3 #include "AlidNdEtaTask.h"
14 #include <TParticle.h>
17 #include <TObjString.h>
21 #include <AliESDVertex.h>
22 #include <AliESDEvent.h>
24 #include <AliHeader.h>
25 #include <AliGenEventHeader.h>
26 #include <AliMultiplicity.h>
27 #include <AliAnalysisManager.h>
28 #include <AliMCEventHandler.h>
29 #include <AliMCEvent.h>
30 #include <AliESDInputHandler.h>
32 #include "esdTrackCuts/AliESDtrackCuts.h"
33 #include "AliPWG0Helper.h"
34 #include "AliCorrection.h"
35 #include "AliCorrectionMatrix3D.h"
36 #include "dNdEta/dNdEtaAnalysis.h"
38 ClassImp(AlidNdEtaTask)
40 AlidNdEtaTask::AlidNdEtaTask(const char* opt) :
41 AliAnalysisTask("AlidNdEtaTask", ""),
45 fAnalysisMode(AliPWG0Helper::kTPC),
50 fdNdEtaAnalysisESD(0),
57 fdNdEtaAnalysisTrVtx(0),
58 fdNdEtaAnalysisTracks(0),
64 // Constructor. Initialization of pointers
67 // Define input and output slots here
68 DefineInput(0, TChain::Class());
69 DefineOutput(0, TList::Class());
72 AlidNdEtaTask::~AlidNdEtaTask()
78 // histograms are in the output list and deleted when the output
79 // list is deleted by the TSelector dtor
87 //________________________________________________________________________
88 void AlidNdEtaTask::ConnectInputData(Option_t *)
93 Printf("AlidNdEtaTask::ConnectInputData called");
95 TTree* tree = dynamic_cast<TTree*> (GetInputData(0));
97 Printf("ERROR: Could not read tree from input slot 0");
99 // Disable all branches and enable only the needed ones
100 //tree->SetBranchStatus("*", 0);
102 tree->SetBranchStatus("fTriggerMask", 1);
103 tree->SetBranchStatus("fSPDVertex*", 1);
104 // PrimaryVertex also needed
106 if (fAnalysisMode == AliPWG0Helper::kSPD) {
107 tree->SetBranchStatus("fSPDMult*", 1);
108 //AliPWG0Helper::SetBranchStatusRecursive(tree, "AliMultiplicity", kTRUE);
111 if (fAnalysisMode == AliPWG0Helper::kTPC || fAnalysisMode == AliPWG0Helper::kTPCITS) {
112 AliESDtrackCuts::EnableNeededBranches(tree);
113 tree->SetBranchStatus("fTracks.fLabel", 1);
114 //AliPWG0Helper::SetBranchStatusRecursive(tree, "Tracks", kTRUE);
117 AliESDInputHandler *esdH = dynamic_cast<AliESDInputHandler*> (AliAnalysisManager::GetAnalysisManager()->GetInputEventHandler());
120 Printf("ERROR: Could not get ESDInputHandler");
122 fESD = esdH->GetEvent();
125 // disable info messages of AliMCEvent (per event)
126 AliLog::SetClassDebugLevel("AliMCEvent", AliLog::kWarning - AliLog::kDebug + 1);
129 void AlidNdEtaTask::CreateOutputObjects()
131 // create result objects and add to output list
133 Printf("AlidNdEtaTask::CreateOutputObjects");
138 fdNdEtaAnalysisESD = new dNdEtaAnalysis("fdNdEtaAnalysisESD", "fdNdEtaAnalysisESD", fAnalysisMode);
139 fOutput->Add(fdNdEtaAnalysisESD);
141 fMult = new TH1F("fMult", "fMult;Ntracks;Count", 201, -0.5, 200.5);
144 fMultVtx = new TH1F("fMultVtx", "fMultVtx;Ntracks;Count", 201, -0.5, 200.5);
145 fOutput->Add(fMultVtx);
147 for (Int_t i=0; i<3; ++i)
149 fPartEta[i] = new TH1F(Form("dndeta_check_%d", i), Form("dndeta_check_%d", i), 60, -6, 6);
150 fPartEta[i]->Sumw2();
151 fOutput->Add(fPartEta[i]);
154 fEvents = new TH1F("dndeta_check_vertex", "dndeta_check_vertex", 40, -20, 20);
155 fOutput->Add(fEvents);
157 fVertexResolution = new TH1F("dndeta_vertex_resolution_z", "dndeta_vertex_resolution_z", 1000, 0, 10);
158 fOutput->Add(fVertexResolution);
162 fdNdEtaAnalysis = new dNdEtaAnalysis("dndeta", "dndeta", fAnalysisMode);
163 fOutput->Add(fdNdEtaAnalysis);
165 fdNdEtaAnalysisTr = new dNdEtaAnalysis("dndetaTr", "dndetaTr", fAnalysisMode);
166 fOutput->Add(fdNdEtaAnalysisTr);
168 fdNdEtaAnalysisTrVtx = new dNdEtaAnalysis("dndetaTrVtx", "dndetaTrVtx", fAnalysisMode);
169 fOutput->Add(fdNdEtaAnalysisTrVtx);
171 fdNdEtaAnalysisTracks = new dNdEtaAnalysis("dndetaTracks", "dndetaTracks", fAnalysisMode);
172 fOutput->Add(fdNdEtaAnalysisTracks);
174 fVertex = new TH3F("vertex_check", "vertex_check", 50, -50, 50, 50, -50, 50, 50, -50, 50);
175 fOutput->Add(fVertex);
177 fPartPt = new TH1F("dndeta_check_pt", "dndeta_check_pt", 1000, 0, 10);
179 fOutput->Add(fPartPt);
182 if (fAnalysisMode == AliPWG0Helper::kSPD)
183 fDeltaPhi = new TH1F("fDeltaPhi", "fDeltaPhi;#Delta #phi;Entries", 1000, -3.14, 3.14);
186 void AlidNdEtaTask::Exec(Option_t*)
190 // Check prerequisites
193 AliDebug(AliLog::kError, "ESD branch not available");
197 // trigger definition
198 Bool_t eventTriggered = AliPWG0Helper::IsEventTriggered(fESD->GetTriggerMask(), AliPWG0Helper::kMB2);
200 // get the ESD vertex
201 const AliESDVertex* vtxESD = AliPWG0Helper::GetVertex(fESD, fAnalysisMode);
210 // fill z vertex resolution
212 fVertexResolution->Fill(vtxESD->GetZRes());
214 // post the data already here
215 PostData(0, fOutput);
217 // needed for syst. studies
220 if (fUseMCVertex || fUseMCKine) {
222 Printf("ERROR: fUseMCVertex or fUseMCKine set without fReadMC set!");
226 AliMCEventHandler* eventHandler = dynamic_cast<AliMCEventHandler*> (AliAnalysisManager::GetAnalysisManager()->GetMCtruthEventHandler());
228 Printf("ERROR: Could not retrieve MC event handler");
232 AliMCEvent* mcEvent = eventHandler->MCEvent();
234 Printf("ERROR: Could not retrieve MC event");
238 AliHeader* header = mcEvent->Header();
241 AliDebug(AliLog::kError, "Header not available");
247 Printf("WARNING: Replacing vertex by MC vertex. This is for systematical checks only.");
249 AliGenEventHeader* genHeader = header->GenEventHeader();
251 genHeader->PrimaryVertex(vtxMC);
259 stack = mcEvent->Stack();
262 AliDebug(AliLog::kError, "Stack not available");
268 // create list of (label, eta, pt) tuples
269 Int_t inputCount = 0;
273 if (fAnalysisMode == AliPWG0Helper::kSPD)
276 const AliMultiplicity* mult = fESD->GetMultiplicity();
279 AliDebug(AliLog::kError, "AliMultiplicity not available");
283 labelArr = new Int_t[mult->GetNumberOfTracklets()];
284 etaArr = new Float_t[mult->GetNumberOfTracklets()];
285 ptArr = new Float_t[mult->GetNumberOfTracklets()];
287 if (fUseMCKine && stack)
288 Printf("Processing only primaries (MC information used). This is for systematical checks only.");
290 // get multiplicity from ITS tracklets
291 for (Int_t i=0; i<mult->GetNumberOfTracklets(); ++i)
293 //printf("%d %f %f %f\n", i, mult->GetTheta(i), mult->GetPhi(i), mult->GetDeltaPhi(i));
295 if (fUseMCKine && stack)
296 if (mult->GetLabel(i, 0) < 0 || mult->GetLabel(i, 0) != mult->GetLabel(i, 1) || !stack->IsPhysicalPrimary(mult->GetLabel(i, 0)))
299 Float_t deltaPhi = mult->GetDeltaPhi(i);
300 // prevent values to be shifted by 2 Pi()
301 if (deltaPhi < -TMath::Pi())
302 deltaPhi += TMath::Pi() * 2;
303 if (deltaPhi > TMath::Pi())
304 deltaPhi -= TMath::Pi() * 2;
306 if (TMath::Abs(deltaPhi) > 1)
307 printf("WARNING: Very high Delta Phi: %d %f %f %f\n", i, mult->GetTheta(i), mult->GetPhi(i), deltaPhi);
309 fDeltaPhi->Fill(deltaPhi);
311 etaArr[inputCount] = mult->GetEta(i);
312 labelArr[inputCount] = mult->GetLabel(i, 0);
313 ptArr[inputCount] = 0; // no pt for tracklets
317 Printf("Accepted %d tracklets", inputCount);
319 else if (fAnalysisMode == AliPWG0Helper::kTPC || fAnalysisMode == AliPWG0Helper::kTPCITS)
323 AliDebug(AliLog::kError, "fESDTrackCuts not available");
327 // get multiplicity from ESD tracks
328 TObjArray* list = fEsdTrackCuts->GetAcceptedTracks(fESD);
329 Int_t nGoodTracks = list->GetEntries();
331 labelArr = new Int_t[nGoodTracks];
332 etaArr = new Float_t[nGoodTracks];
333 ptArr = new Float_t[nGoodTracks];
335 // loop over esd tracks
336 for (Int_t i=0; i<nGoodTracks; i++)
338 AliESDtrack* esdTrack = dynamic_cast<AliESDtrack*> (list->At(i));
341 AliDebug(AliLog::kError, Form("ERROR: Could not retrieve track %d.", i));
345 etaArr[inputCount] = esdTrack->Eta();
346 labelArr[inputCount] = TMath::Abs(esdTrack->GetLabel());
347 ptArr[inputCount] = esdTrack->Pt();
351 Printf("Accepted %d tracks", nGoodTracks);
358 // Processing of ESD information (always)
362 fMult->Fill(inputCount);
363 fdNdEtaAnalysisESD->FillTriggeredEvent(inputCount);
368 fMultVtx->Fill(inputCount);
370 for (Int_t i=0; i<inputCount; ++i)
372 Float_t eta = etaArr[i];
373 Float_t pt = ptArr[i];
375 fdNdEtaAnalysisESD->FillTrack(vtx[2], eta, pt);
377 if (TMath::Abs(vtx[2]) < 20)
379 fPartEta[0]->Fill(eta);
382 fPartEta[1]->Fill(eta);
384 fPartEta[2]->Fill(eta);
388 // for event count per vertex
389 fdNdEtaAnalysisESD->FillEvent(vtx[2], inputCount);
392 fEvents->Fill(vtx[2]);
396 if (fReadMC) // Processing of MC information (optional)
398 AliMCEventHandler* eventHandler = dynamic_cast<AliMCEventHandler*> (AliAnalysisManager::GetAnalysisManager()->GetMCtruthEventHandler());
400 Printf("ERROR: Could not retrieve MC event handler");
404 AliMCEvent* mcEvent = eventHandler->MCEvent();
406 Printf("ERROR: Could not retrieve MC event");
410 AliStack* stack = mcEvent->Stack();
413 AliDebug(AliLog::kError, "Stack not available");
417 AliHeader* header = mcEvent->Header();
420 AliDebug(AliLog::kError, "Header not available");
425 AliGenEventHeader* genHeader = header->GenEventHeader();
427 genHeader->PrimaryVertex(vtxMC);
429 // loop over mc particles
430 Int_t nPrim = stack->GetNprimary();
432 Int_t nAcceptedParticles = 0;
434 for (Int_t iMc = 0; iMc < nPrim; ++iMc)
436 //Printf("Getting particle %d", iMc);
437 TParticle* particle = stack->Particle(iMc);
442 if (AliPWG0Helper::IsPrimaryCharged(particle, nPrim) == kFALSE)
445 AliDebug(AliLog::kDebug+1, Form("Accepted primary %d, unique ID: %d", iMc, particle->GetUniqueID()));
446 Float_t eta = particle->Eta();
447 Float_t pt = particle->Pt();
449 // make a rough eta cut (so that nAcceptedParticles is not too far off the true measured value (NB: this histograms are only gathered for comparison))
450 if (TMath::Abs(eta) < 1.5 && pt > 0.3)
451 nAcceptedParticles++;
453 fdNdEtaAnalysis->FillTrack(vtxMC[2], eta, pt);
454 fVertex->Fill(particle->Vx(), particle->Vy(), particle->Vz());
458 fdNdEtaAnalysisTr->FillTrack(vtxMC[2], eta, pt);
460 fdNdEtaAnalysisTrVtx->FillTrack(vtxMC[2], eta, pt);
463 if (TMath::Abs(eta) < 0.8)
467 fdNdEtaAnalysis->FillEvent(vtxMC[2], nAcceptedParticles);
470 fdNdEtaAnalysisTr->FillEvent(vtxMC[2], nAcceptedParticles);
472 fdNdEtaAnalysisTrVtx->FillEvent(vtxMC[2], nAcceptedParticles);
475 if (eventTriggered && vtxESD)
477 // from tracks is only done for triggered and vertex reconstructed events
479 for (Int_t i=0; i<inputCount; ++i)
481 Int_t label = labelArr[i];
486 //Printf("Getting particle of track %d", label);
487 TParticle* particle = stack->Particle(label);
491 AliDebug(AliLog::kError, Form("ERROR: Could not retrieve particle %d.", label));
495 fdNdEtaAnalysisTracks->FillTrack(vtxMC[2], particle->Eta(), particle->Pt());
496 } // end of track loop
498 // for event count per vertex
499 fdNdEtaAnalysisTracks->FillEvent(vtxMC[2], inputCount);
508 void AlidNdEtaTask::Terminate(Option_t *)
510 // The Terminate() function is the last function to be called during
511 // a query. It always runs on the client, it can be used to present
512 // the results graphically or save the results to file.
514 fOutput = dynamic_cast<TList*> (GetOutputData(0));
516 Printf("ERROR: fOutput not available");
520 fdNdEtaAnalysisESD = dynamic_cast<dNdEtaAnalysis*> (fOutput->FindObject("fdNdEtaAnalysisESD"));
521 fMult = dynamic_cast<TH1F*> (fOutput->FindObject("fMult"));
522 fMultVtx = dynamic_cast<TH1F*> (fOutput->FindObject("fMultVtx"));
523 fEvents = dynamic_cast<TH1F*> (fOutput->FindObject("dndeta_check_vertex"));
524 fVertexResolution = dynamic_cast<TH1F*> (fOutput->FindObject("dndeta_vertex_resolution_z"));
525 for (Int_t i=0; i<3; ++i)
526 fPartEta[i] = dynamic_cast<TH1F*> (fOutput->FindObject(Form("dndeta_check_%d", i)));
528 if (!fdNdEtaAnalysisESD)
530 AliDebug(AliLog::kError, "ERROR: fdNdEtaAnalysisESD not available");
534 if (fMult && fMultVtx)
538 fMultVtx->SetLineColor(2);
539 fMultVtx->Draw("SAME");
544 Int_t events1 = (Int_t) fEvents->Integral(fEvents->GetXaxis()->FindBin(-19.9), fEvents->GetXaxis()->FindBin(-0.001));
545 Int_t events2 = (Int_t) fEvents->Integral(fEvents->GetXaxis()->FindBin(0.001), fEvents->GetXaxis()->FindBin(19.9));
547 Printf("%d events with vertex used", events1 + events2);
549 if (events1 > 0 && events2 > 0)
551 fPartEta[0]->Scale(1.0 / (events1 + events2));
552 fPartEta[1]->Scale(1.0 / events1);
553 fPartEta[2]->Scale(1.0 / events2);
555 for (Int_t i=0; i<3; ++i)
556 fPartEta[i]->Scale(1.0 / fPartEta[i]->GetBinWidth(1));
558 new TCanvas("control", "control", 500, 500);
559 for (Int_t i=0; i<3; ++i)
561 fPartEta[i]->SetLineColor(i+1);
562 fPartEta[i]->Draw((i==0) ? "" : "SAME");
569 new TCanvas("control3", "control3", 500, 500);
573 TFile* fout = new TFile("analysis_esd_raw.root", "RECREATE");
575 if (fdNdEtaAnalysisESD)
576 fdNdEtaAnalysisESD->SaveHistograms();
579 fEsdTrackCuts->SaveHistograms("esd_tracks_cuts");
587 for (Int_t i=0; i<3; ++i)
589 fPartEta[i]->Write();
594 if (fVertexResolution)
595 fVertexResolution->Write();
603 Printf("Writting result to analysis_esd_raw.root");
607 fdNdEtaAnalysis = dynamic_cast<dNdEtaAnalysis*> (fOutput->FindObject("dndeta"));
608 fdNdEtaAnalysisTr = dynamic_cast<dNdEtaAnalysis*> (fOutput->FindObject("dndetaTr"));
609 fdNdEtaAnalysisTrVtx = dynamic_cast<dNdEtaAnalysis*> (fOutput->FindObject("dndetaTrVtx"));
610 fdNdEtaAnalysisTracks = dynamic_cast<dNdEtaAnalysis*> (fOutput->FindObject("dndetaTracks"));
611 fPartPt = dynamic_cast<TH1F*> (fOutput->FindObject("dndeta_check_pt"));
613 if (!fdNdEtaAnalysis || !fdNdEtaAnalysisTr || !fdNdEtaAnalysisTrVtx || !fPartPt)
615 AliDebug(AliLog::kError, Form("ERROR: Histograms not available %p %p", (void*) fdNdEtaAnalysis, (void*) fPartPt));
619 fdNdEtaAnalysis->Finish(0, -1, AlidNdEtaCorrection::kNone);
620 fdNdEtaAnalysisTr->Finish(0, -1, AlidNdEtaCorrection::kNone);
621 fdNdEtaAnalysisTrVtx->Finish(0, -1, AlidNdEtaCorrection::kNone);
622 fdNdEtaAnalysisTracks->Finish(0, -1, AlidNdEtaCorrection::kNone);
624 Int_t events = (Int_t) fdNdEtaAnalysis->GetData()->GetEventCorrection()->GetMeasuredHistogram()->Integral();
625 fPartPt->Scale(1.0/events);
626 fPartPt->Scale(1.0/fPartPt->GetBinWidth(1));
628 TFile* fout = new TFile("analysis_mc.root","RECREATE");
630 fdNdEtaAnalysis->SaveHistograms();
631 fdNdEtaAnalysisTr->SaveHistograms();
632 fdNdEtaAnalysisTrVtx->SaveHistograms();
633 fdNdEtaAnalysisTracks->SaveHistograms();
639 Printf("Writting result to analysis_mc.root");
643 new TCanvas("control2", "control2", 500, 500);