits->RemoveAt(i) ;
250 continue ;
251 }
252 if(isBadMap){ //check bad map now
253 Int_t relid[4] ;
254 fGeom->AbsToRelNumbering(digit->GetId(), relid) ;
255 if(fgCalibData->IsBadChannelEmc(relid[0],relid[2],relid[3])){
256 digits->RemoveAt(i) ;
88fb5e50 257 }
258 }
88fb5e50 259 }
260
c0394bfb 261 //Compress, sort and set indexes
262 digits->Compress() ;
263// digits->Sort(); already sorted earlier
264 for (Int_t i = 0 ; i < digits->GetEntriesFast() ; i++) {
265 AliPHOSDigit *digit = static_cast<AliPHOSDigit*>( digits->At(i) ) ;
266 digit->SetIndexInList(i) ;
267 }
268}
269//____________________________________________________________________________
270Bool_t AliPHOSRawDigiProducer::IsInEMC(AliPHOSDigit * digit) const
271{
272 // Tells if (true) or not (false) the digit is in a PHOS-EMC module
273 return digit->GetId() <= fEmcCrystals ;
274
275}
276
277//____________________________________________________________________________
278Bool_t AliPHOSRawDigiProducer::IsInCPV(AliPHOSDigit * digit) const
279{
280 // Tells if (true) or not (false) the digit is in a PHOS-CPV module
281 return digit->GetId() > fEmcCrystals ;
282}
283//____________________________________________________________________________
284void AliPHOSRawDigiProducer::GetCalibrationParameters()
285{
286 // Set calibration parameters:
287 // if calibration database exists, they are read from database,
288 // otherwise, reconstruction stops in the constructor of AliPHOSCalibData
289 //
290 // It is a user responsilibity to open CDB before reconstruction, for example:
291 // AliCDBStorage* storage = AliCDBManager::Instance()->GetStorage("local://CalibDB");
292
293 if (!fgCalibData){
294 fgCalibData = new AliPHOSCalibData(-1); //use AliCDBManager's run number
295 }
296 if (fgCalibData->GetCalibDataEmc() == 0)
297 AliFatal("Calibration parameters for PHOS EMC not found. Stop reconstruction.\n");
298 if (fgCalibData->GetCalibDataCpv() == 0)
299 AliFatal("Calibration parameters for PHOS CPV not found. Stop reconstruction.\n");
88fb5e50 300}