ANALYSIS/AliAnalysisTaskPIDResponse.cxx

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   3  *                                                                        *
   4  * Author: The ALICE Off-line Project.                                    *
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  15
  16 /* $Id: AliAnalysisTaskPIDResponse.cxx 43811 2010-09-23 14:13:31Z wiechula $ */
  17 #include <TFile.h>
  18 #include <TChain.h>
  19
  20 #include <AliAnalysisManager.h>
  21 #include <AliInputEventHandler.h>
  22 #include <AliVEventHandler.h>
  23 #include <AliVEvent.h>
  24 #include <AliVParticle.h>
  25 #include <AliVTrack.h>
  26 #include <AliLog.h>
  27 #include <AliPIDResponse.h>
  28 #include <AliESDpid.h>
  29 #include <AliProdInfo.h>
  30
  31 #include "AliAnalysisTaskPIDResponse.h"
  32
  33 ClassImp(AliAnalysisTaskPIDResponse)
  34
  35 //______________________________________________________________________________
  36 AliAnalysisTaskPIDResponse::AliAnalysisTaskPIDResponse():
  37 AliAnalysisTaskSE(),
  38 fIsMC(kFALSE),
  39 fCachePID(kTRUE),
  40 fOADBPath(),
  41 fSpecialDetResponse(),
  42 fPIDResponse(0x0),
  43 fRun(-1),
  44 fOldRun(-1),
  45 fRecoPass(0),
  46 fIsTunedOnData(kFALSE),
  47 fTunedOnDataMask(0),
  48 fRecoPassTuned(0),
  49 fUseTPCEtaCorrection(kFALSE),//TODO: In future, default kTRUE
  50 fUseTPCMultiplicityCorrection(kFALSE)//TODO: In future, default kTRUE
  51 {
  52   //
  53   // Dummy constructor
  54   //
  55 }
  56
  57 //______________________________________________________________________________
  58 AliAnalysisTaskPIDResponse::AliAnalysisTaskPIDResponse(const char* name):
  59 AliAnalysisTaskSE(name),
  60 fIsMC(kFALSE),
  61 fCachePID(kTRUE),
  62 fOADBPath(),
  63 fSpecialDetResponse(),
  64 fPIDResponse(0x0),
  65 fRun(-1),
  66 fOldRun(-1),
  67 fRecoPass(0),
  68 fIsTunedOnData(kFALSE),
  69 fTunedOnDataMask(0),
  70 fRecoPassTuned(0),
  71 fUseTPCEtaCorrection(kFALSE),//TODO: In future, default kTRUE
  72 fUseTPCMultiplicityCorrection(kFALSE)//TODO: In future, default kTRUE
  73 {
  74   //
  75   // Default constructor
  76   //
  77   DefineInput(0,TChain::Class());
  78 }
  79
  80 //______________________________________________________________________________
  81 AliAnalysisTaskPIDResponse::~AliAnalysisTaskPIDResponse()
  82 {
  83   //
  84   // Destructor
  85   //
  86 }
  87
  88 //______________________________________________________________________________
  89 void AliAnalysisTaskPIDResponse::UserCreateOutputObjects()
  90 {
  91   //
  92   // Create the output QA objects
  93   //
  94
  95   AliLog::SetClassDebugLevel("AliAnalysisTaskPIDResponse",10);
  96
  97   //input hander
  98   AliAnalysisManager *man=AliAnalysisManager::GetAnalysisManager();
  99   AliInputEventHandler *inputHandler=dynamic_cast<AliInputEventHandler*>(man->GetInputEventHandler());
 100   if (!inputHandler) AliFatal("Input handler needed");
 101
 102   //pid response object
 103   inputHandler->CreatePIDResponse(fIsMC);
 104   fPIDResponse=inputHandler->GetPIDResponse();
 105   if (!fPIDResponse) AliFatal("PIDResponse object was not created");
 106
 107   fPIDResponse->SetOADBPath(AliAnalysisManager::GetOADBPath());
 108   fPIDResponse->SetCachePID(fCachePID);
 109   if (!fOADBPath.IsNull()) fPIDResponse->SetOADBPath(fOADBPath.Data());
 110
 111   if(fIsTunedOnData) fPIDResponse->SetTunedOnData(kTRUE,fRecoPassTuned);
 112   if(fTunedOnDataMask != 0) fPIDResponse->SetTunedOnDataMask(fTunedOnDataMask);
 113
 114   if (!fSpecialDetResponse.IsNull()){
 115     TObjArray *arr=fSpecialDetResponse.Tokenize("; ");
 116     for (Int_t i=0; i<arr->GetEntriesFast();++i){
 117       TString resp(arr->At(i)->GetName());
 118       if (resp.BeginsWith("TPC:")){
 119         resp.ReplaceAll("TPC:","");
 120         fPIDResponse->SetCustomTPCpidResponse(resp.Data());
 121         AliInfo(Form("Setting custom TPC response file: '%s'",resp.Data()));
 122       }
 123     }
 124     delete arr;
 125   }
 126 }
 127
 128 //______________________________________________________________________________
 129 void AliAnalysisTaskPIDResponse::UserExec(Option_t */*option*/)
 130 {
 131   // Setup the PID response functions and fill the QA histograms
 132   //
 133   AliVEvent *event=InputEvent();
 134   if (!event) return;
 135   fRun=event->GetRunNumber();
 136
 137   if (fRun!=fOldRun){
 138     SetRecoInfo();
 139     fOldRun=fRun;
 140
 141     fPIDResponse->SetUseTPCEtaCorrection(fUseTPCEtaCorrection);
 142     fPIDResponse->SetUseTPCMultiplicityCorrection(fUseTPCMultiplicityCorrection);
 143   }
 144
 145   fPIDResponse->InitialiseEvent(event,fRecoPass);
 146   AliESDpid *pidresp = dynamic_cast<AliESDpid*>(fPIDResponse);
 147   if(pidresp && AliAnalysisManager::GetAnalysisManager()->GetMCtruthEventHandler()){
 148       pidresp->SetEventHandler(AliAnalysisManager::GetAnalysisManager()->GetMCtruthEventHandler());
 149   }
 150   //create and attach transient PID object
 151 //   if (fCachePID) {
 152 //     fPIDResponse->FillTrackDetectorPID();
 153 //   }
 154 }
 155
 156 //______________________________________________________________________________
 157 void AliAnalysisTaskPIDResponse::SetRecoInfo()
 158 {
 159   //
 160   // Set reconstruction information
 161   //
 162
 163   //reset information
 164   fRecoPass=0;
 165
 166   //Get UserInfo from the current tree
 167   AliAnalysisManager *mgr=AliAnalysisManager::GetAnalysisManager();
 168   AliVEventHandler *inputHandler=mgr->GetInputEventHandler();
 169   if (!inputHandler) return;
 170
 171   TList *uiList = inputHandler->GetUserInfo();
 172   AliProdInfo prodInfo(uiList);
 173   prodInfo.List();
 174
 175   TTree *tree= (TTree*)inputHandler->GetTree();
 176   TFile *file= (TFile*)tree->GetCurrentFile();
 177   if (!file) {
 178     AliError("Current file not found, cannot set reconstruction information");
 179     return;
 180   } else {
 181     TString fileName(file->GetName());
 182     fPIDResponse->SetCurrentFile(fileName.Data());
 183   }
 184
 185   fPIDResponse->SetCurrentAliRootRev(prodInfo.GetAlirootSvnVersion());
 186
 187   if (prodInfo.IsMC() == kTRUE) fIsMC=kTRUE;         // protection if user didn't use macro switch
 188   if ( (prodInfo.IsMC() == kFALSE) && (fIsMC == kFALSE) ) {      // reco pass is needed only for data
 189     fRecoPass = prodInfo.GetRecoPass();
 190     if (fRecoPass < 0) {   // as last resort we find pass from file name (UGLY, but not stored in ESDs/AODs before LHC12d )
 191       TString fileName(file->GetName());
 192       if (fileName.Contains("pass1") ) {
 193         fRecoPass=1;
 194       } else if (fileName.Contains("pass2") ) {
 195         fRecoPass=2;
 196       } else if (fileName.Contains("pass3") ) {
 197         fRecoPass=3;
 198       } else if (fileName.Contains("pass4") ) {
 199         fRecoPass=4;
 200       } else if (fileName.Contains("pass5") ) {
 201         fRecoPass=5;
 202       }
 203     }
 204     if (fRecoPass <= 0) {
 205       AliError(" ******** Failed to find reconstruction pass number *********");
 206       AliError(" ******** PID information loaded for 'pass 0': parameters unreliable ******");
 207       AliError("      --> If these are MC data: please set kTRUE first argument of AddTaskPIDResponse");
 208       AliError("      --> If these are real data: please insert pass number inside the path of your local file ******");
 209     }
 210   }
 211
 212 }