PWG3/muon/AliAnalysisTaskESDMuonFilter.cxx

   1 /**************************************************************************
   2  * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
   3  *                                                                        *
   4  * Author: The ALICE Off-line Project.                                    *
   5  * Contributors are mentioned in the code where appropriate.              *
   6  *                                                                        *
   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 is" without express or implied warranty.                  *
  14  **************************************************************************/
  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 "AliAnalysisTaskESDMuonFilter.h"
  32
  33 #include "AliAODDimuon.h"
  34 #include "AliAODEvent.h"
  35 #include "AliAODHandler.h"
  36 #include "AliAODMCParticle.h"
  37 #include "AliAODMuonReplicator.h"
  38 #include "AliAODVertex.h"
  39 #include "AliAnalysisFilter.h"
  40 #include "AliAnalysisManager.h"
  41 #include "AliCodeTimer.h"
  42 #include "AliESDEvent.h"
  43 #include "AliESDInputHandler.h"
  44 #include "AliESDMuonTrack.h"
  45 #include "AliESDVertex.h"
  46 #include "AliESDtrack.h"
  47 #include "AliLog.h"
  48 #include "AliMCEvent.h"
  49 #include "AliMCEventHandler.h"
  50 #include "AliMultiplicity.h"
  51 #include "AliStack.h"
  52 #include <TChain.h>
  53 #include <TFile.h>
  54 #include <TParticle.h>
  55
  56 ClassImp(AliAnalysisTaskESDMuonFilter)
  57 ClassImp(AliAnalysisNonMuonTrackCuts)
  58
  59 ////////////////////////////////////////////////////////////////////////
  60
  61 AliAnalysisNonMuonTrackCuts::AliAnalysisNonMuonTrackCuts()
  62 {
  63   // default ctor
  64 }
  65
  66 Bool_t AliAnalysisNonMuonTrackCuts::IsSelected(TObject* obj)
  67 {
  68   // Returns true if the object is a muon track
  69   AliAODTrack* track = dynamic_cast<AliAODTrack*>(obj);
  70   if (track && track->IsMuonTrack()) return kTRUE;
  71   return kFALSE;
  72 }
  73
  74 AliAnalysisNonPrimaryVertices::AliAnalysisNonPrimaryVertices()
  75 {
  76   // default ctor
  77 }
  78
  79 Bool_t AliAnalysisNonPrimaryVertices::IsSelected(TObject* obj)
  80 {
  81   // Returns true if the object is a primary vertex
  82
  83   AliAODVertex* vertex = dynamic_cast<AliAODVertex*>(obj);
  84   if (vertex)
  85   {
  86     if ( vertex->GetType() == AliAODVertex::kPrimary ||
  87         vertex->GetType() == AliAODVertex::kMainSPD ||
  88         vertex->GetType() == AliAODVertex::kPileupSPD ||
  89         vertex->GetType() == AliAODVertex::kPileupTracks ||
  90         vertex->GetType() == AliAODVertex::kMainTPC )
  91     {
  92       return kTRUE;
  93     }
  94   }
  95
  96 //  enum AODVtx_t {kUndef=-1, kPrimary, kKink, kV0, kCascade, kMulti, kMainSPD, kPileupSPD, kPileupTracks,kMainTPC};
  97
  98   return kFALSE;
  99
 100 }
 101
 102 AliAnalysisTaskESDMuonFilter::AliAnalysisTaskESDMuonFilter(Bool_t onlyMuon, Bool_t keepAllEvents):
 103   AliAnalysisTaskSE(),
 104   fTrackFilter(0x0),
 105   fEnableMuonAOD(kFALSE),
 106   fEnableDimuonAOD(kFALSE),
 107   fOnlyMuon(onlyMuon),
 108   fKeepAllEvents(keepAllEvents)
 109 {
 110   // Default constructor
 111 }
 112
 113 AliAnalysisTaskESDMuonFilter::AliAnalysisTaskESDMuonFilter(const char* name, Bool_t onlyMuon, Bool_t keepAllEvents):
 114   AliAnalysisTaskSE(name),
 115   fTrackFilter(0x0),
 116   fEnableMuonAOD(kFALSE),
 117   fEnableDimuonAOD(kFALSE),
 118   fOnlyMuon(onlyMuon),
 119   fKeepAllEvents(keepAllEvents)
 120 {
 121   // Constructor
 122 }
 123
 124 //______________________________________________________________________________
 125 void AliAnalysisTaskESDMuonFilter::UserCreateOutputObjects()
 126 {
 127   // Create the output container
 128   if (fTrackFilter) OutputTree()->GetUserInfo()->Add(fTrackFilter);
 129 }
 130
 131 //______________________________________________________________________________
 132 void AliAnalysisTaskESDMuonFilter::PrintTask(Option_t *option, Int_t indent) const
 133 {
 134   // Specify how we are configured
 135
 136   AliAnalysisTaskSE::PrintTask(option,indent);
 137
 138   TString spaces(' ',indent+3);
 139
 140   if ( fOnlyMuon )
 141   {
 142     cout << spaces.Data() << "Keep only muon information " << endl;
 143   }
 144   else
 145   {
 146     cout << spaces.Data() << "Keep all information from standard AOD" << endl;
 147   }
 148
 149   if ( fKeepAllEvents )
 150   {
 151     cout << spaces.Data() << "Keep all events, regardless of number of muons" << endl;
 152   }
 153   else
 154   {
 155     cout << spaces.Data() << "Keep only events with at least one muon" << endl;
 156   }
 157 }
 158
 159 //______________________________________________________________________________
 160 void AliAnalysisTaskESDMuonFilter::AddFilteredAOD(const char* aodfilename, const char* title)
 161 {
 162   // Add an output filtered and replicated aod
 163
 164   AliAODHandler *aodH = (AliAODHandler*)((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler());
 165   if (!aodH) Fatal("UserCreateOutputObjects", "No AOD handler");
 166
 167   AliAODExtension* ext = aodH->AddFilteredAOD(aodfilename,title);
 168
 169   if (!ext) return;
 170
 171   if ( fOnlyMuon )
 172   {
 173     AliAODBranchReplicator* murep = new AliAODMuonReplicator("MuonReplicator",
 174                                                              "remove non muon tracks and non primary or pileup vertices",
 175                                                              new AliAnalysisNonMuonTrackCuts,
 176                                                              new AliAnalysisNonPrimaryVertices);
 177
 178     ext->DropUnspecifiedBranches(); // all branches not part of a FilterBranch call (below) will be dropped
 179
 180     ext->FilterBranch("tracks",murep);
 181     ext->FilterBranch("vertices",murep);
 182     ext->FilterBranch("dimuons",murep);
 183   }
 184 }
 185
 186 //______________________________________________________________________________
 187 void AliAnalysisTaskESDMuonFilter::Init()
 188 {
 189   // Initialization
 190   if(fEnableMuonAOD) AddFilteredAOD("AliAOD.Muons.root", "MuonEvents");
 191   if(fEnableDimuonAOD) AddFilteredAOD("AliAOD.Dimuons.root", "DimuonEvents");
 192 }
 193
 194
 195 //______________________________________________________________________________
 196 void AliAnalysisTaskESDMuonFilter::UserExec(Option_t */*option*/)
 197 {
 198   // Execute analysis for current event
 199
 200   Long64_t ientry = Entry();
 201   if(fDebug)printf("Muon Filter: Analysing event # %5d\n", (Int_t) ientry);
 202
 203   ConvertESDtoAOD();
 204 }
 205
 206 //______________________________________________________________________________
 207 void AliAnalysisTaskESDMuonFilter::ConvertESDtoAOD()
 208 {
 209   // ESD Muon Filter analysis task executed for each event
 210
 211   AliCodeTimerAuto("",0);
 212
 213   AliESDEvent* esd = dynamic_cast<AliESDEvent*>(InputEvent());
 214
 215   // Fetch Stack for debuggging if available
 216   AliStack *pStack = 0;
 217   AliMCEventHandler *mcH = 0;
 218   if(MCEvent()){
 219     pStack = MCEvent()->Stack();
 220     mcH = (AliMCEventHandler*) ((AliAnalysisManager::GetAnalysisManager())->GetMCtruthEventHandler());
 221   }
 222
 223   // Define arrays for muons
 224   Double_t pos[3];
 225   Double_t p[3];
 226   Double_t pid[10];
 227
 228   // has to be changed once the muon pid is provided by the ESD
 229   for (Int_t i = 0; i < 10; pid[i++] = 0.) {}
 230   pid[AliAODTrack::kMuon]=1.;
 231
 232   AliAODHeader* header = AODEvent()->GetHeader();
 233   AliAODTrack *aodTrack = 0x0;
 234   AliESDMuonTrack *esdMuTrack = 0x0;
 235
 236   // Access to the AOD container of tracks
 237   TClonesArray &tracks = *(AODEvent()->GetTracks());
 238   Int_t jTracks = header->GetRefMultiplicity();
 239
 240   // Read primary vertex from AOD event
 241   AliAODVertex *primary = AODEvent()->GetPrimaryVertex();
 242   if(fDebug)primary->Print();
 243
 244   // Loop on muon tracks to fill the AOD track branch
 245   Int_t nMuTracks = esd->GetNumberOfMuonTracks();
 246
 247   for (Int_t iTrack=0; iTrack<nMuTracks; ++iTrack) esd->GetMuonTrack(iTrack)->SetESDEvent(esd);
 248
 249   // Update number of positive and negative tracks from AOD event (M.G.)
 250   Int_t nPosTracks = header->GetRefMultiplicityPos();
 251   Int_t nNegTracks = header->GetRefMultiplicityNeg();
 252
 253   // Access to the AOD container of dimuons
 254   TClonesArray &dimuons = *(AODEvent()->GetDimuons());
 255   AliAODDimuon *aodDimuon = 0x0;
 256
 257   Int_t nMuons=0;
 258   Int_t nDimuons=0;
 259   Int_t jDimuons=0;
 260   Int_t nMuonTrack[100];
 261
 262   for(int imuon=0;imuon<100;imuon++) nMuonTrack[imuon]=0;
 263
 264   for (Int_t nMuTrack = 0; nMuTrack < nMuTracks; ++nMuTrack)
 265   {
 266     esdMuTrack = esd->GetMuonTrack(nMuTrack);
 267
 268     if (!esdMuTrack->ContainTrackerData()) continue;
 269
 270     UInt_t selectInfo = 0;
 271     // Track selection
 272     if (fTrackFilter) {
 273         selectInfo = fTrackFilter->IsSelected(esdMuTrack);
 274         if (!selectInfo) {
 275           continue;
 276         }
 277     }
 278
 279     p[0] = esdMuTrack->Px();
 280     p[1] = esdMuTrack->Py();
 281     p[2] = esdMuTrack->Pz();
 282
 283     pos[0] = esdMuTrack->GetNonBendingCoor();
 284     pos[1] = esdMuTrack->GetBendingCoor();
 285     pos[2] = esdMuTrack->GetZ();
 286
 287     if(mcH)mcH->SelectParticle(esdMuTrack->GetLabel());
 288
 289     aodTrack = new(tracks[jTracks++]) AliAODTrack(esdMuTrack->GetUniqueID(), // ID
 290                                                   esdMuTrack->GetLabel(), // label
 291                                                   p, // momentum
 292                                                   kTRUE, // cartesian coordinate system
 293                                                   pos, // position
 294                                                   kFALSE, // isDCA
 295                                                   0x0, // covariance matrix
 296                                                   esdMuTrack->Charge(), // charge
 297                                                   0, // ITSClusterMap
 298                                                   pid, // pid
 299                                                   primary, // primary vertex
 300                                                   kFALSE, // used for vertex fit?
 301                                                   kFALSE, // used for primary vertex fit?
 302                                                   AliAODTrack::kPrimary,// track type
 303                                                   selectInfo);
 304
 305     aodTrack->SetXYAtDCA(esdMuTrack->GetNonBendingCoorAtDCA(), esdMuTrack->GetBendingCoorAtDCA());
 306     aodTrack->SetPxPyPzAtDCA(esdMuTrack->PxAtDCA(), esdMuTrack->PyAtDCA(), esdMuTrack->PzAtDCA());
 307     aodTrack->SetRAtAbsorberEnd(esdMuTrack->GetRAtAbsorberEnd());
 308     aodTrack->ConvertAliPIDtoAODPID();
 309     aodTrack->SetChi2perNDF(esdMuTrack->GetChi2() / (2.*esdMuTrack->GetNHit() - 5.));
 310     aodTrack->SetChi2MatchTrigger(esdMuTrack->GetChi2MatchTrigger());
 311     aodTrack->SetHitsPatternInTrigCh(esdMuTrack->GetHitsPatternInTrigCh());
 312     aodTrack->SetMuonClusterMap(esdMuTrack->GetMuonClusterMap());
 313     aodTrack->SetMatchTrigger(esdMuTrack->GetMatchTrigger());
 314     aodTrack->Connected(esdMuTrack->IsConnected());
 315     primary->AddDaughter(aodTrack);
 316
 317     if (esdMuTrack->Charge() > 0) nPosTracks++;
 318     else nNegTracks++;
 319
 320     nMuonTrack[nMuons]= jTracks-1.;
 321     ++nMuons;
 322   }
 323
 324   if(nMuons>=2)
 325   {
 326     for(int i=0;i<nMuons;i++){
 327       Int_t index0 = nMuonTrack[i];
 328       for(int j=i+1;j<nMuons;j++){
 329         Int_t index1 = nMuonTrack[j];
 330         aodDimuon = new(dimuons[jDimuons++]) AliAODDimuon(tracks.At(index0),tracks.At(index1));
 331         ++nDimuons;
 332         if (fDebug > 1){
 333           AliAODDimuon *dimuon0 = (AliAODDimuon*)dimuons.At(jDimuons-1);
 334           printf("Dimuon: mass = %f, px=%f, py=%f, pz=%f\n",dimuon0->M(),dimuon0->Px(),dimuon0->Py(),dimuon0->Pz());
 335           AliAODTrack  *mu0 = (AliAODTrack*) dimuon0->GetMu(0);
 336           AliAODTrack  *mu1 = (AliAODTrack*) dimuon0->GetMu(1);
 337           printf("Muon0 px=%f py=%f pz=%f\n",mu0->Px(),mu0->Py(),mu0->Pz());
 338           printf("Muon1 px=%f py=%f pz=%f\n",mu1->Px(),mu1->Py(),mu1->Pz());
 339         }
 340       }
 341     }
 342   }
 343
 344
 345   header->SetRefMultiplicity(jTracks);
 346   header->SetRefMultiplicityPos(nPosTracks);
 347   header->SetRefMultiplicityNeg(nNegTracks);
 348   header->SetNumberOfMuons(nMuons);
 349   header->SetNumberOfDimuons(nDimuons);
 350
 351   if ( fEnableMuonAOD && ( (nMuons>0) || fKeepAllEvents ) )
 352   {
 353     AliAODExtension *extMuons = dynamic_cast<AliAODHandler*>
 354     ((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler())->GetFilteredAOD("AliAOD.Muons.root");
 355     extMuons->SelectEvent();
 356   }
 357
 358   if ( fEnableDimuonAOD && ( (nMuons>1) || fKeepAllEvents )  )
 359   {
 360     AliAODExtension *extDimuons = dynamic_cast<AliAODHandler*>
 361     ((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler())->GetFilteredAOD("AliAOD.Dimuons.root");
 362     extDimuons->SelectEvent();
 363   }
 364
 365 }
 366
 367 void AliAnalysisTaskESDMuonFilter::Terminate(Option_t */*option*/)
 368 {
 369   // Terminate analysis
 370   //
 371   if (fDebug > 1) printf("AnalysisESDfilter: Terminate() \n");
 372 }
 373
 374 void  AliAnalysisTaskESDMuonFilter::PrintMCInfo(AliStack *pStack,Int_t label)
 375 {
 376   // print mc info
 377   if(!pStack)return;
 378   label = TMath::Abs(label);
 379   TParticle *part = pStack->Particle(label);
 380   Printf("########################");
 381   Printf("%s:%d %d UniqueID %d PDG %d P %3.3f",(char*)__FILE__,__LINE__,label,part->GetUniqueID(),part->GetPdgCode(),part->P());
 382   part->Print();
 383   TParticle* mother = part;
 384   Int_t imo = part->GetFirstMother();
 385   Int_t nprim = pStack->GetNprimary();
 386   //  while((imo >= nprim) && (mother->GetUniqueID() == 4)) {
 387   while((imo >= nprim)) {
 388     mother =  pStack->Particle(imo);
 389     Printf("Mother %s:%d Label %d UniqueID %d PDG %d P %3.3f",(char*)__FILE__,__LINE__,imo,mother->GetUniqueID(),mother->GetPdgCode(),mother->P());
 390     mother->Print();
 391     imo =  mother->GetFirstMother();
 392   }
 393   Printf("########################");
 394 }