PWG3/muon/AliAnalysisTaskESDMuonFilter.cxx

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   3  *                                                                        *
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  15
  16 //
  17 // Add the muon tracks to the generic AOD track branch during the
  18 // filtering of the ESD.
  19 //
  20 // Authors: R. Arnaldi 5/5/08 and L. Aphecetche January 2011
  21 //
  22 // Note that we :
  23 //   - completely disable all the branches that are not required by (most) the muon analyses,
  24 //     e.g. cascades, v0s, kinks, jets, etc...
  25 //   - filter severely the tracks (keep only muon tracks) and vertices (keep only primary -including
  26 //     pile-up - vertices) branches
  27 //
  28 // (see AddFilteredAOD method)
  29 //
  30
  31 #include <TChain.h>
  32 #include <TFile.h>
  33 #include <TParticle.h>
  34
  35 #include "AliAnalysisTaskESDMuonFilter.h"
  36 #include "AliAnalysisManager.h"
  37 #include "AliESDEvent.h"
  38 #include "AliAODEvent.h"
  39 #include "AliESDInputHandler.h"
  40 #include "AliAODHandler.h"
  41 #include "AliAnalysisFilter.h"
  42 #include "AliESDtrack.h"
  43 #include "AliESDMuonTrack.h"
  44 #include "AliESDVertex.h"
  45 #include "AliMultiplicity.h"
  46 #include "AliLog.h"
  47 #include "AliStack.h"
  48 #include "AliMCEvent.h"
  49 #include "AliMCEventHandler.h"
  50 #include "AliAODMCParticle.h"
  51 #include "AliAODDimuon.h"
  52 #include "AliAODMuonReplicator.h"
  53 #include "AliAODVertex.h"
  54
  55 ClassImp(AliAnalysisTaskESDMuonFilter)
  56 ClassImp(AliAnalysisNonMuonTrackCuts)
  57
  58 ////////////////////////////////////////////////////////////////////////
  59
  60 AliAnalysisNonMuonTrackCuts::AliAnalysisNonMuonTrackCuts()
  61 {
  62   // default ctor
  63 }
  64
  65 Bool_t AliAnalysisNonMuonTrackCuts::IsSelected(TObject* obj)
  66 {
  67   // Returns true if the object is a muon track
  68   AliAODTrack* track = dynamic_cast<AliAODTrack*>(obj);
  69   if (track && track->IsMuonTrack()) return kTRUE;
  70   return kFALSE;
  71 }
  72
  73 AliAnalysisNonPrimaryVertices::AliAnalysisNonPrimaryVertices()
  74 {
  75   // default ctor
  76 }
  77
  78 Bool_t AliAnalysisNonPrimaryVertices::IsSelected(TObject* obj)
  79 {
  80   // Returns true if the object is a primary vertex
  81
  82   AliAODVertex* vertex = dynamic_cast<AliAODVertex*>(obj);
  83   if (vertex)
  84   {
  85     if ( vertex->GetType() == AliAODVertex::kPrimary ||
  86         vertex->GetType() == AliAODVertex::kMainSPD ||
  87         vertex->GetType() == AliAODVertex::kPileupSPD ||
  88         vertex->GetType() == AliAODVertex::kPileupTracks ||
  89         vertex->GetType() == AliAODVertex::kMainTPC )
  90     {
  91       return kTRUE;
  92     }
  93   }
  94
  95 //  enum AODVtx_t {kUndef=-1, kPrimary, kKink, kV0, kCascade, kMulti, kMainSPD, kPileupSPD, kPileupTracks,kMainTPC};
  96
  97   return kFALSE;
  98
  99 }
 100
 101 AliAnalysisTaskESDMuonFilter::AliAnalysisTaskESDMuonFilter(Bool_t onlyMuon, Bool_t keepAllEvents):
 102   AliAnalysisTaskSE(),
 103   fTrackFilter(0x0),
 104   fEnableMuonAOD(kFALSE),
 105   fEnableDimuonAOD(kFALSE),
 106   fOnlyMuon(onlyMuon),
 107   fKeepAllEvents(keepAllEvents)
 108 {
 109   // Default constructor
 110 }
 111
 112 AliAnalysisTaskESDMuonFilter::AliAnalysisTaskESDMuonFilter(const char* name, Bool_t onlyMuon, Bool_t keepAllEvents):
 113   AliAnalysisTaskSE(name),
 114   fTrackFilter(0x0),
 115   fEnableMuonAOD(kFALSE),
 116   fEnableDimuonAOD(kFALSE),
 117   fOnlyMuon(onlyMuon),
 118   fKeepAllEvents(keepAllEvents)
 119 {
 120   // Constructor
 121 }
 122
 123 //______________________________________________________________________________
 124 void AliAnalysisTaskESDMuonFilter::UserCreateOutputObjects()
 125 {
 126   // Create the output container
 127   if (fTrackFilter) OutputTree()->GetUserInfo()->Add(fTrackFilter);
 128 }
 129
 130 //______________________________________________________________________________
 131 void AliAnalysisTaskESDMuonFilter::PrintTask(Option_t *option, Int_t indent) const
 132 {
 133   // Specify how we are configured
 134
 135   AliAnalysisTaskSE::PrintTask(option,indent);
 136
 137   TString spaces(' ',indent+3);
 138
 139   if ( fOnlyMuon )
 140   {
 141     cout << spaces.Data() << "Keep only muon information " << endl;
 142   }
 143   else
 144   {
 145     cout << spaces.Data() << "Keep all information from standard AOD" << endl;
 146   }
 147
 148   if ( fKeepAllEvents )
 149   {
 150     cout << spaces.Data() << "Keep all events, regardless of number of muons" << endl;
 151   }
 152   else
 153   {
 154     cout << spaces.Data() << "Keep only events with at least one muon" << endl;
 155   }
 156 }
 157
 158 //______________________________________________________________________________
 159 void AliAnalysisTaskESDMuonFilter::AddFilteredAOD(const char* aodfilename, const char* title)
 160 {
 161   // Add an output filtered and replicated aod
 162
 163   AliAODHandler *aodH = (AliAODHandler*)((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler());
 164   if (!aodH) Fatal("UserCreateOutputObjects", "No AOD handler");
 165
 166   AliAODExtension* ext = aodH->AddFilteredAOD(aodfilename,title);
 167
 168   if (!ext) return;
 169
 170   if ( fOnlyMuon )
 171   {
 172     ext->FilterBranch("cascades",0x0);
 173     ext->FilterBranch("v0s",0x0);
 174     ext->FilterBranch("kinks",0x0);
 175     ext->FilterBranch("jets",0x0);
 176     ext->FilterBranch("emcalCells",0x0);
 177     ext->FilterBranch("phosCells",0x0);
 178     ext->FilterBranch("caloClusters",0x0);
 179     ext->FilterBranch("fmdClusters",0x0);
 180     ext->FilterBranch("pmdClusters",0x0);
 181     ext->FilterBranch("tracklets",0x0);
 182
 183     AliAODBranchReplicator* murep = new AliAODMuonReplicator("MuonReplicator",
 184                                                              "remove non muon tracks and non primary or pileup vertices",
 185                                                              new AliAnalysisNonMuonTrackCuts,
 186                                                              new AliAnalysisNonPrimaryVertices);
 187     ext->FilterBranch("tracks",murep);
 188     ext->FilterBranch("vertices",murep);
 189     ext->FilterBranch("dimuons",murep);
 190   }
 191 }
 192
 193 //______________________________________________________________________________
 194 void AliAnalysisTaskESDMuonFilter::Init()
 195 {
 196   // Initialization
 197   if(fEnableMuonAOD) AddFilteredAOD("AliAOD.Muons.root", "MuonEvents");
 198   if(fEnableDimuonAOD) AddFilteredAOD("AliAOD.Dimuons.root", "DimuonEvents");
 199 }
 200
 201
 202 //______________________________________________________________________________
 203 void AliAnalysisTaskESDMuonFilter::UserExec(Option_t */*option*/)
 204 {
 205   // Execute analysis for current event
 206
 207   Long64_t ientry = Entry();
 208   if(fDebug)printf("Muon Filter: Analysing event # %5d\n", (Int_t) ientry);
 209
 210   ConvertESDtoAOD();
 211 }
 212
 213 //______________________________________________________________________________
 214 void AliAnalysisTaskESDMuonFilter::ConvertESDtoAOD()
 215 {
 216   // ESD Muon Filter analysis task executed for each event
 217   AliESDEvent* esd = dynamic_cast<AliESDEvent*>(InputEvent());
 218
 219   // Fetch Stack for debuggging if available
 220   AliStack *pStack = 0;
 221   AliMCEventHandler *mcH = 0;
 222   if(MCEvent()){
 223     pStack = MCEvent()->Stack();
 224     mcH = (AliMCEventHandler*) ((AliAnalysisManager::GetAnalysisManager())->GetMCtruthEventHandler());
 225   }
 226
 227   // Define arrays for muons
 228   Double_t pos[3];
 229   Double_t p[3];
 230   Double_t pid[10];
 231
 232   // has to be changed once the muon pid is provided by the ESD
 233   for (Int_t i = 0; i < 10; pid[i++] = 0.) {}
 234   pid[AliAODTrack::kMuon]=1.;
 235
 236   AliAODHeader* header = AODEvent()->GetHeader();
 237   AliAODTrack *aodTrack = 0x0;
 238   AliESDMuonTrack *esdMuTrack = 0x0;
 239
 240   // Access to the AOD container of tracks
 241   TClonesArray &tracks = *(AODEvent()->GetTracks());
 242   Int_t jTracks = header->GetRefMultiplicity();
 243
 244   // Read primary vertex from AOD event
 245   AliAODVertex *primary = AODEvent()->GetPrimaryVertex();
 246   if(fDebug)primary->Print();
 247
 248   // Loop on muon tracks to fill the AOD track branch
 249   Int_t nMuTracks = esd->GetNumberOfMuonTracks();
 250
 251   for (Int_t iTrack=0; iTrack<nMuTracks; ++iTrack) esd->GetMuonTrack(iTrack)->SetESDEvent(esd);
 252
 253   // Update number of positive and negative tracks from AOD event (M.G.)
 254   Int_t nPosTracks = header->GetRefMultiplicityPos();
 255   Int_t nNegTracks = header->GetRefMultiplicityNeg();
 256
 257   // Access to the AOD container of dimuons
 258   TClonesArray &dimuons = *(AODEvent()->GetDimuons());
 259   AliAODDimuon *aodDimuon = 0x0;
 260
 261   Int_t nMuons=0;
 262   Int_t nDimuons=0;
 263   Int_t jDimuons=0;
 264   Int_t nMuonTrack[100];
 265
 266   for(int imuon=0;imuon<100;imuon++) nMuonTrack[imuon]=0;
 267
 268   for (Int_t nMuTrack = 0; nMuTrack < nMuTracks; ++nMuTrack)
 269   {
 270     esdMuTrack = esd->GetMuonTrack(nMuTrack);
 271
 272     if (!esdMuTrack->ContainTrackerData()) continue;
 273
 274     UInt_t selectInfo = 0;
 275     // Track selection
 276     if (fTrackFilter) {
 277         selectInfo = fTrackFilter->IsSelected(esdMuTrack);
 278         if (!selectInfo) {
 279           continue;
 280         }
 281     }
 282
 283     p[0] = esdMuTrack->Px();
 284     p[1] = esdMuTrack->Py();
 285     p[2] = esdMuTrack->Pz();
 286
 287     pos[0] = esdMuTrack->GetNonBendingCoor();
 288     pos[1] = esdMuTrack->GetBendingCoor();
 289     pos[2] = esdMuTrack->GetZ();
 290
 291     if(mcH)mcH->SelectParticle(esdMuTrack->GetLabel());
 292
 293     aodTrack = new(tracks[jTracks++]) AliAODTrack(esdMuTrack->GetUniqueID(), // ID
 294                                                   esdMuTrack->GetLabel(), // label
 295                                                   p, // momentum
 296                                                   kTRUE, // cartesian coordinate system
 297                                                   pos, // position
 298                                                   kFALSE, // isDCA
 299                                                   0x0, // covariance matrix
 300                                                   esdMuTrack->Charge(), // charge
 301                                                   0, // ITSClusterMap
 302                                                   pid, // pid
 303                                                   primary, // primary vertex
 304                                                   kFALSE, // used for vertex fit?
 305                                                   kFALSE, // used for primary vertex fit?
 306                                                   AliAODTrack::kPrimary,// track type
 307                                                   selectInfo);
 308
 309     aodTrack->SetXYAtDCA(esdMuTrack->GetNonBendingCoorAtDCA(), esdMuTrack->GetBendingCoorAtDCA());
 310     aodTrack->SetPxPyPzAtDCA(esdMuTrack->PxAtDCA(), esdMuTrack->PyAtDCA(), esdMuTrack->PzAtDCA());
 311     aodTrack->SetRAtAbsorberEnd(esdMuTrack->GetRAtAbsorberEnd());
 312     aodTrack->ConvertAliPIDtoAODPID();
 313     aodTrack->SetChi2perNDF(esdMuTrack->GetChi2() / (2.*esdMuTrack->GetNHit() - 5.));
 314     aodTrack->SetChi2MatchTrigger(esdMuTrack->GetChi2MatchTrigger());
 315     aodTrack->SetHitsPatternInTrigCh(esdMuTrack->GetHitsPatternInTrigCh());
 316     aodTrack->SetMuonClusterMap(esdMuTrack->GetMuonClusterMap());
 317     aodTrack->SetMatchTrigger(esdMuTrack->GetMatchTrigger());
 318     aodTrack->Connected(esdMuTrack->IsConnected());
 319     primary->AddDaughter(aodTrack);
 320
 321     if (esdMuTrack->Charge() > 0) nPosTracks++;
 322     else nNegTracks++;
 323
 324     nMuonTrack[nMuons]= jTracks-1.;
 325     ++nMuons;
 326   }
 327
 328   if(nMuons>=2)
 329   {
 330     for(int i=0;i<nMuons;i++){
 331       Int_t index0 = nMuonTrack[i];
 332       for(int j=i+1;j<nMuons;j++){
 333         Int_t index1 = nMuonTrack[j];
 334         aodDimuon = new(dimuons[jDimuons++]) AliAODDimuon(tracks.At(index0),tracks.At(index1));
 335         ++nDimuons;
 336         if (fDebug > 1){
 337           AliAODDimuon *dimuon0 = (AliAODDimuon*)dimuons.At(jDimuons-1);
 338           printf("Dimuon: mass = %f, px=%f, py=%f, pz=%f\n",dimuon0->M(),dimuon0->Px(),dimuon0->Py(),dimuon0->Pz());
 339           AliAODTrack  *mu0 = (AliAODTrack*) dimuon0->GetMu(0);
 340           AliAODTrack  *mu1 = (AliAODTrack*) dimuon0->GetMu(1);
 341           printf("Muon0 px=%f py=%f pz=%f\n",mu0->Px(),mu0->Py(),mu0->Pz());
 342           printf("Muon1 px=%f py=%f pz=%f\n",mu1->Px(),mu1->Py(),mu1->Pz());
 343         }
 344       }
 345     }
 346   }
 347
 348
 349   header->SetRefMultiplicity(jTracks);
 350   header->SetRefMultiplicityPos(nPosTracks);
 351   header->SetRefMultiplicityNeg(nNegTracks);
 352   header->SetNumberOfMuons(nMuons);
 353   header->SetNumberOfDimuons(nDimuons);
 354
 355   if ( fEnableMuonAOD && ( (nMuons>0) || fKeepAllEvents ) )
 356   {
 357     AliAODExtension *extMuons = dynamic_cast<AliAODHandler*>
 358     ((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler())->GetFilteredAOD("AliAOD.Muons.root");
 359     extMuons->SelectEvent();
 360   }
 361
 362   if ( fEnableDimuonAOD && ( (nMuons>1) || fKeepAllEvents )  )
 363   {
 364     AliAODExtension *extDimuons = dynamic_cast<AliAODHandler*>
 365     ((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler())->GetFilteredAOD("AliAOD.Dimuons.root");
 366     extDimuons->SelectEvent();
 367   }
 368
 369 }
 370
 371 void AliAnalysisTaskESDMuonFilter::Terminate(Option_t */*option*/)
 372 {
 373   // Terminate analysis
 374   //
 375   if (fDebug > 1) printf("AnalysisESDfilter: Terminate() \n");
 376 }
 377
 378 void  AliAnalysisTaskESDMuonFilter::PrintMCInfo(AliStack *pStack,Int_t label)
 379 {
 380   // print mc info
 381   if(!pStack)return;
 382   label = TMath::Abs(label);
 383   TParticle *part = pStack->Particle(label);
 384   Printf("########################");
 385   Printf("%s:%d %d UniqueID %d PDG %d P %3.3f",(char*)__FILE__,__LINE__,label,part->GetUniqueID(),part->GetPdgCode(),part->P());
 386   part->Print();
 387   TParticle* mother = part;
 388   Int_t imo = part->GetFirstMother();
 389   Int_t nprim = pStack->GetNprimary();
 390   //  while((imo >= nprim) && (mother->GetUniqueID() == 4)) {
 391   while((imo >= nprim)) {
 392     mother =  pStack->Particle(imo);
 393     Printf("Mother %s:%d Label %d UniqueID %d PDG %d P %3.3f",(char*)__FILE__,__LINE__,imo,mother->GetUniqueID(),mother->GetPdgCode(),mother->P());
 394     mother->Print();
 395     imo =  mother->GetFirstMother();
 396   }
 397   Printf("########################");
 398 }