2 /**************************************************************************
3 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
5 * Author: The ALICE Off-line Project. *
6 * Contributors are mentioned in the code where appropriate. *
8 * Permission to use, copy, modify and distribute this software and its *
9 * documentation strictly for non-commercial purposes is hereby granted *
10 * without fee, provided that the above copyright notice appears in all *
11 * copies and that both the copyright notice and this permission notice *
12 * appear in the supporting documentation. The authors make no claims *
13 * about the suitability of this software for any purpose. It is *
14 * provided "as is" without express or implied warranty. *
15 **************************************************************************/
20 //_________________________________________________________________________
21 // Utility Class for handling Raw data
22 // Does all transitions from Digits to Raw and vice versa,
23 // for simu and reconstruction
25 // Note: the current version is still simplified. Only
26 // one raw signal per digit is generated; either high-gain or low-gain
27 // Need to add concurrent high and low-gain info in the future
28 // No pedestal is added to the raw signal.
29 //*-- Author: Marco van Leeuwen (LBL)
31 #include "AliEMCALRawUtils.h"
41 #include "AliRunLoader.h"
42 class AliCaloAltroMapping;
43 #include "AliAltroBuffer.h"
44 #include "AliRawReader.h"
45 #include "AliCaloRawStreamV3.h"
48 #include "AliEMCALRecParam.h"
49 #include "AliEMCALLoader.h"
50 #include "AliEMCALGeometry.h"
51 class AliEMCALDigitizer;
52 #include "AliEMCALDigit.h"
53 #include "AliEMCALRawDigit.h"
55 #include "AliCaloCalibPedestal.h"
56 #include "AliCaloFastAltroFitv0.h"
57 #include "AliCaloNeuralFit.h"
58 #include "AliCaloBunchInfo.h"
59 #include "AliCaloFitResults.h"
60 #include "AliCaloRawAnalyzerFastFit.h"
61 #include "AliCaloRawAnalyzerNN.h"
62 #include "AliCaloRawAnalyzerLMS.h"
63 #include "AliCaloRawAnalyzerPeakFinder.h"
64 #include "AliCaloRawAnalyzerCrude.h"
65 #include "AliEMCALTriggerRawDigitMaker.h"
66 #include "AliEMCALTriggerSTURawStream.h"
67 #include "AliEMCALTriggerData.h"
69 ClassImp(AliEMCALRawUtils)
71 // Signal shape parameters
72 Int_t AliEMCALRawUtils::fgTimeBins = 256; // number of sampling bins of the raw RO signal (we typically use 15-50; theoretical max is 1k+)
73 Double_t AliEMCALRawUtils::fgTimeBinWidth = 100E-9 ; // each sample is 100 ns
74 Double_t AliEMCALRawUtils::fgTimeTrigger = 600E-9 ; // the time of the trigger as approximately seen in the data
76 // some digitization constants
77 Int_t AliEMCALRawUtils::fgThreshold = 1;
78 Int_t AliEMCALRawUtils::fgDDLPerSuperModule = 2; // 2 ddls per SuperModule
79 Int_t AliEMCALRawUtils::fgPedestalValue = 0; // pedestal value for digits2raw, default generate ZS data
80 Double_t AliEMCALRawUtils::fgFEENoise = 3.; // 3 ADC channels of noise (sampled)
82 AliEMCALRawUtils::AliEMCALRawUtils( Algo::fitAlgorithm fitAlgo)
83 : fHighLowGainFactor(0.), fOrder(0), fTau(0.), fNoiseThreshold(0),
84 fNPedSamples(0), fGeom(0), fOption(""),
85 fRemoveBadChannels(kTRUE),fFittingAlgorithm(0),
86 fTimeMin(-1.),fTimeMax(1.),
87 fUseFALTRO(kFALSE),fRawAnalyzer(0),
88 fTriggerRawDigitMaker(0x0)
91 //These are default parameters.
92 //Can be re-set from without with setter functions
93 //Already set in the OCDB and passed via setter in the AliEMCALReconstructor
94 fHighLowGainFactor = 16. ; // Adjusted for a low gain range of 82 GeV (10 bits)
95 fOrder = 2; // Order of gamma fn
96 fTau = 2.35; // in units of timebin, from CERN 2007 testbeam
97 fNoiseThreshold = 3; // 3 ADC counts is approx. noise level
98 fNPedSamples = 4; // Less than this value => likely pedestal samples
99 fRemoveBadChannels = kFALSE; // Do not remove bad channels before fitting
100 fUseFALTRO = kTRUE; // Get the trigger FALTRO information and pass it to digits.
101 SetFittingAlgorithm(fitAlgo);
103 //Get Mapping RCU files from the AliEMCALRecParam
104 const TObjArray* maps = AliEMCALRecParam::GetMappings();
105 if(!maps) AliFatal("Cannot retrieve ALTRO mappings!!");
107 for(Int_t i = 0; i < 4; i++) {
108 fMapping[i] = (AliAltroMapping*)maps->At(i);
111 //To make sure we match with the geometry in a simulation file,
112 //let's try to get it first. If not, take the default geometry
113 AliRunLoader *rl = AliRunLoader::Instance();
114 if (rl && rl->GetAliRun()) {
115 AliEMCAL * emcal = dynamic_cast<AliEMCAL*>(rl->GetAliRun()->GetDetector("EMCAL"));
116 if(emcal)fGeom = emcal->GetGeometry();
118 AliDebug(1, Form("Using default geometry in raw reco"));
119 fGeom = AliEMCALGeometry::GetInstance(AliEMCALGeometry::GetDefaultGeometryName());
123 AliDebug(1, Form("Using default geometry in raw reco"));
124 fGeom = AliEMCALGeometry::GetInstance(AliEMCALGeometry::GetDefaultGeometryName());
127 if(!fGeom) AliFatal(Form("Could not get geometry!"));
129 fTriggerRawDigitMaker = new AliEMCALTriggerRawDigitMaker();
133 //____________________________________________________________________________
134 AliEMCALRawUtils::AliEMCALRawUtils(AliEMCALGeometry *pGeometry, Algo::fitAlgorithm fitAlgo)
135 : fHighLowGainFactor(0.), fOrder(0), fTau(0.), fNoiseThreshold(0),
136 fNPedSamples(0), fGeom(pGeometry), fOption(""),
137 fRemoveBadChannels(kTRUE),fFittingAlgorithm(0),
138 fTimeMin(-1.),fTimeMax(1.),
139 fUseFALTRO(kFALSE),fRawAnalyzer(),
140 fTriggerRawDigitMaker(0x0)
143 // Initialize with the given geometry - constructor required by HLT
144 // HLT does not use/support AliRunLoader(s) instances
145 // This is a minimum intervention solution
146 // Comment by MPloskon@lbl.gov
149 //These are default parameters.
150 //Can be re-set from without with setter functions
151 //Already set in the OCDB and passed via setter in the AliEMCALReconstructor
152 fHighLowGainFactor = 16. ; // adjusted for a low gain range of 82 GeV (10 bits)
153 fOrder = 2; // order of gamma fn
154 fTau = 2.35; // in units of timebin, from CERN 2007 testbeam
155 fNoiseThreshold = 3; // 3 ADC counts is approx. noise level
156 fNPedSamples = 4; // Less than this value => likely pedestal samples
157 fRemoveBadChannels = kFALSE; // Do not remove bad channels before fitting
158 fUseFALTRO = kTRUE; // Get the trigger FALTRO information and pass it to digits.
159 SetFittingAlgorithm(fitAlgo);
161 //Get Mapping RCU files from the AliEMCALRecParam
162 const TObjArray* maps = AliEMCALRecParam::GetMappings();
163 if(!maps) AliFatal("Cannot retrieve ALTRO mappings!!");
165 for(Int_t i = 0; i < 4; i++) {
166 fMapping[i] = (AliAltroMapping*)maps->At(i);
169 if(!fGeom) AliFatal(Form("Could not get geometry!"));
171 fTriggerRawDigitMaker = new AliEMCALTriggerRawDigitMaker();
174 //____________________________________________________________________________
175 AliEMCALRawUtils::AliEMCALRawUtils(const AliEMCALRawUtils& rawU)
177 fHighLowGainFactor(rawU.fHighLowGainFactor),
180 fNoiseThreshold(rawU.fNoiseThreshold),
181 fNPedSamples(rawU.fNPedSamples),
183 fOption(rawU.fOption),
184 fRemoveBadChannels(rawU.fRemoveBadChannels),
185 fFittingAlgorithm(rawU.fFittingAlgorithm),
186 fTimeMin(rawU.fTimeMin),fTimeMax(rawU.fTimeMax),
187 fUseFALTRO(rawU.fUseFALTRO),
188 fRawAnalyzer(rawU.fRawAnalyzer),
189 fTriggerRawDigitMaker(rawU.fTriggerRawDigitMaker)
192 fMapping[0] = rawU.fMapping[0];
193 fMapping[1] = rawU.fMapping[1];
194 fMapping[2] = rawU.fMapping[2];
195 fMapping[3] = rawU.fMapping[3];
198 //____________________________________________________________________________
199 AliEMCALRawUtils& AliEMCALRawUtils::operator =(const AliEMCALRawUtils &rawU)
201 //assignment operator
204 fHighLowGainFactor = rawU.fHighLowGainFactor;
205 fOrder = rawU.fOrder;
207 fNoiseThreshold = rawU.fNoiseThreshold;
208 fNPedSamples = rawU.fNPedSamples;
210 fOption = rawU.fOption;
211 fRemoveBadChannels = rawU.fRemoveBadChannels;
212 fFittingAlgorithm = rawU.fFittingAlgorithm;
213 fTimeMin = rawU.fTimeMin;
214 fTimeMax = rawU.fTimeMax;
215 fUseFALTRO = rawU.fUseFALTRO;
216 fRawAnalyzer = rawU.fRawAnalyzer;
217 fMapping[0] = rawU.fMapping[0];
218 fMapping[1] = rawU.fMapping[1];
219 fMapping[2] = rawU.fMapping[2];
220 fMapping[3] = rawU.fMapping[3];
221 fTriggerRawDigitMaker = rawU.fTriggerRawDigitMaker;
228 //____________________________________________________________________________
229 AliEMCALRawUtils::~AliEMCALRawUtils() {
234 //____________________________________________________________________________
235 void AliEMCALRawUtils::Digits2Raw()
237 // convert digits of the current event to raw data
239 AliRunLoader *rl = AliRunLoader::Instance();
240 AliEMCALLoader *loader = dynamic_cast<AliEMCALLoader*>(rl->GetDetectorLoader("EMCAL"));
243 loader->LoadDigits("EMCAL");
245 TClonesArray* digits = loader->Digits() ;
248 Warning("Digits2Raw", "no digits found !");
252 static const Int_t nDDL = 12*2; // 12 SM hardcoded for now. Buffers allocated dynamically, when needed, so just need an upper limit here
253 AliAltroBuffer* buffers[nDDL];
254 for (Int_t i=0; i < nDDL; i++)
257 TArrayI adcValuesLow(fgTimeBins);
258 TArrayI adcValuesHigh(fgTimeBins);
260 // loop over digits (assume ordered digits)
261 for (Int_t iDigit = 0; iDigit < digits->GetEntries(); iDigit++) {
262 AliEMCALDigit* digit = dynamic_cast<AliEMCALDigit *>(digits->At(iDigit)) ;
264 AliFatal("NULL Digit");
267 if (digit->GetAmplitude() < fgThreshold)
277 fGeom->GetCellIndex(digit->GetId(), nSM, nModule, nIphi, nIeta);
278 fGeom->GetCellPhiEtaIndexInSModule(nSM, nModule, nIphi, nIeta,iphi, ieta) ;
280 //Check which is the RCU, 0 or 1, of the cell.
283 if (0<=iphi&&iphi<8) iRCU=0; // first cable row
284 else if (8<=iphi&&iphi<16 && 0<=ieta&&ieta<24) iRCU=0; // first half;
287 else if(8<=iphi&&iphi<16 && 24<=ieta&&ieta<48) iRCU=1; // second half;
289 else if(16<=iphi&&iphi<24) iRCU=1; // third cable row
291 if (nSM%2==1) iRCU = 1 - iRCU; // swap for odd=C side, to allow us to cable both sides the same
294 Fatal("Digits2Raw()","Non-existent RCU number: %d", iRCU);
297 Int_t iDDL = fgDDLPerSuperModule* nSM + iRCU;
298 if (iDDL < 0 || iDDL >= nDDL){
299 Fatal("Digits2Raw()","Non-existent DDL board number: %d", iDDL);
302 if (buffers[iDDL] == 0) {
303 // open new file and write dummy header
304 TString fileName = AliDAQ::DdlFileName("EMCAL",iDDL);
305 //Select mapping file RCU0A, RCU0C, RCU1A, RCU1C
306 Int_t iRCUside=iRCU+(nSM%2)*2;
307 //iRCU=0 and even (0) SM -> RCU0A.data 0
308 //iRCU=1 and even (0) SM -> RCU1A.data 1
309 //iRCU=0 and odd (1) SM -> RCU0C.data 2
310 //iRCU=1 and odd (1) SM -> RCU1C.data 3
311 //cout<<" nSM "<<nSM<<"; iRCU "<<iRCU<<"; iRCUside "<<iRCUside<<endl;
312 buffers[iDDL] = new AliAltroBuffer(fileName.Data(),fMapping[iRCUside]);
313 buffers[iDDL]->WriteDataHeader(kTRUE, kFALSE); //Dummy;
316 // out of time range signal (?)
317 if (digit->GetTimeR() > GetRawFormatTimeMax() ) {
318 AliInfo("Signal is out of time range.\n");
319 buffers[iDDL]->FillBuffer((Int_t)digit->GetAmplitude());
320 buffers[iDDL]->FillBuffer(GetRawFormatTimeBins() ); // time bin
321 buffers[iDDL]->FillBuffer(3); // bunch length
322 buffers[iDDL]->WriteTrailer(3, ieta, iphi, nSM); // trailer
323 // calculate the time response function
325 Bool_t lowgain = RawSampledResponse(digit->GetTimeR(), digit->GetAmplitude(), adcValuesHigh.GetArray(), adcValuesLow.GetArray()) ;
327 buffers[iDDL]->WriteChannel(ieta, iphi, 0, GetRawFormatTimeBins(), adcValuesLow.GetArray(), fgThreshold);
329 buffers[iDDL]->WriteChannel(ieta,iphi, 1, GetRawFormatTimeBins(), adcValuesHigh.GetArray(), fgThreshold);
331 }// iDDL under the limits
335 // write headers and close files
336 for (Int_t i=0; i < nDDL; i++) {
339 buffers[i]->WriteDataHeader(kFALSE, kFALSE);
344 loader->UnloadDigits();
347 //____________________________________________________________________________
348 void AliEMCALRawUtils::Raw2Digits(AliRawReader* reader,TClonesArray *digitsArr, const AliCaloCalibPedestal* pedbadmap, TClonesArray *digitsTRG, AliEMCALTriggerData* trgData)
350 // convert raw data of the current event to digits
352 if(digitsArr) digitsArr->Clear("C");
355 Error("Raw2Digits", "no digits found !");
359 Error("Raw2Digits", "no raw reader found !");
363 AliEMCALTriggerSTURawStream inSTU(reader);
365 AliCaloRawStreamV3 in(reader,"EMCAL",fMapping);
367 // Select EMCAL DDL's;
368 reader->Select("EMCAL",0,43); // 43 = AliEMCALGeoParams::fgkLastAltroDDL
370 fTriggerRawDigitMaker->Reset();
371 fTriggerRawDigitMaker->SetIO(reader, in, inSTU, digitsTRG, trgData);
373 // fRawAnalyzer setup
374 fRawAnalyzer->SetNsampleCut(5); // requirement for fits to be done, for the new methods
375 fRawAnalyzer->SetOverflowCut(fgkOverflowCut);
376 fRawAnalyzer->SetAmpCut(fNoiseThreshold);
377 fRawAnalyzer->SetFitArrayCut(fNoiseThreshold);
378 fRawAnalyzer->SetIsZeroSuppressed(true); // TMP - should use stream->IsZeroSuppressed(), or altro cfg registers later
380 // channel info parameters
382 Int_t caloFlag = 0; // low, high gain, or TRU, or LED ref.
384 // start loop over input stream
385 while (in.NextDDL()) {
387 // if ( in.GetDDLNumber() != 0 && in.GetDDLNumber() != 2 ) continue;
389 while (in.NextChannel()) {
391 //Check if the signal is high or low gain and then do the fit,
392 //if it is from TRU or LEDMon do not fit
393 caloFlag = in.GetCaloFlag();
394 // if (caloFlag != 0 && caloFlag != 1) continue;
395 if (caloFlag > 2) continue; // Work with ALTRO and FALTRO
397 //Do not fit bad channels of ALTRO
398 if(caloFlag < 2 && fRemoveBadChannels && pedbadmap->IsBadChannel(in.GetModule(),in.GetColumn(),in.GetRow())) {
399 //printf("Tower from SM %d, column %d, row %d is BAD!!! Skip \n", in.GetModule(),in.GetColumn(),in.GetRow());
403 vector<AliCaloBunchInfo> bunchlist;
404 while (in.NextBunch()) {
405 bunchlist.push_back( AliCaloBunchInfo(in.GetStartTimeBin(), in.GetBunchLength(), in.GetSignals() ) );
406 } // loop over bunches
412 short timeEstimate = 0;
413 Float_t ampEstimate = 0;
414 Bool_t fitDone = kFALSE;
418 if ( fFittingAlgorithm == Algo::kFastFit || fFittingAlgorithm == Algo::kNeuralNet ||
419 fFittingAlgorithm == Algo::kLMS || fFittingAlgorithm == Algo::kPeakFinder ||
420 fFittingAlgorithm == Algo::kCrude) {
421 // all functionality to determine amp and time etc is encapsulated inside the Evaluate call for these methods
422 AliCaloFitResults fitResults = fRawAnalyzer->Evaluate( bunchlist, in.GetAltroCFG1(), in.GetAltroCFG2());
424 amp = fitResults.GetAmp();
425 time = fitResults.GetTime();
426 timeEstimate = fitResults.GetMaxTimebin();
427 ampEstimate = fitResults.GetMaxSig();
428 chi2 = fitResults.GetChi2();
429 ndf = fitResults.GetNdf();
430 if (fitResults.GetStatus() == Ret::kFitPar) {
434 else { // for the other methods we for now use the functionality of
435 // AliCaloRawAnalyzer as well, to select samples and prepare for fits,
436 // if it looks like there is something to fit
439 Float_t pedEstimate = 0;
443 Int_t bunchIndex = 0;
445 // The PreFitEvaluateSamples + later call to FitRaw will hopefully
446 // be replaced by a single Evaluate call or so soon, like for the other
447 // methods, but this should be good enough for evaluation of
448 // the methods for now (Jan. 2010)
450 int nsamples = fRawAnalyzer->PreFitEvaluateSamples( bunchlist, in.GetAltroCFG1(), in.GetAltroCFG2(), bunchIndex, ampEstimate, maxADC, timeEstimate, pedEstimate, first, last);
452 if (ampEstimate >= fNoiseThreshold) { // something worth looking at
454 time = timeEstimate; // maxrev in AliCaloRawAnalyzer speak; comes with an offset w.r.t. real timebin
455 Int_t timebinOffset = bunchlist.at(bunchIndex).GetStartBin() - (bunchlist.at(bunchIndex).GetLength()-1);
458 if ( nsamples > 1 && maxADC<fgkOverflowCut ) { // possibly something to fit
459 FitRaw(first, last, amp, time, chi2, fitDone);
460 time += timebinOffset;
461 timeEstimate += timebinOffset;
465 } // ampEstimate check
466 } // method selection
468 if ( fitDone ) { // brief sanity check of fit results
469 Float_t ampAsymm = (amp - ampEstimate)/(amp + ampEstimate);
470 Float_t timeDiff = time - timeEstimate;
471 if ( (TMath::Abs(ampAsymm) > 0.1) || (TMath::Abs(timeDiff) > 2) ) {
472 // AliDebug(2,Form("Fit results amp %f time %f not consistent with expectations amp %f time %d", amp, time, ampEstimate, timeEstimate));
474 // for now just overwrite the fit results with the simple/initial estimate
481 if (amp >= fNoiseThreshold) { // something to be stored
482 if ( ! fitDone) { // smear ADC with +- 0.5 uniform (avoid discrete effects)
483 amp += (0.5 - gRandom->Rndm()); // Rndm generates a number in ]0,1]
486 Int_t id = fGeom->GetAbsCellIdFromCellIndexes(in.GetModule(), in.GetRow(), in.GetColumn()) ;
487 lowGain = in.IsLowGain();
489 // go from time-bin units to physical time fgtimetrigger
490 time = time * GetRawFormatTimeBinWidth(); // skip subtraction of fgTimeTrigger?
491 // subtract RCU L1 phase (L1Phase is in seconds) w.r.t. L0:
492 time -= in.GetL1Phase();
494 AliDebug(2,Form("id %d lowGain %d amp %g", id, lowGain, amp));
495 // printf("Added tower: SM %d, row %d, column %d, amp %3.2f\n",in.GetModule(), in.GetRow(), in.GetColumn(),amp);
497 AddDigit(digitsArr, id, lowGain, amp, time, chi2, ndf);
503 fTriggerRawDigitMaker->Add( bunchlist );
505 } // end while over channel
506 } //end while over DDL's, of input stream
508 fTriggerRawDigitMaker->PostProcess();
510 TrimDigits(digitsArr);
515 //____________________________________________________________________________
516 void AliEMCALRawUtils::AddDigit(TClonesArray *digitsArr, Int_t id, Int_t lowGain, Float_t amp, Float_t time, Float_t chi2, Int_t ndf) {
519 // This routine checks whether a digit exists already for this tower
520 // and then decides whether to use the high or low gain info
522 // Called by Raw2Digits
524 AliEMCALDigit *digit = 0, *tmpdigit = 0;
525 TIter nextdigit(digitsArr);
526 while (digit == 0 && (tmpdigit = (AliEMCALDigit*) nextdigit())) {
527 if (tmpdigit->GetId() == id) digit = tmpdigit;
530 if (!digit) { // no digit existed for this tower; create one
531 Int_t type = AliEMCALDigit::kHG; // use enum in AliEMCALDigit
533 amp *= fHighLowGainFactor;
534 type = AliEMCALDigit::kLGnoHG;
536 Int_t idigit = digitsArr->GetEntries();
537 new((*digitsArr)[idigit]) AliEMCALDigit( -1, -1, id, amp, time, type, idigit, chi2, ndf);
538 AliDebug(2,Form("Add digit Id %d for the first time, type %d", id, type));
539 }//digit added first time
540 else { // a digit already exists, check range
541 // (use high gain if signal < cut value, otherwise low gain)
542 if (lowGain) { // new digit is low gain
543 if (digit->GetAmplitude() > fgkOverflowCut) { // use if previously stored (HG) digit is out of range
544 digit->SetAmplitude(fHighLowGainFactor * amp);
545 digit->SetTime(time);
546 digit->SetType(AliEMCALDigit::kLG);
547 AliDebug(2,Form("Add LG digit ID %d for the second time, type %d", digit->GetId(), digit->GetType()));
549 }//new low gain digit
550 else { // new digit is high gain
551 if (amp < fgkOverflowCut) { // new digit is high gain; use if not out of range
552 digit->SetAmplitude(amp);
553 digit->SetTime(time);
554 digit->SetType(AliEMCALDigit::kHG);
555 AliDebug(2,Form("Add HG digit ID %d for the second time, type %d", digit->GetId(), digit->GetType()));
557 else { // HG out of range, just change flag value to show that HG did exist
558 digit->SetType(AliEMCALDigit::kLG);
559 AliDebug(2,Form("Change LG digit to HG, ID %d, type %d", digit->GetId(), digit->GetType()));
561 }//new high gain digit
562 }//digit existed replace it
566 //____________________________________________________________________________
567 void AliEMCALRawUtils::TrimDigits(TClonesArray *digitsArr)
569 // Remove digits with only low gain and large time
571 AliEMCALDigit *digit = 0;
573 Int_t nDigits = digitsArr->GetEntriesFast();
574 TIter nextdigit(digitsArr);
575 while ((digit = (AliEMCALDigit*) nextdigit())) {
577 //Check if only LG existed, remove if so
578 if (digit->GetType() == AliEMCALDigit::kLGnoHG) {
579 AliDebug(1,Form("Remove digit with id %d, LGnoHG",digit->GetId()));
580 digitsArr->Remove(digit);
582 //Check if time is too large or too small, remove if so
583 else if(fTimeMin > digit->GetTime() || fTimeMax < digit->GetTime()) {
584 digitsArr->Remove(digit);
585 AliDebug(1,Form("Remove digit with id %d, Bad Time %e",digit->GetId(), digit->GetTime()));
587 // Check if Chi2 is undefined
588 else if (0 > digit->GetChi2()) {
589 digitsArr->Remove(digit);
590 AliDebug(1,Form("Remove digit with id %d, Bad Chi2 %e",digit->GetId(), digit->GetChi2()));
592 //Good digit, just reassign the index of the digit in case there was a previous removal
594 digit->SetIndexInList(n);
599 digitsArr->Compress();
600 AliDebug(1,Form("N Digits before trimming : %d; after array compression %d",nDigits,digitsArr->GetEntriesFast()));
604 //____________________________________________________________________________
605 void AliEMCALRawUtils::FitRaw(const Int_t firstTimeBin, const Int_t lastTimeBin, Float_t & amp, Float_t & time, Float_t & chi2, Bool_t & fitDone) const
606 { // Fits the raw signal time distribution
608 //--------------------------------------------------
609 //Do the fit, different fitting algorithms available
610 //--------------------------------------------------
611 int nsamples = lastTimeBin - firstTimeBin + 1;
614 switch(fFittingAlgorithm) {
615 case Algo::kStandard:
617 if (nsamples < 3) { return; } // nothing much to fit
618 //printf("Standard fitter \n");
620 // Create Graph to hold data we will fit
621 TGraph *gSig = new TGraph( nsamples);
622 for (int i=0; i<nsamples; i++) {
623 Int_t timebin = firstTimeBin + i;
624 gSig->SetPoint(i, timebin, fRawAnalyzer->GetReversed(timebin));
627 TF1 * signalF = new TF1("signal", RawResponseFunction, 0, GetRawFormatTimeBins(), 5);
628 signalF->SetParameters(10.,5.,fTau,fOrder,0.); //set all defaults once, just to be safe
629 signalF->SetParNames("amp","t0","tau","N","ped");
630 signalF->FixParameter(2,fTau); // tau in units of time bin
631 signalF->FixParameter(3,fOrder); // order
632 signalF->FixParameter(4, 0); // pedestal should be subtracted when we get here
633 signalF->SetParameter(1, time);
634 signalF->SetParameter(0, amp);
635 // set rather loose parameter limits
636 signalF->SetParLimits(0, 0.5*amp, 2*amp );
637 signalF->SetParLimits(1, time - 4, time + 4);
640 gSig->Fit(signalF, "QROW"); // Note option 'W': equal errors on all points
641 // assign fit results
642 amp = signalF->GetParameter(0);
643 time = signalF->GetParameter(1);
644 chi2 = signalF->GetChisquare();
647 catch (const std::exception & e) {
648 AliError( Form("TGraph Fit exception %s", e.what()) );
649 // stay with default amp and time in case of exception, i.e. no special action required
654 //printf("Std : Amp %f, time %g\n",amp, time);
655 delete gSig; // delete TGraph
659 //----------------------------
662 if (nsamples < 3) { return; } // nothing much to fit
663 //printf("LogFit \n");
665 // Create Graph to hold data we will fit
666 TGraph *gSigLog = new TGraph( nsamples);
667 for (int i=0; i<nsamples; i++) {
668 Int_t timebin = firstTimeBin + i;
669 gSigLog->SetPoint(timebin, timebin, TMath::Log(fRawAnalyzer->GetReversed(timebin) ) );
672 TF1 * signalFLog = new TF1("signalLog", RawResponseFunctionLog, 0, GetRawFormatTimeBins(), 5);
673 signalFLog->SetParameters(2.3, 5.,fTau,fOrder,0.); //set all defaults once, just to be safe
674 signalFLog->SetParNames("amplog","t0","tau","N","ped");
675 signalFLog->FixParameter(2,fTau); // tau in units of time bin
676 signalFLog->FixParameter(3,fOrder); // order
677 signalFLog->FixParameter(4, 0); // pedestal should be subtracted when we get here
678 signalFLog->SetParameter(1, time);
680 signalFLog->SetParameter(0, TMath::Log(amp));
683 gSigLog->Fit(signalFLog, "QROW"); // Note option 'W': equal errors on all points
685 // assign fit results
686 Double_t amplog = signalFLog->GetParameter(0); //Not Amp, but Log of Amp
687 amp = TMath::Exp(amplog);
688 time = signalFLog->GetParameter(1);
692 //printf("LogFit: Amp %f, time %g\n",amp, time);
696 //----------------------------
698 //----------------------------
699 }//switch fitting algorithms
704 //__________________________________________________________________
705 void AliEMCALRawUtils::FitParabola(const TGraph *gSig, Float_t & amp) const
707 //BEG YS alternative methods to calculate the amplitude
708 Double_t * ymx = gSig->GetX() ;
709 Double_t * ymy = gSig->GetY() ;
711 Double_t ymMaxX[kN] = {0., 0., 0.} ;
712 Double_t ymMaxY[kN] = {0., 0., 0.} ;
714 // find the maximum amplitude
716 for (Int_t ymi = 0; ymi < gSig->GetN(); ymi++) {
717 if (ymy[ymi] > ymMaxY[0] ) {
718 ymMaxY[0] = ymy[ymi] ; //<========== This is the maximum amplitude
719 ymMaxX[0] = ymx[ymi] ;
723 // find the maximum by fitting a parabola through the max and the two adjacent samples
724 if ( ymiMax < gSig->GetN()-1 && ymiMax > 0) {
725 ymMaxY[1] = ymy[ymiMax+1] ;
726 ymMaxY[2] = ymy[ymiMax-1] ;
727 ymMaxX[1] = ymx[ymiMax+1] ;
728 ymMaxX[2] = ymx[ymiMax-1] ;
729 if (ymMaxY[0]*ymMaxY[1]*ymMaxY[2] > 0) {
730 //fit a parabola through the 3 points y= a+bx+x*x*x
738 for (Int_t i = 0; i < kN ; i++) {
741 sx2 += ymMaxX[i]*ymMaxX[i] ;
742 sx3 += ymMaxX[i]*ymMaxX[i]*ymMaxX[i] ;
743 sx4 += ymMaxX[i]*ymMaxX[i]*ymMaxX[i]*ymMaxX[i] ;
744 sxy += ymMaxX[i]*ymMaxY[i] ;
745 sx2y += ymMaxX[i]*ymMaxX[i]*ymMaxY[i] ;
747 Double_t cN = (sx2y*kN-sy*sx2)*(sx3*sx-sx2*sx2)-(sx2y*sx-sxy*sx2)*(sx3*kN-sx*sx2);
748 Double_t cD = (sx4*kN-sx2*sx2)*(sx3*sx-sx2*sx2)-(sx4*sx-sx3*sx2)*(sx3*kN-sx*sx2) ;
749 Double_t c = cN / cD ;
750 Double_t b = ((sx2y*kN-sy*sx2)-c*(sx4*kN-sx2*sx2))/(sx3*kN-sx*sx2) ;
751 Double_t a = (sy-b*sx-c*sx2)/kN ;
752 Double_t xmax = -b/(2*c) ;
753 ymax = a + b*xmax + c*xmax*xmax ;//<========== This is the maximum amplitude
758 Double_t diff = TMath::Abs(1-ymMaxY[0]/amp) ;
761 //printf("Yves : Amp %f, time %g\n",amp, time);
766 //__________________________________________________________________
767 Double_t AliEMCALRawUtils::RawResponseFunction(Double_t *x, Double_t *par)
769 // Matches version used in 2007 beam test
771 // Shape of the electronics raw reponse:
772 // It is a semi-gaussian, 2nd order Gamma function of the general form
774 // xx = (t - t0 + tau) / tau [xx is just a convenient help variable]
775 // F = A * (xx**N * exp( N * ( 1 - xx) ) for xx >= 0
779 // A: par[0] // Amplitude = peak value
785 Double_t signal = 0.;
786 Double_t tau = par[2];
788 Double_t ped = par[4];
789 Double_t xx = ( x[0] - par[1] + tau ) / tau ;
794 signal = ped + par[0] * TMath::Power(xx , n) * TMath::Exp(n * (1 - xx )) ;
799 //__________________________________________________________________
800 Double_t AliEMCALRawUtils::RawResponseFunctionLog(Double_t *x, Double_t *par)
802 // Matches version used in 2007 beam test
804 // Shape of the electronics raw reponse:
805 // It is a semi-gaussian, 2nd order Gamma function of the general form
807 // xx = (t - t0 + tau) / tau [xx is just a convenient help variable]
808 // F = A * (xx**N * exp( N * ( 1 - xx) ) for xx >= 0
812 // Log[A]: par[0] // Amplitude = peak value
818 Double_t signal = 0. ;
819 Double_t tau = par[2];
821 //Double_t ped = par[4]; // not used
822 Double_t xx = ( x[0] - par[1] + tau ) / tau ;
825 signal = par[0] - n*TMath::Log(TMath::Abs(xx)) + n * (1 - xx ) ;
827 signal = par[0] + n*TMath::Log(xx) + n * (1 - xx ) ;
832 //__________________________________________________________________
833 Bool_t AliEMCALRawUtils::RawSampledResponse(const Double_t dtime, const Double_t damp, Int_t * adcH, Int_t * adcL, const Int_t keyErr) const
835 // for a start time dtime and an amplitude damp given by digit,
836 // calculates the raw sampled response AliEMCAL::RawResponseFunction
837 Bool_t lowGain = kFALSE ;
839 // A: par[0] // Amplitude = peak value
845 TF1 signalF("signal", RawResponseFunction, 0, GetRawFormatTimeBins(), 5);
846 signalF.SetParameter(0, damp) ;
847 signalF.SetParameter(1, (dtime + fgTimeTrigger)/fgTimeBinWidth) ;
848 signalF.SetParameter(2, fTau) ;
849 signalF.SetParameter(3, fOrder);
850 signalF.SetParameter(4, fgPedestalValue);
852 Double_t signal=0.0, noise=0.0;
853 for (Int_t iTime = 0; iTime < GetRawFormatTimeBins(); iTime++) {
854 signal = signalF.Eval(iTime) ;
855 // Next lines commeted for the moment but in principle it is not necessary to add
856 // extra noise since noise already added at the digits level.
858 //According to Terry Awes, 13-Apr-2008
859 //add gaussian noise in quadrature to each sample
860 //Double_t noise = gRandom->Gaus(0.,fgFEENoise);
861 //signal = sqrt(signal*signal + noise*noise);
863 // March 17,09 for fast fit simulations by Alexei Pavlinov.
864 // Get from PHOS analysis. In some sense it is open questions.
866 noise = gRandom->Gaus(0.,fgFEENoise);
870 adcH[iTime] = static_cast<Int_t>(signal + 0.5) ;
871 if ( adcH[iTime] > fgkRawSignalOverflow ){ // larger than 10 bits
872 adcH[iTime] = fgkRawSignalOverflow ;
876 signal /= fHighLowGainFactor;
878 adcL[iTime] = static_cast<Int_t>(signal + 0.5) ;
879 if ( adcL[iTime] > fgkRawSignalOverflow) // larger than 10 bits
880 adcL[iTime] = fgkRawSignalOverflow ;
887 //__________________________________________________________________
888 void AliEMCALRawUtils::CalculateChi2(const Double_t* t, const Double_t* y, const Int_t nPoints,
889 const Double_t sig, const Double_t tau, const Double_t amp, const Double_t t0, Double_t &chi2)
892 // t[] - array of time bins
893 // y[] - array of amplitudes after pedestal subtractions;
894 // nPoints - number of points
895 // sig - error of amplitude measurement (one value for all channels)
896 // if sig<0 that mean sig=1.
897 // tau - filter time response (in timebin units)
898 // amp - amplitude at t0;
899 // t0 - time of max amplitude;
902 // ndf = nPoints - 2 when tau fixed
903 // ndf = nPoints - 3 when tau free
904 static Double_t par[5]={0.0, 0.0, 0.0, 2.0, 0.0};
909 // par[3]=n=2.; par[4]=ped=0.0
911 Double_t dy = 0.0, x = 0.0, f=0.0;
912 for(Int_t i=0; i<nPoints; i++){
914 f = RawResponseFunction(&x, par);
917 //printf(" AliEMCALRawUtils::CalculateChi2 : %i : y %f -> f %f : dy %f \n", i, y[i], f, dy);
919 if(sig>0.0) chi2 /= (sig*sig);
922 //__________________________________________________________________
923 void AliEMCALRawUtils::SetFittingAlgorithm(Int_t fitAlgo)
925 //Set fitting algorithm and initialize it if this same algorithm was not set before.
926 //printf("**** Set Algorithm , number %d ****\n",fitAlgo);
928 if(fitAlgo == fFittingAlgorithm && fRawAnalyzer) {
929 //Do nothing, this same algorithm already set before.
930 //printf("**** Algorithm already set before, number %d, %s ****\n",fitAlgo, fRawAnalyzer->GetName());
933 //Initialize the requested algorithm
934 if(fitAlgo != fFittingAlgorithm || !fRawAnalyzer) {
935 //printf("**** Init Algorithm , number %d ****\n",fitAlgo);
937 fFittingAlgorithm = fitAlgo;
938 if (fRawAnalyzer) delete fRawAnalyzer; // delete prev. analyzer if existed.
940 if (fitAlgo == Algo::kFastFit) {
941 fRawAnalyzer = new AliCaloRawAnalyzerFastFit();
943 else if (fitAlgo == Algo::kNeuralNet) {
944 fRawAnalyzer = new AliCaloRawAnalyzerNN();
946 else if (fitAlgo == Algo::kLMS) {
947 fRawAnalyzer = new AliCaloRawAnalyzerLMS();
949 else if (fitAlgo == Algo::kPeakFinder) {
950 fRawAnalyzer = new AliCaloRawAnalyzerPeakFinder();
952 else if (fitAlgo == Algo::kCrude) {
953 fRawAnalyzer = new AliCaloRawAnalyzerCrude();
956 // fRawAnalyzer = new AliCaloRawAnalyzer();