1 /**************************************************************************
2 * Copyright(c) 2007, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
18 //This class produces PHOS digits of one event
19 //using AliPHOSRawDecoder.
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);
30 // Author: Boris Polichtchouk
32 // --- ROOT system ---
33 #include "TClonesArray.h"
35 // --- AliRoot header files ---
36 #include "AliPHOSRawDigiProducer.h"
37 #include "AliPHOSRawDecoder.h"
38 #include "AliPHOSGeometry.h"
39 #include "AliPHOSDigit.h"
40 #include "AliPHOSCalibData.h"
41 #include "AliPHOSPulseGenerator.h"
44 ClassImp(AliPHOSRawDigiProducer)
46 AliPHOSCalibData * AliPHOSRawDigiProducer::fgCalibData = 0 ;
48 //--------------------------------------------------------------------------------------
49 AliPHOSRawDigiProducer::AliPHOSRawDigiProducer():
53 fSampleQualityCut(1.),
58 // Default constructor
60 fGeom=AliPHOSGeometry::GetInstance() ;
61 if(!fGeom) fGeom = AliPHOSGeometry::GetInstance("IHEP");
63 fEmcCrystals=fGeom->GetNCristalsInModule()*fGeom->GetNModules() ;
64 fPulseGenerator = new AliPHOSPulseGenerator();
65 GetCalibrationParameters() ;
68 //--------------------------------------------------------------------------------------
69 AliPHOSRawDigiProducer::AliPHOSRawDigiProducer(const AliPHOSRawDigiProducer &dp):
73 fSampleQualityCut(1.),
80 fEmcMinE = dp.fEmcMinE ;
81 fCpvMinE = dp.fCpvMinE ;
82 fSampleQualityCut = dp.fSampleQualityCut;
83 fEmcCrystals = dp.fEmcCrystals ;
84 fPulseGenerator = new AliPHOSPulseGenerator();
87 //--------------------------------------------------------------------------------------
88 AliPHOSRawDigiProducer& AliPHOSRawDigiProducer::operator= (const AliPHOSRawDigiProducer &dp)
92 if(&dp == this) return *this;
94 fEmcMinE = dp.fEmcMinE ;
95 fCpvMinE = dp.fCpvMinE ;
96 fSampleQualityCut = dp.fSampleQualityCut ;
97 fEmcCrystals = dp.fEmcCrystals ;
99 if(fPulseGenerator) delete fPulseGenerator ;
100 fPulseGenerator = new AliPHOSPulseGenerator();
103 //--------------------------------------------------------------------------------------
104 AliPHOSRawDigiProducer::~AliPHOSRawDigiProducer()
107 if(fPulseGenerator) delete fPulseGenerator ;
110 //--------------------------------------------------------------------------------------
111 void AliPHOSRawDigiProducer::MakeDigits(TClonesArray *digits, AliPHOSRawDecoder* decoder)
114 //TClonesArray *digits and raw data decoder should be provided by calling function.
119 Int_t relId[4], absId =0;
121 const Double_t baseLine=1. ; //Minimal energy of digit in ADC ch.
122 const Double_t highLowDiff=2.; //Maximal difference between High and Low channels in LG adc channels
124 //Temporary array for LowGain digits
125 TClonesArray tmpLG("AliPHOSDigit",10000) ;
128 //Let decoder subtract pedestals in case of ZS
129 decoder->SetCalibData(fgCalibData) ;
131 while (decoder->NextDigit()) {
133 Double_t energy=decoder->GetEnergy() ;
134 if(energy<=baseLine) //in ADC channels
137 //remove digits with bad shape. Decoder should calculate quality so that
138 //in default case quality [0,1], while larger values of quality mean somehow
139 //corrupted samples, 999 means obviously corrupted sample.
140 //It is difficult to fit samples with overflow (even setting cut on overflow values)
141 //because too few points are left to fit. So we do not evaluate samples with overflow
142 if(decoder->GetSampleQuality() > fSampleQualityCut && !(decoder->IsOverflow()))
145 Bool_t lowGainFlag = decoder->IsLowGain();
147 relId[0] = decoder->GetModule();
149 relId[2] = decoder->GetRow();
150 relId[3] = decoder->GetColumn();
151 fGeom->RelToAbsNumbering(relId, absId);
153 Double_t time = decoder->GetTime() ;
154 time = CalibrateT(time,relId,lowGainFlag) ;
156 energy = CalibrateE(energy,relId,lowGainFlag) ;
162 new(tmpLG[ilgDigit]) AliPHOSDigit(-1,absId,(Float_t)energy,(Float_t)time);
166 if(decoder->IsOverflow()) //Keep this digit to replace it by Low Gain later.
167 //If there is no LogGain it wil be removed by cut on Min E
168 new((*digits)[iDigit]) AliPHOSDigit(-1,absId,-1.f,(Float_t)time);
170 new((*digits)[iDigit]) AliPHOSDigit(-1,absId,(Float_t)energy,(Float_t)time);
175 //Now scan created LG and HG digits and keep only those which appeared in both lists
176 //replace energy of HighGain digits only if there is overflow
177 //negative energy (overflow)
181 Int_t nLG1 = tmpLG.GetEntriesFast()-1 ;
183 for(Int_t iDig=0 ; iDig < digits->GetEntriesFast() ; iDig++) {
184 AliPHOSDigit * digHG = dynamic_cast<AliPHOSDigit*>(digits->At(iDig)) ;
185 if (!digHG) continue;
186 AliPHOSDigit * digLG = dynamic_cast<AliPHOSDigit*>(tmpLG.At(iLG)) ;
187 while(digLG && iLG<nLG1 && digHG->GetId()> digLG->GetId()){
189 digLG = dynamic_cast<AliPHOSDigit*>(tmpLG.At(iLG)) ;
191 absId=digHG->GetId() ;
192 fGeom->AbsToRelNumbering(absId,relId) ;
194 if(digLG && digHG->GetId() == digLG->GetId()){ //we found pair
195 if(digHG->GetEnergy()<0.){ //This is overflow in HG
196 digHG->SetTime(digLG->GetTime()) ;
197 digHG->SetEnergy(digLG->GetEnergy()) ;
199 else{ //Make approximate comparison of HG and LG energies
200 Double_t de = (digHG->GetEnergy()-digLG->GetEnergy()) ;
201 if(TMath::Abs(de)>CalibrateE(double(highLowDiff),relId,1)){ //too strong difference, remove digit
202 digits->RemoveAt(iDig) ;
206 else{ //no pair - remove
207 // temporary fix for dead LG channels
208 if(relId[2]%2==1 && relId[3]%16==4)
210 if(digHG->GetEnergy()>CalibrateE(double(5.),relId,1)) //One can not always find LG with Amp<5 ADC ch.
211 digits->RemoveAt(iDig) ;
215 CleanDigits(digits) ;
218 //____________________________________________________________________________
219 Double_t AliPHOSRawDigiProducer::CalibrateE(Double_t amp, Int_t* relId, Bool_t isLowGain)
221 // Convert EMC LG amplitude to HG (multipli by ~16)
222 // Calibration parameters are taken from calibration data base
224 Int_t module = relId[0];
225 Int_t column = relId[3];
226 Int_t row = relId[2];
227 if(relId[1]==0) { // this is EMC
229 amp*= fgCalibData->GetHighLowRatioEmc(module,column,row);
236 //____________________________________________________________________________
237 Double_t AliPHOSRawDigiProducer::CalibrateT(Double_t time, Int_t * relId, Bool_t /* isLowGain */)
240 time*=fPulseGenerator->GetRawFormatTimeTrigger() ;
242 Int_t module = relId[0];
243 Int_t column = relId[3];
244 Int_t row = relId[2];
245 if(relId[1]==0) { // this is EMC
246 time += fgCalibData->GetTimeShiftEmc(module,column,row);
253 //____________________________________________________________________________
254 void AliPHOSRawDigiProducer::CleanDigits(TClonesArray * digits)
256 // remove digits with amplitudes below threshold.
257 // remove digits in bad channels
258 // sort digits with icreasing AbsId
260 //remove digits in bad map and below threshold
261 Bool_t isBadMap = 0 ;
262 if(fgCalibData->GetNumOfEmcBadChannels()){
266 for(Int_t i=0; i<digits->GetEntriesFast(); i++){
267 AliPHOSDigit * digit = static_cast<AliPHOSDigit*>(digits->At(i)) ;
270 if ( (IsInEMC(digit) && digit->GetEnergy() < fEmcMinE) ||
271 (IsInCPV(digit) && digit->GetEnergy() < fCpvMinE) ){
272 digits->RemoveAt(i) ;
275 if(isBadMap){ //check bad map now
277 fGeom->AbsToRelNumbering(digit->GetId(), relid) ;
278 if(fgCalibData->IsBadChannelEmc(relid[0],relid[3],relid[2])){
279 digits->RemoveAt(i) ;
284 //Compress, sort and set indexes
286 // digits->Sort(); already sorted earlier
287 for (Int_t i = 0 ; i < digits->GetEntriesFast() ; i++) {
288 AliPHOSDigit *digit = static_cast<AliPHOSDigit*>( digits->At(i) ) ;
289 digit->SetIndexInList(i) ;
292 //____________________________________________________________________________
293 Bool_t AliPHOSRawDigiProducer::IsInEMC(AliPHOSDigit * digit) const
295 // Tells if (true) or not (false) the digit is in a PHOS-EMC module
296 return digit->GetId() <= fEmcCrystals ;
300 //____________________________________________________________________________
301 Bool_t AliPHOSRawDigiProducer::IsInCPV(AliPHOSDigit * digit) const
303 // Tells if (true) or not (false) the digit is in a PHOS-CPV module
304 return digit->GetId() > fEmcCrystals ;
306 //____________________________________________________________________________
307 void AliPHOSRawDigiProducer::GetCalibrationParameters()
309 // Set calibration parameters:
310 // if calibration database exists, they are read from database,
311 // otherwise, reconstruction stops in the constructor of AliPHOSCalibData
313 // It is a user responsilibity to open CDB before reconstruction, for example:
314 // AliCDBStorage* storage = AliCDBManager::Instance()->GetStorage("local://CalibDB");
317 fgCalibData = new AliPHOSCalibData(-1); //use AliCDBManager's run number
319 if (fgCalibData->GetCalibDataEmc() == 0)
320 AliFatal("Calibration parameters for PHOS EMC not found. Stop reconstruction.\n");
321 if (fgCalibData->GetCalibDataCpv() == 0)
322 AliFatal("Calibration parameters for PHOS CPV not found. Stop reconstruction.\n");