1 // AliAnalysisTaskBGvsTime
3 // This task computes various histos as a function of time, using a
4 // time stamp made from orbit, bx number and period. It is used for
5 // studies of BG vs time and of luminosity.
7 // The histograms are booked dinamically when they are called the
8 // first time. This simplifies the handling of different trigger
9 // classes (you don't need to know them in advance). The merging is
10 // then complicated, but it is handled via the external class
11 // AliHistoListWrapper.
13 // Different sets of cuts can be used, and the binning of vs time
14 // histos can be defined dynamically (see setters)
16 // Can also process MC, in which case the efficiency x acceptance for
17 // tracks used in the rate (luminosity) histos is also computed, and
18 // put in a histo in which each bin corresponds to a given rate histo
19 // (eta < 0.8 and pt > 0.5 or pt > 1.0 at the time I'm writing this).
21 // The rates are corrected for the dead time, computed using trigger
22 // scalers. WARNING: the dead time computation will NOT WORK on CAF
23 // (it assumes consecutive events).
25 // Author: Michele Floris, CERN
27 #include "AliAnalysisTaskBGvsTime.h"
28 #include "AliESDInputHandler.h"
30 #include "AliVParticle.h"
31 #include "AliESDInputHandlerRP.h"
33 #include "TClonesArray.h"
35 //#include "AliITSRecPoint.h"
36 #include "AliMultiplicity.h"
38 #include "AliAnalysisManager.h"
39 #include "AliBackgroundSelection.h"
43 #include "AliHistoListWrapper.h"
44 #include "AliTriggerAnalysis.h"
46 #include "AliPhysicsSelection.h"
47 #include "AliBackgroundSelection.h"
48 #include "AliESDtrackCuts.h"
50 #include "AliMCEvent.h"
55 ClassImp(AliAnalysisTaskBGvsTime)
59 AliAnalysisTaskBGvsTime::AliAnalysisTaskBGvsTime()
60 : AliAnalysisTaskSE("TaskBGvsTime"),
61 fESD(0),fListHisto(0),fListWrapper(0),fStartTime(0),fEndTime(0),
62 fNMultBins(0), fMultBins(0),fFirstTimeStamp(0), fLastTimeStamp(0), fBinWidth(10), fNoCuts(0), fPhysicsSelection(0), fUsePhysicsSelection(0),
63 fUseZeroBin(0), fIsMC(0), fSkipV0(0), fSkipZeroBin(0), fUseBunchInt(0), fHistoTimeStampVsUTC(0), fHistoTimeStampDiffUTC(0)
68 DefineOutput(1, AliHistoListWrapper::Class());
69 DefineOutput(2, AliPhysicsSelection::Class());
70 // DefineOutput(2, TH1I::Class());
73 AliAnalysisTaskBGvsTime::AliAnalysisTaskBGvsTime(const char * name)
74 : AliAnalysisTaskSE(name),fESD (0),fListHisto(0),fListWrapper(0),fStartTime(0),fEndTime(0),
75 fNMultBins(0),fMultBins(0),fFirstTimeStamp(0), fLastTimeStamp(0), fBinWidth(10), fNoCuts(0), fPhysicsSelection(0), fUsePhysicsSelection(0),
76 fUseZeroBin(0), fIsMC(0), fSkipV0(0), fSkipZeroBin(0), fUseBunchInt(0), fHistoTimeStampVsUTC(0), fHistoTimeStampDiffUTC(0)
79 // Standard constructur which should be used
82 DefineOutput(1, AliHistoListWrapper::Class());
83 DefineOutput(2, AliPhysicsSelection::Class());
84 // DefineOutput(2, TH1I::Class());
88 AliAnalysisTaskBGvsTime::AliAnalysisTaskBGvsTime(const AliAnalysisTaskBGvsTime& obj) :
89 AliAnalysisTaskSE(obj) ,fESD (0),fListHisto(0),fListWrapper(0),fStartTime(0),fEndTime(0),
90 fNMultBins(0),fMultBins(0),fFirstTimeStamp(0), fLastTimeStamp(0), fBinWidth(10), fNoCuts(0), fPhysicsSelection(0), fUsePhysicsSelection(0),
91 fUseZeroBin(0), fIsMC(0), fSkipV0(0), fSkipZeroBin(0), fUseBunchInt(0), fHistoTimeStampVsUTC(0), fHistoTimeStampDiffUTC(0)
95 fListHisto= obj.fListHisto;
96 fListWrapper= obj.fListWrapper;
97 fStartTime= obj.fStartTime;
98 fEndTime= obj.fEndTime;
100 fNMultBins= obj.fNMultBins;
101 fMultBins= obj.fMultBins;
102 fFirstTimeStamp= obj.fFirstTimeStamp;
103 fLastTimeStamp= obj.fLastTimeStamp;
104 fBinWidth= obj.fBinWidth;
105 fNoCuts= obj.fNoCuts;
106 fPhysicsSelection= obj.fPhysicsSelection;
107 fUsePhysicsSelection= obj.fUsePhysicsSelection;
108 fUseZeroBin= obj.fUseZeroBin;
110 fSkipV0= obj.fSkipV0;
111 fSkipZeroBin= obj.fSkipZeroBin;
112 fUseBunchInt= obj.fUseBunchInt;
113 fHistoTimeStampVsUTC = obj.fHistoTimeStampVsUTC;
114 fHistoTimeStampDiffUTC = obj.fHistoTimeStampDiffUTC;
118 AliAnalysisTaskBGvsTime::~AliAnalysisTaskBGvsTime(){
129 if(fPhysicsSelection) {
130 delete fPhysicsSelection;
131 fPhysicsSelection = 0;
133 // Histos should not be destroyed: fListWrapper is owner!
135 void AliAnalysisTaskBGvsTime::UserCreateOutputObjects()
138 fListWrapper = new AliHistoListWrapper("histoListWrapper","histoListWrapper");
139 fListHisto = fListWrapper->GetList();
140 Float_t lenght = fEndTime - fStartTime;
141 Int_t nBins = TMath::FloorNint(lenght/fBinWidth)+1;
142 Int_t end = nBins*fBinWidth;
143 // cover 20 days in UTC. I'll set offset by hand below.
144 Int_t lenghtUTC = 20*3600*24;
145 Int_t nBinsUTC = TMath::FloorNint(Double_t(lenghtUTC)/fBinWidth)+1;
146 Int_t endUTC = nBinsUTC*fBinWidth;
148 Bool_t oldStatus = TH1::AddDirectoryStatus();
149 TH1::AddDirectory(kFALSE);
150 fHistoTimeStampVsUTC = new TH2F ("fHistoTimeStampVsUTC", "fHistoTimeStampVsUTC", nBins, -0.5, end-0.5, nBinsUTC, -0.5, endUTC-0.5);
151 fListHisto->Add(fHistoTimeStampVsUTC);
152 fHistoTimeStampDiffUTC = new TH1F("fHistoTimeStampDiffUTC", "fHistoTimeStampDiffUTC", nBinsUTC, -0.5, endUTC-0.5);
153 fListHisto->Add(fHistoTimeStampDiffUTC);
154 TH1::AddDirectory(oldStatus);
157 fPhysicsSelection = new AliPhysicsSelection();
158 fPhysicsSelection->SetUseBXNumbers();
159 if(fIsMC) fPhysicsSelection->SetAnalyzeMC();
160 fPhysicsSelection->SetBin0Callback(this->GetName());
162 fPhysicsSelection->SetSkipTriggerClassSelection();//
164 AliBackgroundSelection * bg = new AliBackgroundSelection();
165 bg->SetDeltaPhiCut(10);
166 fPhysicsSelection->AddBackgroundIdentification(bg);
169 fPhysicsSelection->SetSkipV0();
175 void AliAnalysisTaskBGvsTime::UserExec(Option_t *)
178 /* PostData(0) is taken care of by AliAnalysisTaskSE */
179 PostData(1,fListWrapper);
180 PostData(2,fPhysicsSelection);
183 const float etaCut = 0.8;
186 fESD = dynamic_cast<AliESDEvent*>(fInputEvent);
187 if (strcmp(fESD->ClassName(),"AliESDEvent")) {
188 AliFatal("Not processing ESDs");
192 fPhysicsSelection->SetComputeBG();
195 // Get V0 flags and trigger flags
196 static AliTriggerAnalysis * triggerAnalysis = new AliTriggerAnalysis();
197 Bool_t v0A = triggerAnalysis->IsOfflineTriggerFired(fESD, AliTriggerAnalysis::kV0A);
198 Bool_t v0C = triggerAnalysis->IsOfflineTriggerFired(fESD, AliTriggerAnalysis::kV0C);
199 Bool_t v0ABG = triggerAnalysis->IsOfflineTriggerFired(fESD, AliTriggerAnalysis::kV0ABG);
200 Bool_t v0CBG = triggerAnalysis->IsOfflineTriggerFired(fESD, AliTriggerAnalysis::kV0CBG);
201 Bool_t mb1Offline = triggerAnalysis->IsOfflineTriggerFired(fESD, AliTriggerAnalysis::kMB1);
202 Bool_t isInV0 = !v0ABG && !v0CBG && ((v0A && !v0C) || (v0C && !v0A)); // try to select beam gas in CINT1A/C events: require one v0 interaction (but not the other) and not BG hit in v0. This should select events produced in between the 2 v0s and boosted forward.
205 // If it is MC: fill histo of generated events for efficiency calculations
207 Bool_t atLeastPt1MC = kFALSE;
208 Bool_t atLeastPt05MC = kFALSE;
211 AliError("No MC info found");
214 //loop on the MC event
215 for (Int_t ipart=0; ipart<fMCEvent->GetNumberOfTracks(); ipart++) {
216 AliMCParticle *mcPart = (AliMCParticle*)fMCEvent->GetTrack(ipart);
218 // We don't care about neutrals and non-physical primaries
219 if(mcPart->Charge() == 0) continue;
220 if(!fMCEvent->Stack()->IsPhysicalPrimary(ipart)) continue;
223 if (TMath::Abs(mcPart->Eta()) < etaCut) {
224 if (mcPart->Pt() > 0.5) atLeastPt05MC = kTRUE;
225 if (mcPart->Pt() > 1.0) atLeastPt1MC = kTRUE;
227 if (atLeastPt1MC && atLeastPt05MC) break; // no need to look for other tracks
230 GetEfficiencyHisto(kEffStepGen)->Fill(kEffPt1);
231 if(mb1Offline) GetEfficiencyHisto(kEffStepTrig)->Fill(kEffPt1);
234 GetEfficiencyHisto(kEffStepGen)->Fill(kEffPt05 );
235 if(mb1Offline) GetEfficiencyHisto(kEffStepTrig)->Fill(kEffPt05);
244 const AliMultiplicity* mult = fESD->GetMultiplicity();
246 AliFatal("No multiplicity object"); // TODO: Should this be fatal?
248 // get number of SPD clusters
249 Int_t spdClusters = 0;
250 for(Int_t ilayer = 0; ilayer < 2; ilayer++){
251 spdClusters += mult->GetNumberOfITSClusters(ilayer);
254 // Bool_t isZeroBin = kFALSE;
255 Bool_t isZeroBin = IsEventInBinZero();
256 if(fUseZeroBin && !isZeroBin) return;
257 if(fSkipZeroBin && isZeroBin ) return;
259 Bool_t physelDecision = fPhysicsSelection->IsCollisionCandidate(fESD);
261 if (fUsePhysicsSelection) {
262 if(!physelDecision) return;
264 else if (!fNoCuts) {if (spdClusters < 2) return;}// At least 2 clusters
265 // else {AliInfo("No Cuts");}
270 Long64_t timeStampBX = 0;
271 timeStampBX = fESD->GetBunchCrossNumber();
272 timeStampBX += (Long64_t) 3564 * (fESD->GetOrbitNumber() + fESD->GetPeriodNumber() * 16777216);
273 timeStampBX = (Long64_t) (25e-9 * timeStampBX);
274 if (fFirstTimeStamp == 0) {
275 fFirstTimeStamp = timeStampBX;
276 fLastTimeStamp = timeStampBX;
278 if (timeStampBX < fFirstTimeStamp) {
279 AliError("Time stamp not monothonic!");
280 fFirstTimeStamp = timeStampBX;
282 if (timeStampBX > fLastTimeStamp) {
283 fLastTimeStamp = timeStampBX;
285 timeStampBX -= fStartTime;
287 Long64_t timeStamp = timeStampBX;
289 Long64_t timeStampGDC = fESD->GetTimeStamp();
291 static TDatime timeOffsetDT(2009,12,5,0,0,0);
292 static Long64_t timeOffset = timeOffsetDT.Convert();
296 // Get trigger scalers for dead time calculation (only data)
297 // Only CINT1B (at least for the time being)
298 AliESDHeader* esdheader = (AliESDHeader*)fESD->GetHeader();
299 static ULong64_t L0 = 0;
300 static ULong64_t L2 = 0;
301 if (fESD->IsTriggerClassFired("CINT1B-ABCE-NOPF-ALL")&&!fIsMC) {
302 AliTriggerScalersRecordESD* scalrecord = (AliTriggerScalersRecordESD*)esdheader->GetTriggerScalersRecord();
303 const AliTriggerScalersESD* scalers = scalrecord->GetTriggerScalersForClass(2); //2 is the cint1b class index in the trigger mask
304 L0 = scalers->GetLOCB(); //L0 before any vetos
305 L2 = scalers->GetL2CA(); //L2 after vetos
309 // loop over trigger classes in the event
310 TObjArray * tokens = 0;
312 // in case of montecarlo I override the trigger class to CINT1B for latter compatibility
313 tokens = new TObjArray;
315 tokens->Add(new TObjString("CINT1B-ABCE-NOPF-ALL"));
318 TString trgClasses = fESD->GetFiredTriggerClasses();
319 tokens = trgClasses.Tokenize(" ");
323 while(TObjString * tok = (TObjString*) iter.Next()){
324 // clean up trigger name
325 TString trg = tok->GetString();
326 trg.Strip(TString::kTrailing, ' ');
327 trg.Strip(TString::kLeading, ' ');
328 // print selected events in !CIN1B trigs:
329 // if(!trg.Contains("CINT1B"))
330 // Printf("File: %s, IEV: %d, TRG: %s, Orbit: 0x%x, Period: %d, BC: %d\n",
331 // ((TTree*) GetInputData(0))->GetCurrentFile()->GetName(), fESD->GetEventNumberInFile(),
333 // fESD->GetOrbitNumber(),fESD->GetPeriodNumber(),fESD->GetBunchCrossNumber());
338 GetVsTimeHistoAll(trg.Data())->Fill(timeStamp);
339 GetVsTimeHisto(trg.Data(),spdClusters,fESD->GetBunchCrossNumber(),"ALL")->Fill(timeStamp);
340 GetVsTimeHisto(trg.Data(),-1, fESD->GetBunchCrossNumber(),"ALL")->Fill(timeStamp);
341 GetVsTimeHisto(trg.Data(),spdClusters,-1, "ALL")->Fill(timeStamp);
342 GetVsTimeHisto(trg.Data(),-1 ,-1, "ALL")->Fill(timeStamp);
344 GetVsTimeHisto(trg.Data(),spdClusters,fESD->GetBunchCrossNumber(),"inV0")->Fill(timeStamp);
345 GetVsTimeHisto(trg.Data(),-1 ,fESD->GetBunchCrossNumber(),"inV0")->Fill(timeStamp);
346 GetVsTimeHisto(trg.Data(),-1 ,-1, "inV0")->Fill(timeStamp);
349 // In order to compute mean multiplicity of spd clusters in a time
350 // bin, we integrate the multiplicity in that bin, and then we
351 // divide for the number of events in that bin in terminate.
353 // Is the error computed correctly if we fill with a weight ? Looping to be sure...
354 for (Int_t iclus = 0; iclus < spdClusters; iclus ++) {
355 GetVsTimeHisto((TString("hMultSPDvsTime_")+trg).Data())->Fill(timeStamp);
356 GetVsTimeHisto(trg.Data(),-1, fESD->GetBunchCrossNumber(),"ALL","MultSPDvsTime")->Fill(timeStamp);
357 GetVsTimeHisto(trg.Data(),spdClusters,fESD->GetBunchCrossNumber(),"ALL","MultSPDvsTime")->Fill(timeStamp);
358 GetVsTimeHisto(trg.Data(),spdClusters,-1, "ALL","MultSPDvsTime")->Fill(timeStamp);
359 GetVsTimeHisto(trg.Data(),-1,-1, "ALL","MultSPDvsTime")->Fill(timeStamp);
361 GetVsTimeHisto(trg.Data(),-1, fESD->GetBunchCrossNumber(),"inV0","MultSPDvsTime")->Fill(timeStamp);
362 GetVsTimeHisto(trg.Data(),spdClusters,fESD->GetBunchCrossNumber(),"inV0","MultSPDvsTime")->Fill(timeStamp);
363 GetVsTimeHisto(trg.Data(),-1,-1, "inV0","MultSPDvsTime")->Fill(timeStamp);
368 // Keep cluster distribution for reference
369 GetDistributionHisto(trg.Data(),kDistSPDMult)->Fill(spdClusters);
370 if(isInV0) GetDistributionHisto(trg.Data(),kDistSPDMult,"_inV0")->Fill(spdClusters);
372 // Distribution of hits per its layer:
373 for(Int_t ilayer = 0; ilayer < 6; ilayer++){
374 GetDistributionHisto(trg.Data(),kDistClsITSLayer)->Fill(ilayer,mult->GetNumberOfITSClusters(ilayer));// fill weighting with the number of CLS
378 // Dead time vs time stamp & time offset
379 // WARNING THIS WON'T WORK ON CAF, NOR GRID: REDO IT WITH A NEW MERGEABLE OBJECT
380 if (trg=="CINT1B-ABCE-NOPF-ALL"&&!fIsMC) {
382 // Fill time difference histos (only for CINt1B)
384 fHistoTimeStampVsUTC->Fill(timeStampBX,timeStampGDC-timeOffset);
385 fHistoTimeStampDiffUTC->Fill(timeStampGDC-timeOffset-timeStampBX);
388 static ULong64_t oldL0 = 0; // L0 counts at the beginning of this bin
389 static ULong64_t oldL2 = 0; // L2 counts at the beginning of this bin
390 static ULong64_t prevL0 = 0; // L0 counts in the previous event
391 static ULong64_t prevL2 = 0; // L2 counts in the previous event
393 static ULong64_t oldTime = 0; // time stamp at the beginning of this bin
394 // static ULong64_t previousTime; // timestamp in the previous event
396 static Int_t prevbin = -1; // bin in the previous event
398 Int_t bin = GetDeadTimeHisto(trg.Data())->FindBin(timeStamp);
400 if (prevbin == -1) { // first event
406 } else if (prevbin != bin) {
407 // New bin: let's fill the previous one
408 Double_t dL0 = Double_t(prevL0 - oldL0);
409 Double_t dL2 = Double_t(prevL2 - oldL2);
411 // Double_t deadtime = Double_t(1 - dL2/dL0); // interested in relative fraction of dead time
412 Double_t deadtime = Double_t(dL2/dL0); // interested in relative fraction of dead time
413 Double_t edeadtime = TMath::Sqrt(dL2*(dL0-dL2)/dL0/dL0/dL0); // Binomial error
415 // cout << "DEADTIME " << endl;
416 // cout << L0 << " " << dL0 << " " << oldL0 << " " << prevL0 << endl;
417 // cout << L2 << " " << dL2 << " " << oldL2 << " " << prevL2 << endl;
418 // cout << deadtime << endl;
421 GetDeadTimeHisto(trg.Data())->SetBinContent(prevbin, deadtime );
422 GetDeadTimeHisto(trg.Data())->SetBinError (prevbin, edeadtime);
435 // TPC track multiplicity vs time
437 // Selection by andrea.dainese@pd.infn.it
442 Bool_t badVertex = kFALSE;
443 const AliESDVertex *vertex = fESD->GetPrimaryVertexTracks();
444 if(vertex->GetNContributors()<1) {
446 vertex = fESD->GetPrimaryVertexSPD();
447 if(vertex->GetNContributors()<1) {
452 // Fill vertex distribution
453 if ( ((vertex->IsFromVertexerZ() && vertex->GetDispersion()<=0.02) || !vertex->IsFromVertexerZ()) && !badVertex ) {
454 GetDistributionHisto(trg.Data(),kDistVertex)->Fill(vertex->GetZ());
455 if (vertex->IsFromVertexerZ()) GetDistributionHisto(trg.Data(),kDistVertexZ) ->Fill(vertex->GetZ());
456 else GetDistributionHisto(trg.Data(),kDistVertex3D)->Fill(vertex->GetZ());
458 if(isInV0) GetDistributionHisto(trg.Data(),kDistVertex,"_inV0")->Fill(vertex->GetZ());
461 // apply a cut |zVertex| < CUT, if needed
463 // Track cuts (except d0 cut)
464 //------- TPC track selection --------
465 // Selection by andrea.dainese@pd.infn.it
468 Bool_t selectPrimaries=kTRUE;
469 static AliESDtrackCuts* esdtrackCutsITSTPC = AliESDtrackCuts::GetStandardITSTPCTrackCuts2009(selectPrimaries);
472 Int_t ntracks = fESD->GetNumberOfTracks();
473 if(badVertex) ntracks = -1; // skip loop if the vertex is bad
475 // flags for luminosity histos
476 Bool_t atLeastPt1 = kFALSE;
477 Bool_t atLeastPt05 = kFALSE;
479 for (Int_t iTrack = 0; iTrack<ntracks; iTrack++) {
480 AliESDtrack * track = dynamic_cast<AliESDtrack*>(fESD->GetTrack(iTrack));
483 // track quality cuts
484 if(!esdtrackCutsITSTPC->AcceptTrack(track)) continue;
486 // bring it to the primary vertex and compute impact parameters
487 if(!track->RelateToVertex(vertex,fESD->GetMagneticField(),kVeryBig)) continue; // this is already done in AliReconstruction...
489 // track-to-vertex cut (see below)
490 if(!SelectOnImpPar(track)) continue;
492 // Fill histos (TPC Multiplicity vs TIME)
493 GetVsTimeHisto(trg.Data(),-1, fESD->GetBunchCrossNumber(),"ALL","MultTPCvsTime")->Fill(timeStamp);
494 GetVsTimeHisto(trg.Data(),spdClusters,fESD->GetBunchCrossNumber(),"ALL","MultTPCvsTime")->Fill(timeStamp);
495 GetVsTimeHisto(trg.Data(),spdClusters,-1, "ALL","MultTPCvsTime")->Fill(timeStamp);
496 GetVsTimeHisto(trg.Data(),-1,-1, "ALL","MultTPCvsTime")->Fill(timeStamp);
497 if ((v0A || v0C) && !(v0ABG || v0CBG)) {
498 GetVsTimeHisto(trg.Data(),-1, fESD->GetBunchCrossNumber(),"inV0","MultTPCvsTime")->Fill(timeStamp);
499 GetVsTimeHisto(trg.Data(),spdClusters,fESD->GetBunchCrossNumber(),"inV0","MultTPCvsTime")->Fill(timeStamp);
500 GetVsTimeHisto(trg.Data(),-1,-1, "inV0","MultTPCvsTime")->Fill(timeStamp);
504 // has the event at least one track satisfying the required conditions? (used for rate/luminosity)
505 if (TMath::Abs(track->Eta()) < etaCut) {
506 // Fill histo (pt distribution with standard cuts)
507 GetDistributionHisto(trg.Data(),kDistPt)->Fill(track->Pt());
508 if (track->Pt() > 0.5) {
511 if (track->Pt() > 1.0) {
517 // TEMPORARY LOOP: FILL DISTRIBUTION OF PT FOR 2 CLASSES OF EVENTS
518 for (Int_t iTrack = 0; iTrack<ntracks; iTrack++) {
519 AliESDtrack * track = dynamic_cast<AliESDtrack*>(fESD->GetTrack(iTrack));
522 // track quality cuts
523 if(!esdtrackCutsITSTPC->AcceptTrack(track)) continue;
525 // bring it to the primary vertex and compute impact parameters
526 if(!track->RelateToVertex(vertex,fESD->GetMagneticField(),kVeryBig)) continue; // this is already done in AliReconstruction...
528 // track-to-vertex cut (see below)
529 if(!SelectOnImpPar(track)) continue;
530 if (TMath::Abs(track->Eta()) < etaCut){
531 if (atLeastPt05) GetDistributionHisto(trg.Data(),kDistPt, "_atLeast05")->Fill(track->Pt());
532 if (atLeastPt1) GetDistributionHisto(trg.Data(),kDistPt, "_atLeast1" )->Fill(track->Pt());
535 // END OF TEMPORARY LOOP
537 // Fill histos for luminosity: rate of events with at least one
538 // track in the pseudo rapidity region |eta| < 0.8 and pt > 0.5 or
541 GetVsTimeHisto(GetVsTimeHistoForLuminosityName(trg.Data(), 0.5))->Fill(timeStamp);
542 if(fIsMC) GetEfficiencyHisto(kEffStepRec)->Fill(kEffPt05);
546 if(GetVsTimeHisto(GetVsTimeHistoForLuminosityName(trg.Data(), 1.0))->Fill(timeStamp) < 0) {
547 AliWarning(Form("Timestamp out of range %lld", timeStamp));
549 if(fIsMC) GetEfficiencyHisto(kEffStepRec)->Fill(kEffPt1);
553 // TPC TRACKS: loose selection in order to keep some BG track
554 ntracks = fESD->GetNumberOfTracks(); // Ignore vertex selecion
555 for(Int_t itrack = 0; itrack < ntracks; itrack++){
556 AliESDtrack * track = dynamic_cast<AliESDtrack*>(fESD->GetTrack(itrack));
558 // Same as AliESDtrackCuts::GetStandardTPCOnlyTrackCuts() , but not using DCA cut
560 AliESDtrackCuts* esdTrackCuts = new AliESDtrackCuts;
562 esdTrackCuts->SetMinNClustersTPC(50);
563 esdTrackCuts->SetMaxChi2PerClusterTPC(4);
564 esdTrackCuts->SetAcceptKinkDaughters(kFALSE);
566 // esdTrackCuts->SetMaxDCAToVertexZ(3.2);
567 // esdTrackCuts->SetMaxDCAToVertexXY(2.4);
568 // esdTrackCuts->SetDCAToVertex2D(kTRUE);
570 if (!esdTrackCuts->AcceptTrack(track)) continue;
571 // Fill pt and DCA distribution
573 GetDistributionHisto(trg.Data(),kDistPtLoose)->Fill(track->Pt());
574 if(isInV0) GetDistributionHisto(trg.Data(),kDistPtLoose, "_inV0")->Fill(track->Pt());
575 // dca (on the xy plane)
576 Float_t xy_dca, z_dca;
577 track->GetImpactParameters(xy_dca,z_dca);
578 GetDistributionHisto(trg.Data(),kDistDCATPC)->Fill(xy_dca);
579 if(isInV0) GetDistributionHisto(trg.Data(),kDistDCATPC, "_inV0")->Fill(track->Pt());
588 void AliAnalysisTaskBGvsTime::Terminate(Option_t *){
590 // normalize and rescale histos
591 AliInfo("Normalizing multiplicity histo") ;
593 fListWrapper = dynamic_cast<AliHistoListWrapper*> (GetOutputData(1));
595 AliError("Cannot get list wrapper");
597 fListHisto = fListWrapper->GetList();
598 fHistoTimeStampDiffUTC = (TH1F*) fListHisto->FindObject("fHistoTimeStampDiffUTC");
599 fHistoTimeStampVsUTC = (TH2F*) fListHisto->FindObject("fHistoTimeStampVsUTC");
601 // Divide rate histos for the number of events
602 TIterator * iter = fListHisto->MakeIterator();
604 while ((h = (TH1*) iter->Next())) {
605 if((TString(h->GetName())).Contains("hMultSPDvsTime_") ||
606 (TString(h->GetName())).Contains("hMultTPCvsTime_")
609 AliInfo(Form("Normalizing %s",h->GetName()));
611 TString histoname = h->GetName();
612 histoname.ReplaceAll("MultSPDvsTime","");
613 histoname.ReplaceAll("MultTPCvsTime","");
615 TH1* hev = (TH1*)fListHisto->FindObject(histoname.Data());
617 AliError(Form(" -> Cannot find events histo %s",histoname.Data()));
620 AliInfo (Form(" with histo %s",hev->GetName()));
621 // Errors on ev num should be ignored in the division
622 Int_t nbin = h->GetNbinsX();
623 for(Int_t ibin = 1; ibin <=nbin; ibin++) {
624 if(hev->GetBinContent(ibin) != 0) {
625 h->SetBinContent(ibin, h->GetBinContent(ibin)/ hev->GetBinContent(ibin));
626 h->SetBinError (ibin, h->GetBinError(ibin) / hev->GetBinContent(ibin));
630 if((TString(h->GetName())).Contains("hRate")){
631 h->Scale(1.,"width"); // divide for bin width to obtain a rate
635 // Compute Efficiency:
637 TH1F* hgen =(TH1F*) fListHisto->FindObject("hEffGen");
638 TH1F* htrg =(TH1F*) fListHisto->FindObject("hEffTrig");
639 TH1F* hrec =(TH1F*) fListHisto->FindObject("hEffRec");
640 if (!hgen || !hrec || !htrg) {
641 AliError("Cannot find eff histos");
644 TH1F* heff = (TH1F*) fListHisto->FindObject("hEffRatio");
645 TH1F* hefftrg = (TH1F*) fListHisto->FindObject("hEffRatioTrg");
647 AliWarning("hEffRatio already in output list?");
650 heff = (TH1F*) hgen->Clone("hEffRatio");
653 heff->Divide(hrec,hgen,1,1,"B");
654 fListHisto->Add(heff);
657 AliWarning("hEffRatioTrg already in output list?");
660 hefftrg = (TH1F*) hgen->Clone("hEffRatioTrg");
663 hefftrg->Divide(htrg,hgen,1,1,"B");
664 fListHisto->Add(hefftrg);
670 AliInfo(Form("Time interval: %lld -- %lld",fFirstTimeStamp,fLastTimeStamp));
672 AliInfo("Saving physics selection histos");
673 fPhysicsSelection = dynamic_cast<AliPhysicsSelection*> (GetOutputData(2));
675 TFile* fout = new TFile("event_stat.root", "RECREATE");
677 if (fPhysicsSelection)
679 fPhysicsSelection->Print();
680 fPhysicsSelection->SaveHistograms("physics_selection");
688 TH1F * AliAnalysisTaskBGvsTime::BookVsTimeHisto(const char * name, const char * title){
690 // Book istograms vs time
692 AliInfo(Form("Booking histo %s",name));
694 Bool_t oldStatus = TH1::AddDirectoryStatus();
695 TH1::AddDirectory(kFALSE);
697 // static Int_t nBins = fEndTime - fStartTime + 1;
698 // Compute bin width and range.
699 // if time interval is not a multiple of bin width drop the last bin
701 Float_t lenght = fEndTime - fStartTime;
702 Int_t nBins = TMath::FloorNint(lenght/fBinWidth)+1;
703 Float_t * bins = new Float_t[nBins+1];
704 for(Int_t ibin = 0; ibin <= nBins; ibin++){
705 Float_t edge = ibin*fBinWidth - 0.5;
706 bins[ibin] = edge < (lenght - 0.5) ? edge : (lenght-0.5);
709 // Int_t end = nBins*fBinWidth;
711 // TH1F * h = new TH1F(name,title, nBins, - 0.5, fEndTime - fStartTime + 0.5);
712 TH1F * h = new TH1F(name,title, nBins, bins);
714 h->SetXTitle("orbit");
717 TH1::AddDirectory(oldStatus);
724 TH1F * AliAnalysisTaskBGvsTime::GetVsTimeHisto(const char * name) {
726 // Returns vs time histo. If not existing, creates it.
728 TH1F * h = (TH1F*) fListHisto->FindObject(name);
729 if(!h) h = BookVsTimeHisto(name,name);
734 TH1F * AliAnalysisTaskBGvsTime::GetEfficiencyHisto(Int_t step) {
736 // Return efficiency histo. If not existing, creates it.
737 // 1 bin per category
739 // Probability of reconstructing one event with at least one
740 // particle in a given category
741 // This is only created for MC.
743 // If the first argument is true, returns the histo at generation
744 // level, otherwise returns the histo at rec level. Fill this histo
745 // with elements of the enum kEffPt1, kEffPt05, ...
747 const char * name = 0;
761 TH1F * h = (TH1F*) fListHisto->FindObject(name);
763 Bool_t oldStatus = TH1::AddDirectoryStatus();
764 TH1::AddDirectory(kFALSE);
765 h = new TH1F (name,name, kNEff, -0.5, kNEff-0.5);
766 h->GetXaxis()->SetBinLabel(h->FindBin(kEffPt1) , "pt > 1.0 GeV");
767 h->GetXaxis()->SetBinLabel(h->FindBin(kEffPt05), "pt > 0.5 GeV");
770 TH1::AddDirectory(oldStatus);
777 const char * AliAnalysisTaskBGvsTime::GetVsTimeHistoForLuminosityName(const char * triggerClass, Float_t ptmin) {
779 // Compose name of rate histos
783 name += triggerClass;
785 name += Form ("_etamin_0.8_ptmin_%2.2f",ptmin);
791 const char * AliAnalysisTaskBGvsTime::GetVsTimeHistoName(const char * triggerClass, Int_t nclusters, Int_t bx, const char * v0flag, const char *prefix){
793 // compose name of vs time histos w/ different cuts
797 name = name +prefix+"_";
798 name += triggerClass;
800 if (nclusters >= 0) {
802 // Add multiplicity label
803 Int_t selected_bin = -1;
804 for(Int_t ibin = 0; ibin < (fNMultBins-1); ibin++){
805 if (nclusters < fMultBins[ibin+1]) {
810 if(selected_bin < 0) {
811 AliError(Form("Cannot get mult bin - %d", nclusters));
812 selected_bin = (fNMultBins-1);
814 name += Form("_SPDCls_%d-%d",fMultBins[selected_bin],fMultBins[selected_bin+1]);
815 // AliInfo(Form("Mult bin: %d, %d, %s", nclusters, selected_bin, name.Data()));
818 name += "_SPDCls_ALL";
820 if(bx < 0) name = name +"_BXALL_"+v0flag;
821 else name = name +"_BX"+long(bx)+"_"+v0flag;
824 const char * AliAnalysisTaskBGvsTime::GetVsTimeHistoNameAll(const char * triggerClass) {
826 // Compose default name of vstime histos in a given trigger class
830 name += triggerClass;
835 TH1F * AliAnalysisTaskBGvsTime::GetDistributionHisto(const char * triggerClass, Int_t dist, const char * suffix) {
837 // Returns distributions histos. If not existing, creates it.
839 // Possible distributions:
841 // - TPC tracks multiplicity
845 // - cluster per ITS layer
855 if (dist == kDistSPDMult) {
857 title = "SPD Cluster Multiplicity (";
858 xtitle = "SPD Clusters";
862 } else if (dist == kDistTPCMult) {
864 title = "TPC Tracks Multiplicity (";
865 xtitle = "TPC Tracks";
869 } else if (dist == kDistPtLoose) {
871 title = "p_{T} distribution - TPC, loose cuts (";
872 xtitle = "p_{T} (GeV)";
876 } else if (dist == kDistPt) {
878 title = "p_{T} distribution - TPC, standard cuts, |#eta|<0.8 (";
879 xtitle = "p_{T} (GeV)";
883 } else if (dist == kDistVertex || dist == kDistVertexZ || dist == kDistVertex3D ) {
888 title = "V_{z} distribution";
889 if (dist == kDistVertexZ) {
890 title += " - Vertexer Z (";
893 else if (dist == kDistVertex3D) {
894 title += " - Vertexer 3D (";
898 xtitle = "V_{z} (cm)";
899 } else if (dist == kDistDCATPC) {
904 title = "TPC DCA distribution - loose cuts (";
906 } else if (dist == kDistClsITSLayer) {
911 title = "Cluster per ITS layer (";
912 xtitle = "ITS Layer";
914 AliError(Form("Distribution type not supported: %d",dist));
919 name += triggerClass;
920 if (suffix) name += suffix;
921 title = title+name+")";
923 TH1F* h = (TH1F*) fListHisto->FindObject(name.Data());
925 if(!h) h = BookDistributionHisto(name.Data(), title.Data(), xtitle.Data(), nbin, min, max);
930 TH1F * AliAnalysisTaskBGvsTime::BookDistributionHisto(const char * name, const char * title, const char * xtitle, Int_t nbin, Float_t min, Float_t max) {
932 // Book distributions histos
934 AliInfo(Form("Booking histo %s",name));
936 Bool_t oldStatus = TH1::AddDirectoryStatus();
937 TH1::AddDirectory(kFALSE);
939 TH1F * h = new TH1F (name,title,nbin,min,max);
941 h->SetXTitle(xtitle);
942 // h->SetYTitle("N");
944 TH1::AddDirectory(oldStatus);
950 TH1F * AliAnalysisTaskBGvsTime::GetDeadTimeHisto(const char * triggerClass) {
951 // returns histo of dead time vs timestamp for a given trigger
952 // class. If the histo does not exist, it books it.
953 TString name = "hDeadTime_" ;
954 TString title = "Dead Time vs TimeStamp (";
956 name += triggerClass;
957 title = title+triggerClass+")";
960 TH1F* h = (TH1F*) fListHisto->FindObject(name.Data());
963 h = BookVsTimeHisto(name.Data(), title.Data());
964 h->SetYTitle("deadtime");
972 // TH2F * AliAnalysisTaskBGvsTime::BookDeadTimeHisto(const char * name, const char * title) {
973 // // Book dead time vs time stamp histos
975 // AliInfo(Form("Booking histo %s",name));
977 // Bool_t oldStatus = TH1::AddDirectoryStatus();
978 // TH1::AddDirectory(kFALSE);
980 // Float_t lenght = fEndTime - fStartTime;
981 // Int_t nBins = TMath::FloorNint(lenght/fBinWidth)+1;
982 // Double_t * bins = new Double_t[nBins+1];
983 // for(Int_t ibin = 0; ibin <= nBins; ibin++){
984 // Float_t edge = ibin*fBinWidth - 0.5;
985 // bins[ibin] = edge < (lenght - 0.5) ? edge : (lenght-0.5);
988 // TH2F * h = new TH2F (name,title,nBins,bins,200,0.,2.);
990 // h->SetXTitle("Time (s)");
991 // h->SetYTitle("Dead Time");
992 // fListHisto->Add(h);
993 // TH1::AddDirectory(oldStatus);
1003 Bool_t AliAnalysisTaskBGvsTime::IsEventInBinZero() {
1005 // Returns true if an event is to be assigned to the zero bin
1007 Bool_t isZeroBin = kTRUE;
1008 const AliESDEvent* esd=fESD;
1009 const AliMultiplicity* mult = esd->GetMultiplicity();
1011 Printf("AliAnalysisTaskBGvsTime::IsBinZero: Can't get mult object");
1014 Int_t ntracklet = mult->GetNumberOfTracklets();
1015 const AliESDVertex * vtxESD = esd->GetPrimaryVertexSPD();
1017 // If there is a vertex from vertexer z with delta phi > 0.02 we
1018 // don't consider it rec (we keep the event in bin0). If quality
1019 // is good eneough we check the number of tracklets
1020 // if the vertex is more than 15 cm away, this is autamatically bin0
1021 if( TMath::Abs(vtxESD->GetZ()) <= 15 ) {
1022 if (vtxESD->IsFromVertexerZ()) {
1023 if (vtxESD->GetDispersion()<=0.02 ) {
1024 if(ntracklet>0) isZeroBin = kFALSE;
1026 } else if(ntracklet>0) isZeroBin = kFALSE; // if the event is not from Vz we chek the n of tracklets
1033 Bool_t AliAnalysisTaskBGvsTime::SelectOnImpPar(AliESDtrack* t) {
1034 // from andrea dainese
1035 // cut on transverse impact parameter
1036 Float_t d0z0[2],covd0z0[3];
1037 t->GetImpactParameters(d0z0,covd0z0);
1038 Float_t sigma= 0.0050+0.0060/TMath::Power(t->Pt(),0.9);
1039 Float_t d0max = 7.*sigma;
1040 if(TMath::Abs(d0z0[0]) < d0max) return kTRUE;