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 *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as iLs" without express or implied warranty. *
14 **************************************************************************/
19 // This class is a part of a package of high level QA monitoring for TRD.
22 // radomski@physi.uni-heidelberg.de
26 #include "AliTRDqaJPsi.h"
27 #include "AliTRDqaAT.h"
34 #include "AliESDEvent.h"
35 #include "AliESDtrack.h"
36 #include "AliKFParticle.h"
38 #include "TLorentzVector.h"
40 //______________________________________________________________________________
42 AliTRDqaJPsi::AliTRDqaJPsi()
43 : AliAnalysisTask("",""),
50 // default dummy constructor
53 for (Int_t k = 0; k < fgknSteps; k++) {
58 fInvMassDiff[k] = 0x0;
62 for (Int_t l = 0; l < 2*fgknSteps; l++) {
68 for (Int_t i = 0; i < 1000; i++) {
72 for (Int_t j = 0; j < fgknSteps; j++) {
79 //______________________________________________________________________________
80 AliTRDqaJPsi:: AliTRDqaJPsi(const AliTRDqaJPsi & /*trd*/)
81 : AliAnalysisTask("",""),
91 for (Int_t k = 0; k < fgknSteps; k++) {
96 fInvMassDiff[k] = 0x0;
100 for (Int_t l = 0; l < 2*fgknSteps; l++) {
106 for (Int_t i = 0; i < 1000; i++) {
110 for (Int_t j = 0; j < fgknSteps; j++) {
117 //______________________________________________________________________________
118 AliTRDqaJPsi::AliTRDqaJPsi(const char *name)
119 : AliAnalysisTask(name,""),
127 // Input slot #0 works with an Ntuple
128 DefineInput(0, TChain::Class());
129 // Output slot #0 writes into a TH1 container
130 DefineOutput(0, TObjArray::Class()) ;
132 for (Int_t k = 0; k < fgknSteps; k++) {
136 fInvMassVec[k] = 0x0;
137 fInvMassDiff[k] = 0x0;
141 for (Int_t l = 0; l < 2*fgknSteps; l++) {
147 for (Int_t i = 0; i < 1000; i++) {
151 for (Int_t j = 0; j < fgknSteps; j++) {
158 //______________________________________________________________________________
159 void AliTRDqaJPsi::ConnectInputData(const Option_t *)
161 // Initialisation of branch container and histograms
163 //AliInfo(Form("*** Initialization of %s", GetName())) ;
165 fChain = (TChain*)GetInputData(0);
166 fESD = new AliESDEvent();
167 fESD->ReadFromTree(fChain);
170 //________________________________________________________________________
171 void AliTRDqaJPsi::CreateOutputObjects()
174 // Create the objects that contain the analysis output
178 fOutputContainer = new TObjArray(100);
180 const char *charge[2] = {"Neg", "Pos"};
184 for(Int_t i=0; i<fgknSteps; i++) {
186 fStatus[i] = new TH1D(Form("status_%d", i), "status", 32, -0.5, 31.5);
187 fOutputContainer->AddAt(fStatus[i], c++);
189 fInvMass[i] = new TH1D(Form("mass_%d", i), ";m_{inv} (GeV);", 100, 0, 5);
190 fOutputContainer->AddAt(fInvMass[i], c++);
192 fInvMassVec[i] = new TH1D(Form("massVec_%d", i), ";m_{inv} (GeV);", 100, 0, 5);
193 fOutputContainer->AddAt(fInvMassVec[i], c++);
195 fInvMassDiff[i] = new TH1D(Form("massDiff_%d", i), ";m_{inv} (GeV);", 100, -1, 1);
196 fOutputContainer->AddAt(fInvMassDiff[i], c++);
198 fAngleSM[i] = new TH1D(Form("angleSM_%d", i), ";#delta SM", 19, -0.5, 18.5);
199 fOutputContainer->AddAt(fAngleSM[i], c++);
201 fPtAngle[i] = new TH2D(Form("ptAngle_%d", i), ";p_{T} (GeV/c);#delta SM",
202 20, 0, 5, 10, -0.5, 9.5);
203 fOutputContainer->AddAt(fPtAngle[i], c++);
206 for(Int_t j=0; j<2; j++) {
207 fnTracks[j*fgknSteps+i] =
208 new TH1D(Form("nTracks%s_%d", charge[j],i), Form("%s;number of tracks",charge[j]), 100, -0.5, 99.5);
209 fPt[j*fgknSteps+i] = new TH1D(Form("pt%s_%d", charge[j], i), Form("%s;p_{T} (GeV/c)", charge[j]), 100, 0, 5);
210 fPID[j*fgknSteps+i] = new TH1D(Form("pid%s_%d", charge[j], i), ";electron LQ", 100, 0, 1);
212 fOutputContainer->AddAt(fnTracks[j*fgknSteps+i], c++);
213 fOutputContainer->AddAt(fPt[j*fgknSteps+i], c++);
214 fOutputContainer->AddAt(fPID[j*fgknSteps+i], c++);
218 //TH2D *fnGoodTracks;
220 printf("n hist = %d\n", c);
222 //______________________________________________________________________________
223 void AliTRDqaJPsi::Exec(Option_t *)
227 - Parameters In and Out
236 Long64_t entry = fChain->GetReadEntry() ;
237 if (!(entry%100)) Info("Exec", "Entry = %lld", entry);
239 // Processing of one event
242 //AliError("fESD is not connected to the input!") ;
247 Int_t nTracks = fESD->GetNumberOfTracks();
248 Int_t cTracks[2*fgknSteps] = {0,0,0,0,0,0,0,0,0,0};
252 for(Int_t i=0; i<nTracks; i++) {
258 // TRDrefit and TRDPid bit
261 AliESDtrack *track = fESD->GetTrack(i);
262 const AliExternalTrackParam *paramOut = track->GetOuterParam();
263 const AliExternalTrackParam *paramIn = track->GetInnerParam();
266 if (!paramIn) continue;
267 if (!paramOut) continue;
270 Int_t charge = (track->Charge() > 0) ? 1 : 0;
271 UInt_t status = track->GetStatus();
272 Double_t pt = track->Pt();
273 Double_t pid = track->GetTRDpid(AliPID::kElectron);
276 track->GetESDpid(esdPid);
278 // create a kalman particle
279 Int_t pdg = (charge == 0)? -11 : 11;
280 for(Int_t k=0; k<fgknSteps; k++) fInSample[fnKFtracks][k] = 0;
282 fVec[fnKFtracks] = CreateVector(track);
283 fTracks[fnKFtracks] = new AliKFParticle(*track, pdg);
284 fSM[fnKFtracks] = AliTRDqaAT::GetSector(paramOut->GetAlpha());
287 //AliTRDqaAT::PrintPID(track);
291 cTracks[fgknSteps *charge + step]++;
292 FillHist(track, step++);
294 if (!(status & AliESDtrack::kTRDrefit)) continue;
296 cTracks[fgknSteps *charge + step]++;
297 FillHist(track, step++);
299 if (!(status & AliESDtrack::kTRDpid)) continue;
300 if (track->GetTRDntracklets() < 6) continue;
302 cTracks[fgknSteps *charge + step]++;
303 FillHist(track, step++);
305 if (pt < 0.8) continue;
307 cTracks[fgknSteps *charge + step]++;
308 FillHist(track, step++);
310 if (pid < 0.3) continue; //
311 //if (esdPid[AliPID::kElectron] < 0.5) continue;
313 cTracks[fgknSteps *charge + step]++;
314 FillHist(track, step);
316 for(Int_t k=0; k<2*fgknSteps; k++) fnTracks[k]->Fill(cTracks[k]);
319 // calculate invariant mass
321 for(Int_t k=0; k<fgknSteps; k++) {
322 for(Int_t i=0; i<fnKFtracks; i++) {
323 if (!fInSample[i][k]) continue;
324 for(Int_t j=i+1; j<fnKFtracks; j++) {
325 if (!fInSample[j][k]) continue;
326 AliKFParticle jpsi(*(fTracks[i]), *(fTracks[j]));
327 TLorentzVector jpsiVec = (*(fVec[i])) + (*fVec[j]);
328 fInvMass[k]->Fill(jpsi.GetMass());
329 fInvMassVec[k]->Fill(jpsiVec.M());
330 fInvMassDiff[k]->Fill(jpsiVec.M() - jpsi.GetMass());
332 if (jpsi.GetMass() > 2.5 && jpsi.GetMass() < 3.5) {
333 Int_t dSM = TMath::Abs(fSM[i] - fSM[j]);
334 if (dSM > 9) dSM = (18-dSM);
335 fAngleSM[k]->Fill(dSM);
336 fPtAngle[k]->Fill(TMath::Hypot(jpsi.GetPx(), jpsi.GetPy()), dSM);
343 PostData(0, fOutputContainer);
346 //______________________________________________________________________________
347 void AliTRDqaJPsi::Terminate(Option_t *)
350 fOutputContainer = (TObjArray*)GetOutputData(0);
352 TFile *file = new TFile("outJPsi.root", "RECREATE");
353 fOutputContainer->Write();
359 //for(Int_t i=0; i<fOutputContainer->GetEntries(); i++) {
360 // TObject *obj = fOu
364 //______________________________________________________________________________
366 void AliTRDqaJPsi::FillHist(AliESDtrack *track, Int_t step) {
368 // Fill the histograms
371 Int_t charge = (track->Charge() > 0) ? 1 : 0;
372 UInt_t status = track->GetStatus();
373 Double_t pt = track->Pt();
374 Double_t pid = track->GetTRDpid(AliPID::kElectron);
377 track->GetESDpid(esdPid);
379 Int_t id = charge * fgknSteps + step;
380 AliTRDqaAT::FillStatus(fStatus[step], status);
383 //fPID[id]->Fill(esdPid[AliPID::kElectron]);
385 fInSample[fnKFtracks-1][step] = 1;
388 //______________________________________________________________________________
390 TLorentzVector *AliTRDqaJPsi::CreateVector(AliESDtrack *track) {
392 TLorentzVector *vec = new TLorentzVector();
393 vec->SetXYZM(track->Px(), track->Py(), track->Pz(), 0);
397 //______________________________________________________________________________