1 /**************************************************************************
2 * Copyright(c) 1998-1999, 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 *
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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 **************************************************************************/
19 //_________________________________________________________________________
20 // Utility Class for handling Raw data
21 // Does all transitions from Digits to Raw and vice versa,
22 // for simu and reconstruction
24 // Note: the current version is still simplified. Only
25 // one raw signal per digit is generated; either high-gain or low-gain
26 // Need to add concurrent high and low-gain info in the future
27 // No pedestal is added to the raw signal.
28 //*-- Author: Marco van Leeuwen (LBL)
30 #include "AliEMCALRawUtils.h"
40 #include "AliRunLoader.h"
41 class AliCaloAltroMapping;
42 #include "AliAltroBuffer.h"
43 #include "AliRawReader.h"
44 #include "AliCaloRawStreamV3.h"
47 #include "AliEMCALRecParam.h"
48 #include "AliEMCALLoader.h"
49 #include "AliEMCALGeometry.h"
50 class AliEMCALDigitizer;
51 #include "AliEMCALDigit.h"
52 #include "AliEMCALRawDigit.h"
54 #include "AliCaloCalibPedestal.h"
55 #include "AliCaloFastAltroFitv0.h"
56 #include "AliCaloNeuralFit.h"
57 #include "AliCaloBunchInfo.h"
58 #include "AliCaloFitResults.h"
59 #include "AliCaloRawAnalyzerFastFit.h"
60 #include "AliCaloRawAnalyzerNN.h"
61 #include "AliCaloRawAnalyzerLMS.h"
62 #include "AliCaloRawAnalyzerPeakFinder.h"
63 #include "AliCaloRawAnalyzerCrude.h"
64 #include "AliEMCALTriggerRawDigitMaker.h"
65 #include "AliEMCALTriggerSTURawStream.h"
66 #include "AliEMCALTriggerData.h"
68 ClassImp(AliEMCALRawUtils)
70 // Signal shape parameters
71 Int_t AliEMCALRawUtils::fgTimeBins = 256; // number of sampling bins of the raw RO signal (we typically use 15-50; theoretical max is 1k+)
72 Double_t AliEMCALRawUtils::fgTimeBinWidth = 100E-9 ; // each sample is 100 ns
73 Double_t AliEMCALRawUtils::fgTimeTrigger = 1.5E-6 ; // 15 time bins ~ 1.5 musec
75 // some digitization constants
76 Int_t AliEMCALRawUtils::fgThreshold = 1;
77 Int_t AliEMCALRawUtils::fgDDLPerSuperModule = 2; // 2 ddls per SuperModule
78 Int_t AliEMCALRawUtils::fgPedestalValue = 0; // pedestal value for digits2raw, default generate ZS data
79 Double_t AliEMCALRawUtils::fgFEENoise = 3.; // 3 ADC channels of noise (sampled)
81 AliEMCALRawUtils::AliEMCALRawUtils(fitAlgorithm fitAlgo)
82 : fHighLowGainFactor(0.), fOrder(0), fTau(0.), fNoiseThreshold(0),
83 fNPedSamples(0), fGeom(0), fOption(""),
84 fRemoveBadChannels(kTRUE),fFittingAlgorithm(0),
85 fTimeMin(-1.),fTimeMax(1.),
86 fUseFALTRO(kFALSE),fRawAnalyzer(0),
87 fTriggerRawDigitMaker(0x0)
90 //These are default parameters.
91 //Can be re-set from without with setter functions
92 //Already set in the OCDB and passed via setter in the AliEMCALReconstructor
93 fHighLowGainFactor = 16. ; // Adjusted for a low gain range of 82 GeV (10 bits)
94 fOrder = 2; // Order of gamma fn
95 fTau = 2.35; // in units of timebin, from CERN 2007 testbeam
96 fNoiseThreshold = 3; // 3 ADC counts is approx. noise level
97 fNPedSamples = 4; // Less than this value => likely pedestal samples
98 fRemoveBadChannels = kFALSE; // Do not remove bad channels before fitting
99 fUseFALTRO = kTRUE; // Get the trigger FALTRO information and pass it to digits.
100 SetFittingAlgorithm(fitAlgo);
102 //Get Mapping RCU files from the AliEMCALRecParam
103 const TObjArray* maps = AliEMCALRecParam::GetMappings();
104 if(!maps) AliFatal("Cannot retrieve ALTRO mappings!!");
106 for(Int_t i = 0; i < 4; i++) {
107 fMapping[i] = (AliAltroMapping*)maps->At(i);
110 //To make sure we match with the geometry in a simulation file,
111 //let's try to get it first. If not, take the default geometry
112 AliRunLoader *rl = AliRunLoader::Instance();
113 if (rl && rl->GetAliRun() && rl->GetAliRun()->GetDetector("EMCAL")) {
114 fGeom = dynamic_cast<AliEMCAL*>(rl->GetAliRun()->GetDetector("EMCAL"))->GetGeometry();
116 AliDebug(1, Form("Using default geometry in raw reco"));
117 fGeom = AliEMCALGeometry::GetInstance(AliEMCALGeometry::GetDefaultGeometryName());
120 if(!fGeom) AliFatal(Form("Could not get geometry!"));
122 fTriggerRawDigitMaker = new AliEMCALTriggerRawDigitMaker();
126 //____________________________________________________________________________
127 AliEMCALRawUtils::AliEMCALRawUtils(AliEMCALGeometry *pGeometry, fitAlgorithm fitAlgo)
128 : fHighLowGainFactor(0.), fOrder(0), fTau(0.), fNoiseThreshold(0),
129 fNPedSamples(0), fGeom(pGeometry), fOption(""),
130 fRemoveBadChannels(kTRUE),fFittingAlgorithm(0),
131 fTimeMin(-1.),fTimeMax(1.),
132 fUseFALTRO(kFALSE),fRawAnalyzer(),
133 fTriggerRawDigitMaker(0x0)
136 // Initialize with the given geometry - constructor required by HLT
137 // HLT does not use/support AliRunLoader(s) instances
138 // This is a minimum intervention solution
139 // Comment by MPloskon@lbl.gov
142 //These are default parameters.
143 //Can be re-set from without with setter functions
144 //Already set in the OCDB and passed via setter in the AliEMCALReconstructor
145 fHighLowGainFactor = 16. ; // adjusted for a low gain range of 82 GeV (10 bits)
146 fOrder = 2; // order of gamma fn
147 fTau = 2.35; // in units of timebin, from CERN 2007 testbeam
148 fNoiseThreshold = 3; // 3 ADC counts is approx. noise level
149 fNPedSamples = 4; // Less than this value => likely pedestal samples
150 fRemoveBadChannels = kFALSE; // Do not remove bad channels before fitting
151 fUseFALTRO = kTRUE; // Get the trigger FALTRO information and pass it to digits.
152 SetFittingAlgorithm(fitAlgo);
154 //Get Mapping RCU files from the AliEMCALRecParam
155 const TObjArray* maps = AliEMCALRecParam::GetMappings();
156 if(!maps) AliFatal("Cannot retrieve ALTRO mappings!!");
158 for(Int_t i = 0; i < 4; i++) {
159 fMapping[i] = (AliAltroMapping*)maps->At(i);
162 if(!fGeom) AliFatal(Form("Could not get geometry!"));
164 fTriggerRawDigitMaker = new AliEMCALTriggerRawDigitMaker();
167 //____________________________________________________________________________
168 AliEMCALRawUtils::AliEMCALRawUtils(const AliEMCALRawUtils& rawU)
170 fHighLowGainFactor(rawU.fHighLowGainFactor),
173 fNoiseThreshold(rawU.fNoiseThreshold),
174 fNPedSamples(rawU.fNPedSamples),
176 fOption(rawU.fOption),
177 fRemoveBadChannels(rawU.fRemoveBadChannels),
178 fFittingAlgorithm(rawU.fFittingAlgorithm),
179 fTimeMin(rawU.fTimeMin),fTimeMax(rawU.fTimeMax),
180 fUseFALTRO(rawU.fUseFALTRO),
181 fRawAnalyzer(rawU.fRawAnalyzer),
182 fTriggerRawDigitMaker(rawU.fTriggerRawDigitMaker)
185 fMapping[0] = rawU.fMapping[0];
186 fMapping[1] = rawU.fMapping[1];
187 fMapping[2] = rawU.fMapping[2];
188 fMapping[3] = rawU.fMapping[3];
191 //____________________________________________________________________________
192 AliEMCALRawUtils& AliEMCALRawUtils::operator =(const AliEMCALRawUtils &rawU)
194 //assignment operator
197 fHighLowGainFactor = rawU.fHighLowGainFactor;
198 fOrder = rawU.fOrder;
200 fNoiseThreshold = rawU.fNoiseThreshold;
201 fNPedSamples = rawU.fNPedSamples;
203 fOption = rawU.fOption;
204 fRemoveBadChannels = rawU.fRemoveBadChannels;
205 fFittingAlgorithm = rawU.fFittingAlgorithm;
206 fTimeMin = rawU.fTimeMin;
207 fTimeMax = rawU.fTimeMax;
208 fUseFALTRO = rawU.fUseFALTRO;
209 fRawAnalyzer = rawU.fRawAnalyzer;
210 fMapping[0] = rawU.fMapping[0];
211 fMapping[1] = rawU.fMapping[1];
212 fMapping[2] = rawU.fMapping[2];
213 fMapping[3] = rawU.fMapping[3];
214 fTriggerRawDigitMaker = rawU.fTriggerRawDigitMaker;
221 //____________________________________________________________________________
222 AliEMCALRawUtils::~AliEMCALRawUtils() {
227 //____________________________________________________________________________
228 void AliEMCALRawUtils::Digits2Raw()
230 // convert digits of the current event to raw data
232 AliRunLoader *rl = AliRunLoader::Instance();
233 AliEMCALLoader *loader = dynamic_cast<AliEMCALLoader*>(rl->GetDetectorLoader("EMCAL"));
236 loader->LoadDigits("EMCAL");
238 TClonesArray* digits = loader->Digits() ;
241 Warning("Digits2Raw", "no digits found !");
245 static const Int_t nDDL = 12*2; // 12 SM hardcoded for now. Buffers allocated dynamically, when needed, so just need an upper limit here
246 AliAltroBuffer* buffers[nDDL];
247 for (Int_t i=0; i < nDDL; i++)
250 TArrayI adcValuesLow(fgTimeBins);
251 TArrayI adcValuesHigh(fgTimeBins);
253 // loop over digits (assume ordered digits)
254 for (Int_t iDigit = 0; iDigit < digits->GetEntries(); iDigit++) {
255 AliEMCALDigit* digit = dynamic_cast<AliEMCALDigit *>(digits->At(iDigit)) ;
257 AliFatal("NULL Digit");
260 if (digit->GetAmplitude() < fgThreshold)
270 fGeom->GetCellIndex(digit->GetId(), nSM, nModule, nIphi, nIeta);
271 fGeom->GetCellPhiEtaIndexInSModule(nSM, nModule, nIphi, nIeta,iphi, ieta) ;
273 //Check which is the RCU, 0 or 1, of the cell.
276 if (0<=iphi&&iphi<8) iRCU=0; // first cable row
277 else if (8<=iphi&&iphi<16 && 0<=ieta&&ieta<24) iRCU=0; // first half;
280 else if(8<=iphi&&iphi<16 && 24<=ieta&&ieta<48) iRCU=1; // second half;
282 else if(16<=iphi&&iphi<24) iRCU=1; // third cable row
284 if (nSM%2==1) iRCU = 1 - iRCU; // swap for odd=C side, to allow us to cable both sides the same
287 Fatal("Digits2Raw()","Non-existent RCU number: %d", iRCU);
290 Int_t iDDL = fgDDLPerSuperModule* nSM + iRCU;
292 Fatal("Digits2Raw()","Non-existent DDL board number: %d", iDDL);
294 if (buffers[iDDL] == 0) {
295 // open new file and write dummy header
296 TString fileName = AliDAQ::DdlFileName("EMCAL",iDDL);
297 //Select mapping file RCU0A, RCU0C, RCU1A, RCU1C
298 Int_t iRCUside=iRCU+(nSM%2)*2;
299 //iRCU=0 and even (0) SM -> RCU0A.data 0
300 //iRCU=1 and even (0) SM -> RCU1A.data 1
301 //iRCU=0 and odd (1) SM -> RCU0C.data 2
302 //iRCU=1 and odd (1) SM -> RCU1C.data 3
303 //cout<<" nSM "<<nSM<<"; iRCU "<<iRCU<<"; iRCUside "<<iRCUside<<endl;
304 buffers[iDDL] = new AliAltroBuffer(fileName.Data(),fMapping[iRCUside]);
305 buffers[iDDL]->WriteDataHeader(kTRUE, kFALSE); //Dummy;
308 // out of time range signal (?)
309 if (digit->GetTimeR() > GetRawFormatTimeMax() ) {
310 AliInfo("Signal is out of time range.\n");
311 buffers[iDDL]->FillBuffer((Int_t)digit->GetAmplitude());
312 buffers[iDDL]->FillBuffer(GetRawFormatTimeBins() ); // time bin
313 buffers[iDDL]->FillBuffer(3); // bunch length
314 buffers[iDDL]->WriteTrailer(3, ieta, iphi, nSM); // trailer
315 // calculate the time response function
317 Bool_t lowgain = RawSampledResponse(digit->GetTimeR(), digit->GetAmplitude(), adcValuesHigh.GetArray(), adcValuesLow.GetArray()) ;
319 buffers[iDDL]->WriteChannel(ieta, iphi, 0, GetRawFormatTimeBins(), adcValuesLow.GetArray(), fgThreshold);
321 buffers[iDDL]->WriteChannel(ieta,iphi, 1, GetRawFormatTimeBins(), adcValuesHigh.GetArray(), fgThreshold);
326 // write headers and close files
327 for (Int_t i=0; i < nDDL; i++) {
330 buffers[i]->WriteDataHeader(kFALSE, kFALSE);
335 loader->UnloadDigits();
338 //____________________________________________________________________________
339 void AliEMCALRawUtils::Raw2Digits(AliRawReader* reader,TClonesArray *digitsArr, const AliCaloCalibPedestal* pedbadmap, TClonesArray *digitsTRG, AliEMCALTriggerData* trgData)
341 // convert raw data of the current event to digits
343 if(digitsArr) digitsArr->Clear("C");
346 Error("Raw2Digits", "no digits found !");
350 Error("Raw2Digits", "no raw reader found !");
354 AliEMCALTriggerSTURawStream inSTU(reader);
356 AliCaloRawStreamV3 in(reader,"EMCAL",fMapping);
358 // Select EMCAL DDL's;
359 reader->Select("EMCAL",0,43); // 43 = AliEMCALGeoParams::fgkLastAltroDDL
361 fTriggerRawDigitMaker->Reset();
362 fTriggerRawDigitMaker->SetIO(reader, in, inSTU, digitsTRG, trgData);
364 // fRawAnalyzer setup
365 fRawAnalyzer->SetNsampleCut(5); // requirement for fits to be done, for the new methods
366 fRawAnalyzer->SetOverflowCut(fgkOverflowCut);
367 fRawAnalyzer->SetAmpCut(fNoiseThreshold);
368 fRawAnalyzer->SetFitArrayCut(fNoiseThreshold);
369 fRawAnalyzer->SetIsZeroSuppressed(true); // TMP - should use stream->IsZeroSuppressed(), or altro cfg registers later
371 // channel info parameters
373 Int_t caloFlag = 0; // low, high gain, or TRU, or LED ref.
375 // start loop over input stream
376 while (in.NextDDL()) {
378 // if ( in.GetDDLNumber() != 0 && in.GetDDLNumber() != 2 ) continue;
380 while (in.NextChannel()) {
382 //Check if the signal is high or low gain and then do the fit,
383 //if it is from TRU or LEDMon do not fit
384 caloFlag = in.GetCaloFlag();
385 // if (caloFlag != 0 && caloFlag != 1) continue;
386 if (caloFlag > 2) continue; // Work with ALTRO and FALTRO
388 //Do not fit bad channels of ALTRO
389 if(caloFlag < 2 && fRemoveBadChannels && pedbadmap->IsBadChannel(in.GetModule(),in.GetColumn(),in.GetRow())) {
390 //printf("Tower from SM %d, column %d, row %d is BAD!!! Skip \n", in.GetModule(),in.GetColumn(),in.GetRow());
394 vector<AliCaloBunchInfo> bunchlist;
395 while (in.NextBunch()) {
396 bunchlist.push_back( AliCaloBunchInfo(in.GetStartTimeBin(), in.GetBunchLength(), in.GetSignals() ) );
397 } // loop over bunches
400 if ( caloFlag < 2 ){ // ALTRO
404 short timeEstimate = 0;
405 Float_t ampEstimate = 0;
406 Bool_t fitDone = kFALSE;
410 if ( fFittingAlgorithm == kFastFit || fFittingAlgorithm == kNeuralNet || fFittingAlgorithm == kLMS || fFittingAlgorithm == kPeakFinder || fFittingAlgorithm == kCrude) {
411 // all functionality to determine amp and time etc is encapsulated inside the Evaluate call for these methods
412 AliCaloFitResults fitResults = fRawAnalyzer->Evaluate( bunchlist, in.GetAltroCFG1(), in.GetAltroCFG2());
414 amp = fitResults.GetAmp();
415 time = fitResults.GetTime();
416 timeEstimate = fitResults.GetMaxTimebin();
417 ampEstimate = fitResults.GetMaxSig();
418 chi2 = fitResults.GetChi2();
419 ndf = fitResults.GetNdf();
420 if (fitResults.GetStatus() == AliCaloFitResults::kFitPar) {
424 else { // for the other methods we for now use the functionality of
425 // AliCaloRawAnalyzer as well, to select samples and prepare for fits,
426 // if it looks like there is something to fit
429 Float_t pedEstimate = 0;
433 Int_t bunchIndex = 0;
435 // The PreFitEvaluateSamples + later call to FitRaw will hopefully
436 // be replaced by a single Evaluate call or so soon, like for the other
437 // methods, but this should be good enough for evaluation of
438 // the methods for now (Jan. 2010)
440 int nsamples = fRawAnalyzer->PreFitEvaluateSamples( bunchlist, in.GetAltroCFG1(), in.GetAltroCFG2(), bunchIndex, ampEstimate, maxADC, timeEstimate, pedEstimate, first, last);
442 if (ampEstimate >= fNoiseThreshold) { // something worth looking at
444 time = timeEstimate; // maxrev in AliCaloRawAnalyzer speak; comes with an offset w.r.t. real timebin
445 Int_t timebinOffset = bunchlist.at(bunchIndex).GetStartBin() - (bunchlist.at(bunchIndex).GetLength()-1);
448 if ( nsamples > 1 && maxADC<fgkOverflowCut ) { // possibly something to fit
449 FitRaw(first, last, amp, time, chi2, fitDone);
450 time += timebinOffset;
451 timeEstimate += timebinOffset;
455 } // ampEstimate check
456 } // method selection
458 if ( fitDone ) { // brief sanity check of fit results
459 Float_t ampAsymm = (amp - ampEstimate)/(amp + ampEstimate);
460 Float_t timeDiff = time - timeEstimate;
461 if ( (TMath::Abs(ampAsymm) > 0.1) || (TMath::Abs(timeDiff) > 2) ) {
462 // AliDebug(2,Form("Fit results amp %f time %f not consistent with expectations amp %f time %d", amp, time, ampEstimate, timeEstimate));
464 // for now just overwrite the fit results with the simple/initial estimate
471 if (amp >= fNoiseThreshold) { // something to be stored
472 if ( ! fitDone) { // smear ADC with +- 0.5 uniform (avoid discrete effects)
473 amp += (0.5 - gRandom->Rndm()); // Rndm generates a number in ]0,1]
476 Int_t id = fGeom->GetAbsCellIdFromCellIndexes(in.GetModule(), in.GetRow(), in.GetColumn()) ;
477 lowGain = in.IsLowGain();
479 // go from time-bin units to physical time fgtimetrigger
480 time = time * GetRawFormatTimeBinWidth(); // skip subtraction of fgTimeTrigger?
481 // subtract RCU L1 phase (L1Phase is in seconds) w.r.t. L0:
482 time -= in.GetL1Phase();
484 AliDebug(2,Form("id %d lowGain %d amp %g", id, lowGain, amp));
485 // printf("Added tower: SM %d, row %d, column %d, amp %3.2f\n",in.GetModule(), in.GetRow(), in.GetColumn(),amp);
486 AddDigit(digitsArr, id, lowGain, amp, time, chi2, ndf);
492 fTriggerRawDigitMaker->Add( bunchlist );
494 } // end while over channel
495 } //end while over DDL's, of input stream
497 fTriggerRawDigitMaker->PostProcess();
499 TrimDigits(digitsArr);
504 //____________________________________________________________________________
505 void AliEMCALRawUtils::AddDigit(TClonesArray *digitsArr, Int_t id, Int_t lowGain, Float_t amp, Float_t time, Float_t chi2, Int_t ndf) {
508 // This routine checks whether a digit exists already for this tower
509 // and then decides whether to use the high or low gain info
511 // Called by Raw2Digits
513 AliEMCALDigit *digit = 0, *tmpdigit = 0;
514 TIter nextdigit(digitsArr);
515 while (digit == 0 && (tmpdigit = (AliEMCALDigit*) nextdigit())) {
516 if (tmpdigit->GetId() == id) digit = tmpdigit;
519 if (!digit) { // no digit existed for this tower; create one
520 Int_t type = AliEMCALDigit::kHG; // use enum in AliEMCALDigit
522 amp *= fHighLowGainFactor;
523 type = AliEMCALDigit::kLGnoHG;
525 Int_t idigit = digitsArr->GetEntries();
526 new((*digitsArr)[idigit]) AliEMCALDigit( -1, -1, id, amp, time, type, idigit, chi2, ndf);
527 AliDebug(2,Form("Add digit Id %d for the first time, type %d", id, type));
528 }//digit added first time
529 else { // a digit already exists, check range
530 // (use high gain if signal < cut value, otherwise low gain)
531 if (lowGain) { // new digit is low gain
532 if (digit->GetAmplitude() > fgkOverflowCut) { // use if previously stored (HG) digit is out of range
533 digit->SetAmplitude(fHighLowGainFactor * amp);
534 digit->SetTime(time);
535 digit->SetType(AliEMCALDigit::kLG);
536 AliDebug(2,Form("Add LG digit ID %d for the second time, type %d", digit->GetId(), digit->GetType()));
538 }//new low gain digit
539 else { // new digit is high gain
540 if (amp < fgkOverflowCut) { // new digit is high gain; use if not out of range
541 digit->SetAmplitude(amp);
542 digit->SetTime(time);
543 digit->SetType(AliEMCALDigit::kHG);
544 AliDebug(2,Form("Add HG digit ID %d for the second time, type %d", digit->GetId(), digit->GetType()));
546 else { // HG out of range, just change flag value to show that HG did exist
547 digit->SetType(AliEMCALDigit::kLG);
548 AliDebug(2,Form("Change LG digit to HG, ID %d, type %d", digit->GetId(), digit->GetType()));
550 }//new high gain digit
551 }//digit existed replace it
555 //____________________________________________________________________________
556 void AliEMCALRawUtils::TrimDigits(TClonesArray *digitsArr)
558 // Remove digits with only low gain and large time
560 AliEMCALDigit *digit = 0;
562 Int_t nDigits = digitsArr->GetEntriesFast();
563 TIter nextdigit(digitsArr);
564 while ((digit = (AliEMCALDigit*) nextdigit())) {
566 //Check if only LG existed, remove if so
567 if (digit->GetType() == AliEMCALDigit::kLGnoHG) {
568 AliDebug(1,Form("Remove digit with id %d, LGnoHG",digit->GetId()));
569 digitsArr->Remove(digit);
571 //Check if time is too large or too small, remove if so
572 else if(fTimeMin > digit->GetTime() || fTimeMax < digit->GetTime()) {
573 digitsArr->Remove(digit);
574 AliDebug(1,Form("Remove digit with id %d, Bad Time %e",digit->GetId(), digit->GetTime()));
576 // Check if Chi2 is undefined
577 else if (0 > digit->GetChi2()) {
578 digitsArr->Remove(digit);
579 AliDebug(1,Form("Remove digit with id %d, Bad Chi2 %e",digit->GetId(), digit->GetChi2()));
581 //Good digit, just reassign the index of the digit in case there was a previous removal
583 digit->SetIndexInList(n);
588 digitsArr->Compress();
589 AliDebug(1,Form("N Digits before trimming : %d; after array compression %d",nDigits,digitsArr->GetEntriesFast()));
593 //____________________________________________________________________________
594 void AliEMCALRawUtils::FitRaw(const Int_t firstTimeBin, const Int_t lastTimeBin, Float_t & amp, Float_t & time, Float_t & chi2, Bool_t & fitDone) const
595 { // Fits the raw signal time distribution
597 //--------------------------------------------------
598 //Do the fit, different fitting algorithms available
599 //--------------------------------------------------
600 int nsamples = lastTimeBin - firstTimeBin + 1;
603 switch(fFittingAlgorithm) {
606 if (nsamples < 3) { return; } // nothing much to fit
607 //printf("Standard fitter \n");
609 // Create Graph to hold data we will fit
610 TGraph *gSig = new TGraph( nsamples);
611 for (int i=0; i<nsamples; i++) {
612 Int_t timebin = firstTimeBin + i;
613 gSig->SetPoint(i, timebin, fRawAnalyzer->GetReversed(timebin));
616 TF1 * signalF = new TF1("signal", RawResponseFunction, 0, GetRawFormatTimeBins(), 5);
617 signalF->SetParameters(10.,5.,fTau,fOrder,0.); //set all defaults once, just to be safe
618 signalF->SetParNames("amp","t0","tau","N","ped");
619 signalF->FixParameter(2,fTau); // tau in units of time bin
620 signalF->FixParameter(3,fOrder); // order
621 signalF->FixParameter(4, 0); // pedestal should be subtracted when we get here
622 signalF->SetParameter(1, time);
623 signalF->SetParameter(0, amp);
624 // set rather loose parameter limits
625 signalF->SetParLimits(0, 0.5*amp, 2*amp );
626 signalF->SetParLimits(1, time - 4, time + 4);
629 gSig->Fit(signalF, "QROW"); // Note option 'W': equal errors on all points
630 // assign fit results
631 amp = signalF->GetParameter(0);
632 time = signalF->GetParameter(1);
633 chi2 = signalF->GetChisquare();
636 catch (const std::exception & e) {
637 AliError( Form("TGraph Fit exception %s", e.what()) );
638 // stay with default amp and time in case of exception, i.e. no special action required
643 //printf("Std : Amp %f, time %g\n",amp, time);
644 delete gSig; // delete TGraph
648 //----------------------------
651 if (nsamples < 3) { return; } // nothing much to fit
652 //printf("LogFit \n");
654 // Create Graph to hold data we will fit
655 TGraph *gSigLog = new TGraph( nsamples);
656 for (int i=0; i<nsamples; i++) {
657 Int_t timebin = firstTimeBin + i;
658 gSigLog->SetPoint(timebin, timebin, TMath::Log(fRawAnalyzer->GetReversed(timebin) ) );
661 TF1 * signalFLog = new TF1("signalLog", RawResponseFunctionLog, 0, GetRawFormatTimeBins(), 5);
662 signalFLog->SetParameters(2.3, 5.,fTau,fOrder,0.); //set all defaults once, just to be safe
663 signalFLog->SetParNames("amplog","t0","tau","N","ped");
664 signalFLog->FixParameter(2,fTau); // tau in units of time bin
665 signalFLog->FixParameter(3,fOrder); // order
666 signalFLog->FixParameter(4, 0); // pedestal should be subtracted when we get here
667 signalFLog->SetParameter(1, time);
669 signalFLog->SetParameter(0, TMath::Log(amp));
672 gSigLog->Fit(signalFLog, "QROW"); // Note option 'W': equal errors on all points
674 // assign fit results
675 Double_t amplog = signalFLog->GetParameter(0); //Not Amp, but Log of Amp
676 amp = TMath::Exp(amplog);
677 time = signalFLog->GetParameter(1);
681 //printf("LogFit: Amp %f, time %g\n",amp, time);
685 //----------------------------
687 //----------------------------
688 }//switch fitting algorithms
693 //__________________________________________________________________
694 void AliEMCALRawUtils::FitParabola(const TGraph *gSig, Float_t & amp) const
696 //BEG YS alternative methods to calculate the amplitude
697 Double_t * ymx = gSig->GetX() ;
698 Double_t * ymy = gSig->GetY() ;
700 Double_t ymMaxX[kN] = {0., 0., 0.} ;
701 Double_t ymMaxY[kN] = {0., 0., 0.} ;
703 // find the maximum amplitude
705 for (Int_t ymi = 0; ymi < gSig->GetN(); ymi++) {
706 if (ymy[ymi] > ymMaxY[0] ) {
707 ymMaxY[0] = ymy[ymi] ; //<========== This is the maximum amplitude
708 ymMaxX[0] = ymx[ymi] ;
712 // find the maximum by fitting a parabola through the max and the two adjacent samples
713 if ( ymiMax < gSig->GetN()-1 && ymiMax > 0) {
714 ymMaxY[1] = ymy[ymiMax+1] ;
715 ymMaxY[2] = ymy[ymiMax-1] ;
716 ymMaxX[1] = ymx[ymiMax+1] ;
717 ymMaxX[2] = ymx[ymiMax-1] ;
718 if (ymMaxY[0]*ymMaxY[1]*ymMaxY[2] > 0) {
719 //fit a parabola through the 3 points y= a+bx+x*x*x
727 for (Int_t i = 0; i < kN ; i++) {
730 sx2 += ymMaxX[i]*ymMaxX[i] ;
731 sx3 += ymMaxX[i]*ymMaxX[i]*ymMaxX[i] ;
732 sx4 += ymMaxX[i]*ymMaxX[i]*ymMaxX[i]*ymMaxX[i] ;
733 sxy += ymMaxX[i]*ymMaxY[i] ;
734 sx2y += ymMaxX[i]*ymMaxX[i]*ymMaxY[i] ;
736 Double_t cN = (sx2y*kN-sy*sx2)*(sx3*sx-sx2*sx2)-(sx2y*sx-sxy*sx2)*(sx3*kN-sx*sx2);
737 Double_t cD = (sx4*kN-sx2*sx2)*(sx3*sx-sx2*sx2)-(sx4*sx-sx3*sx2)*(sx3*kN-sx*sx2) ;
738 Double_t c = cN / cD ;
739 Double_t b = ((sx2y*kN-sy*sx2)-c*(sx4*kN-sx2*sx2))/(sx3*kN-sx*sx2) ;
740 Double_t a = (sy-b*sx-c*sx2)/kN ;
741 Double_t xmax = -b/(2*c) ;
742 ymax = a + b*xmax + c*xmax*xmax ;//<========== This is the maximum amplitude
747 Double_t diff = TMath::Abs(1-ymMaxY[0]/amp) ;
750 //printf("Yves : Amp %f, time %g\n",amp, time);
755 //__________________________________________________________________
756 Double_t AliEMCALRawUtils::RawResponseFunction(Double_t *x, Double_t *par)
758 // Matches version used in 2007 beam test
760 // Shape of the electronics raw reponse:
761 // It is a semi-gaussian, 2nd order Gamma function of the general form
763 // xx = (t - t0 + tau) / tau [xx is just a convenient help variable]
764 // F = A * (xx**N * exp( N * ( 1 - xx) ) for xx >= 0
768 // A: par[0] // Amplitude = peak value
774 Double_t signal = 0.;
775 Double_t tau = par[2];
777 Double_t ped = par[4];
778 Double_t xx = ( x[0] - par[1] + tau ) / tau ;
783 signal = ped + par[0] * TMath::Power(xx , n) * TMath::Exp(n * (1 - xx )) ;
788 //__________________________________________________________________
789 Double_t AliEMCALRawUtils::RawResponseFunctionLog(Double_t *x, Double_t *par)
791 // Matches version used in 2007 beam test
793 // Shape of the electronics raw reponse:
794 // It is a semi-gaussian, 2nd order Gamma function of the general form
796 // xx = (t - t0 + tau) / tau [xx is just a convenient help variable]
797 // F = A * (xx**N * exp( N * ( 1 - xx) ) for xx >= 0
801 // Log[A]: par[0] // Amplitude = peak value
807 Double_t signal = 0. ;
808 Double_t tau = par[2];
810 //Double_t ped = par[4]; // not used
811 Double_t xx = ( x[0] - par[1] + tau ) / tau ;
814 signal = par[0] - n*TMath::Log(TMath::Abs(xx)) + n * (1 - xx ) ;
816 signal = par[0] + n*TMath::Log(xx) + n * (1 - xx ) ;
821 //__________________________________________________________________
822 Bool_t AliEMCALRawUtils::RawSampledResponse(const Double_t dtime, const Double_t damp, Int_t * adcH, Int_t * adcL, const Int_t keyErr) const
824 // for a start time dtime and an amplitude damp given by digit,
825 // calculates the raw sampled response AliEMCAL::RawResponseFunction
827 Bool_t lowGain = kFALSE ;
829 // A: par[0] // Amplitude = peak value
835 TF1 signalF("signal", RawResponseFunction, 0, GetRawFormatTimeBins(), 5);
836 signalF.SetParameter(0, damp) ;
837 signalF.SetParameter(1, (dtime + fgTimeTrigger)/fgTimeBinWidth) ;
838 signalF.SetParameter(2, fTau) ;
839 signalF.SetParameter(3, fOrder);
840 signalF.SetParameter(4, fgPedestalValue);
842 Double_t signal=0.0, noise=0.0;
843 for (Int_t iTime = 0; iTime < GetRawFormatTimeBins(); iTime++) {
844 signal = signalF.Eval(iTime) ;
846 // Next lines commeted for the moment but in principle it is not necessary to add
847 // extra noise since noise already added at the digits level.
849 //According to Terry Awes, 13-Apr-2008
850 //add gaussian noise in quadrature to each sample
851 //Double_t noise = gRandom->Gaus(0.,fgFEENoise);
852 //signal = sqrt(signal*signal + noise*noise);
854 // March 17,09 for fast fit simulations by Alexei Pavlinov.
855 // Get from PHOS analysis. In some sense it is open questions.
857 noise = gRandom->Gaus(0.,fgFEENoise);
861 adcH[iTime] = static_cast<Int_t>(signal + 0.5) ;
862 if ( adcH[iTime] > fgkRawSignalOverflow ){ // larger than 10 bits
863 adcH[iTime] = fgkRawSignalOverflow ;
867 signal /= fHighLowGainFactor;
869 adcL[iTime] = static_cast<Int_t>(signal + 0.5) ;
870 if ( adcL[iTime] > fgkRawSignalOverflow) // larger than 10 bits
871 adcL[iTime] = fgkRawSignalOverflow ;
876 //__________________________________________________________________
877 void AliEMCALRawUtils::CalculateChi2(const Double_t* t, const Double_t* y, const Int_t nPoints,
878 const Double_t sig, const Double_t tau, const Double_t amp, const Double_t t0, Double_t &chi2)
881 // t[] - array of time bins
882 // y[] - array of amplitudes after pedestal subtractions;
883 // nPoints - number of points
884 // sig - error of amplitude measurement (one value for all channels)
885 // if sig<0 that mean sig=1.
886 // tau - filter time response (in timebin units)
887 // amp - amplitude at t0;
888 // t0 - time of max amplitude;
891 // ndf = nPoints - 2 when tau fixed
892 // ndf = nPoints - 3 when tau free
893 static Double_t par[5]={0.0, 0.0, 0.0, 2.0, 0.0};
898 // par[3]=n=2.; par[4]=ped=0.0
900 Double_t dy = 0.0, x = 0.0, f=0.0;
901 for(Int_t i=0; i<nPoints; i++){
903 f = RawResponseFunction(&x, par);
906 printf(" AliEMCALRawUtils::CalculateChi2 : %i : y %f -> f %f : dy %f \n", i, y[i], f, dy);
908 if(sig>0.0) chi2 /= (sig*sig);
911 //__________________________________________________________________
912 void AliEMCALRawUtils::SetFittingAlgorithm(Int_t fitAlgo)
914 //Set fitting algorithm and initialize it if this same algorithm was not set before.
915 //printf("**** Set Algorithm , number %d ****\n",fitAlgo);
917 if(fitAlgo == fFittingAlgorithm && fRawAnalyzer) {
918 //Do nothing, this same algorithm already set before.
919 //printf("**** Algorithm already set before, number %d, %s ****\n",fitAlgo, fRawAnalyzer->GetName());
922 //Initialize the requested algorithm
923 if(fitAlgo != fFittingAlgorithm || !fRawAnalyzer) {
924 //printf("**** Init Algorithm , number %d ****\n",fitAlgo);
926 fFittingAlgorithm = fitAlgo;
927 if (fRawAnalyzer) delete fRawAnalyzer; // delete prev. analyzer if existed.
929 if (fitAlgo == kFastFit) {
930 fRawAnalyzer = new AliCaloRawAnalyzerFastFit();
932 else if (fitAlgo == kNeuralNet) {
933 fRawAnalyzer = new AliCaloRawAnalyzerNN();
935 else if (fitAlgo == kLMS) {
936 fRawAnalyzer = new AliCaloRawAnalyzerLMS();
938 else if (fitAlgo == kPeakFinder) {
939 fRawAnalyzer = new AliCaloRawAnalyzerPeakFinder();
941 else if (fitAlgo == kCrude) {
942 fRawAnalyzer = new AliCaloRawAnalyzerCrude();
945 fRawAnalyzer = new AliCaloRawAnalyzer();