FMD/analysis/AliFMDAnalysisTaskGenerateCorrection.cxx

   1 #include "AliFMDAnalysisTaskGenerateCorrection.h"
   2 #include "AliESDEvent.h"
   3 #include "iostream"
   4 #include "AliESDFMD.h"
   5 #include "TH2F.h"
   6 #include "AliTrackReference.h"
   7 #include "AliStack.h"
   8 #include "AliFMDAnaParameters.h"
   9 #include "AliFMDStripIndex.h"
  10 #include "AliStack.h"
  11 #include "AliMCParticle.h"
  12 #include "AliMCEvent.h"
  13 //#include "AliFMDGeometry.h"
  14 #include "TArray.h"
  15 #include "AliGenEventHeader.h"
  16 #include "AliHeader.h"
  17 #include "AliFMDAnaCalibBackgroundCorrection.h"
  18 #include "AliFMDAnaCalibEventSelectionEfficiency.h"
  19 //#include "AliCDBManager.h"
  20 //#include "AliCDBId.h"
  21 //#include "AliCDBMetaData.h"
  22 #include "TSystem.h"
  23 #include "TROOT.h"
  24 #include "TAxis.h"
  25 ClassImp(AliFMDAnalysisTaskGenerateCorrection)
  26
  27 //_____________________________________________________________________
  28 AliFMDAnalysisTaskGenerateCorrection::AliFMDAnalysisTaskGenerateCorrection():
  29 AliAnalysisTaskSE(),
  30   fListOfHits(),
  31   fListOfPrimaries(),
  32   fListOfCorrection(),
  33   fVertexBins(),
  34   fLastTrackByStrip(0),
  35   fHitsByStrip(0),
  36   fZvtxCut(10),
  37   fNvtxBins(10),
  38   fNbinsEta(200),
  39   fBackground(0),
  40   fEventSelectionEff(0)
  41 {
  42   // Default constructor
  43 }
  44 //_____________________________________________________________________
  45 AliFMDAnalysisTaskGenerateCorrection::AliFMDAnalysisTaskGenerateCorrection(const char* name):
  46   AliAnalysisTaskSE(name),
  47   fListOfHits(),
  48   fListOfPrimaries(),
  49   fListOfCorrection(),
  50   fVertexBins(),
  51   fLastTrackByStrip(0),
  52   fHitsByStrip(0),
  53   fZvtxCut(10),
  54   fNvtxBins(10),
  55   fNbinsEta(200),
  56   fBackground(0),
  57   fEventSelectionEff(0)
  58 {
  59
  60   DefineOutput(1, TList::Class());
  61   DefineOutput(2, TList::Class());
  62   DefineOutput(3, TH1F::Class());
  63   DefineOutput(4, TList::Class());
  64 }
  65 //_____________________________________________________________________
  66 void AliFMDAnalysisTaskGenerateCorrection::UserCreateOutputObjects()
  67 {
  68 // Create the output containers
  69 //
  70
  71   std::cout<<"Creating output objects"<<std::endl;
  72   for(Int_t iring = 0; iring<2;iring++) {
  73     Char_t ringChar = (iring == 0 ? 'I' : 'O');
  74     Int_t nSec = (iring == 1 ? 40 : 20);
  75     for(Int_t v=0; v<fNvtxBins;v++) {
  76
  77       TH2F* hPrimary       = new TH2F(Form("hPrimary_FMD_%c_vtx%d",ringChar,v),
  78                                       Form("hPrimary_FMD_%c_vtx%d",ringChar,v),
  79                                       fNbinsEta, -6,6, nSec, 0,2*TMath::Pi());
  80       hPrimary->Sumw2();
  81       fListOfPrimaries.Add(hPrimary);
  82     }
  83   }
  84
  85
  86
  87   for(Int_t det =1; det<=3;det++) {
  88     Int_t nRings = (det==1 ? 1 : 2);
  89     for(Int_t ring = 0;ring<nRings;ring++) {
  90       Int_t nSec = (ring == 1 ? 40 : 20);
  91       Char_t ringChar = (ring == 0 ? 'I' : 'O');
  92       TH1F* doubleHits = new TH1F(Form("DoubleHits_FMD%d%c",det,ringChar),
  93                                   Form("DoubleHits_FMD%d%c",det,ringChar),fNbinsEta, -6,6);
  94       TH1F* allHits = new TH1F(Form("allHits_FMD%d%c",det,ringChar),
  95                                Form("allHits_FMD%d%c",det,ringChar), fNbinsEta, -6,6);
  96
  97       doubleHits->Sumw2();
  98       allHits->Sumw2();
  99       fListOfHits.Add(allHits);
 100       fListOfHits.Add(doubleHits);
 101
 102       for(Int_t v=0; v<fNvtxBins;v++) {
 103         TH2F* hHits = new TH2F(Form("hHits_FMD%d%c_vtx%d", det,ringChar,v),
 104                                Form("hHits_FMD%d%c_vtx%d", det,ringChar,v),
 105                                fNbinsEta, -6,6, nSec, 0, 2*TMath::Pi());
 106         hHits->Sumw2();
 107         fListOfHits.Add(hHits);
 108
 109       }
 110     }
 111   }
 112
 113   TH1F* hEventsSelected  = new TH1F("EventsSelected","EventsSelected",fNvtxBins,0,fNvtxBins);
 114   TH1F* hEventsAll    = new TH1F("EventsAll","EventsAll",fNvtxBins,0,fNvtxBins);
 115   //  TH1F* hTriggered    = new TH1F("Triggered","Triggered",fNvtxBins,0,fNvtxBins);
 116   // TH1F* hTriggeredAll = new TH1F("TriggeredAll","TriggeredAll",fNvtxBins,0,fNvtxBins);
 117   hEventsSelected->Sumw2();
 118   hEventsAll->Sumw2();
 119   fListOfHits.Add(hEventsSelected);
 120   fListOfPrimaries.Add(hEventsAll);
 121
 122   // fListOfHits.Add(hTriggered);
 123   //  fListOfPrimaries.Add(hTriggeredAll);
 124
 125   fVertexBins.SetName("VertexBins");
 126   fVertexBins.GetXaxis()->Set(fNvtxBins,-1*fZvtxCut,fZvtxCut);
 127
 128 }
 129 //_____________________________________________________________________
 130 void AliFMDAnalysisTaskGenerateCorrection::Init()
 131 {
 132   fLastTrackByStrip.Reset(-1);
 133
 134
 135 }
 136 //_____________________________________________________________________
 137 void AliFMDAnalysisTaskGenerateCorrection::UserExec(Option_t */*option*/)
 138 {
 139
 140   fLastTrackByStrip.Reset(-1);
 141   fHitsByStrip.Reset(0);
 142   AliMCEvent* mcevent = MCEvent();
 143
 144   AliFMDAnaParameters* pars = AliFMDAnaParameters::Instance();
 145
 146
 147   AliESDEvent* esdevent = (AliESDEvent*)InputEvent();
 148   Double_t esdvertex[3];
 149   pars->GetVertex(esdevent,esdvertex);
 150
 151   AliMCParticle* particle = 0;
 152   AliStack* stack = mcevent->Stack();
 153
 154   UShort_t det,sec,strip;
 155   Char_t   ring;
 156
 157   Int_t nTracks                = mcevent->GetNumberOfTracks();
 158   AliHeader* header            = mcevent->Header();
 159   AliGenEventHeader* genHeader = header->GenEventHeader();
 160
 161   TArrayF vertex;
 162   genHeader->PrimaryVertex(vertex);
 163
 164   if(TMath::Abs(vertex.At(2)) > fZvtxCut)
 165     return;
 166
 167   Double_t delta           = 2*fZvtxCut/fNvtxBins;
 168   Double_t vertexBinDouble = (vertex.At(2) + fZvtxCut) / delta;
 169   Int_t    vertexBin       = (Int_t)vertexBinDouble;
 170
 171   // Vertex determination correction
 172   TH1F* hEventsSelected    = (TH1F*)fListOfHits.FindObject("EventsSelected");
 173   TH1F* hEventsAll         = (TH1F*)fListOfPrimaries.FindObject("EventsAll");
 174   // TH1F* hTriggered      = (TH1F*)fListOfHits.FindObject("Triggered");
 175   //  TH1F* hTriggeredAll   = (TH1F*)fListOfPrimaries.FindObject("TriggeredAll");
 176
 177   Bool_t vtxFound = kTRUE;
 178   if(esdvertex[0] == 0 && esdvertex[1] == 0 && esdvertex[2] == 0)
 179     vtxFound = kFALSE;
 180
 181   Bool_t isTriggered = pars->IsEventTriggered(esdevent);
 182
 183   if(vtxFound && isTriggered) {
 184     //hTriggered->Fill(vertexBin);
 185     hEventsSelected->Fill(vertexBin);
 186   }
 187
 188   //if(isTriggered)
 189
 190   hEventsAll->Fill(vertexBin);
 191   //if(vtxFound)
 192   //   hTriggeredAll->Fill(vertexBin);
 193
 194   for(Int_t i = 0 ;i<nTracks;i++) {
 195     particle = (AliMCParticle*) mcevent->GetTrack(i);
 196
 197     if(!particle)
 198       continue;
 199
 200     if(stack->IsPhysicalPrimary(i) && particle->Charge() != 0) {
 201
 202
 203       TH2F* hPrimaryInner = (TH2F*)fListOfPrimaries.FindObject( Form("hPrimary_FMD_%c_vtx%d",'I',vertexBin));
 204       TH2F* hPrimaryOuter = (TH2F*)fListOfPrimaries.FindObject( Form("hPrimary_FMD_%c_vtx%d",'O',vertexBin));
 205       hPrimaryInner->Fill(particle->Eta(),particle->Phi());
 206       hPrimaryOuter->Fill(particle->Eta(),particle->Phi());
 207     }
 208
 209     for(Int_t j=0; j<particle->GetNumberOfTrackReferences();j++) {
 210
 211       AliTrackReference* ref = particle->GetTrackReference(j);
 212
 213       if(ref->DetectorId() != AliTrackReference::kFMD)
 214         continue;
 215       AliFMDStripIndex::Unpack(ref->UserId(),det,ring,sec,strip);
 216       Float_t thisStripTrack = fLastTrackByStrip(det,ring,sec,strip);
 217       if(particle->Charge() != 0 && i != thisStripTrack ) {
 218
 219         Float_t phi = pars->GetPhiFromSector(det,ring,sec);
 220         Float_t eta = pars->GetEtaFromStrip(det,ring,sec,strip,vertex.At(2));
 221
 222         TH2F* hHits = (TH2F*)fListOfHits.FindObject(Form("hHits_FMD%d%c_vtx%d", det,ring,vertexBin));
 223         hHits->Fill(eta,phi);
 224         Float_t nstrips = (ring =='O' ? 256 : 512);
 225         fHitsByStrip(det,ring,sec,strip) +=1;
 226         TH1F* allHits = (TH1F*)fListOfHits.FindObject(Form("allHits_FMD%d%c",det,ring));
 227         TH1F* doubleHits = (TH1F*)fListOfHits.FindObject(Form("DoubleHits_FMD%d%c",det,ring));
 228
 229         if(fHitsByStrip(det,ring,sec,strip) == 1)
 230           allHits->Fill(eta);
 231
 232         doubleHits->Fill(eta);
 233
 234         fLastTrackByStrip(det,ring,sec,strip) = (Float_t)i;
 235         if(strip >0)
 236           fLastTrackByStrip(det,ring,sec,strip-1) = (Float_t)i;
 237         if(strip < (nstrips - 1))
 238           fLastTrackByStrip(det,ring,sec,strip+1) = (Float_t)i;
 239       }
 240     }
 241
 242   }
 243
 244
 245   PostData(1, &fListOfHits);
 246   PostData(2, &fListOfPrimaries);
 247   PostData(3, &fVertexBins);
 248 }
 249 //_____________________________________________________________________
 250 void AliFMDAnalysisTaskGenerateCorrection::Terminate(Option_t */*option*/)
 251 {
 252   /*  TH1F* allHits = (TH1F*)fListOfHits.FindObject("allHits");
 253   TH1F* doubleHits = (TH1F*)fListOfHits.FindObject("DoubleHits");
 254
 255   doubleHits->Divide(allHits);
 256   GenerateCorrection();
 257   PostData(1, &fListOfHits);
 258   PostData(4, &fListOfCorrection);*/
 259
 260 }
 261 //_____________________________________________________________________
 262 void AliFMDAnalysisTaskGenerateCorrection::GenerateCorrection() {
 263
 264   fBackground         = new AliFMDAnaCalibBackgroundCorrection();
 265   fEventSelectionEff  = new AliFMDAnaCalibEventSelectionEfficiency();
 266
 267   //TH1F* hTriggered      = (TH1F*)fListOfHits.FindObject("Triggered");
 268   //TH1F* hTriggeredAll   = (TH1F*)fListOfPrimaries.FindObject("TriggeredAll");
 269
 270   TH1F* hEventsSelected    = (TH1F*)fListOfHits.FindObject("EventsSelected");
 271   TH1F* hEventsAll         = (TH1F*)fListOfPrimaries.FindObject("EventsAll");
 272
 273   //  hEventsAll->Divide(hEventsAll,hEventsSelected,1,1,"B");
 274
 275
 276   for(Int_t i = 1; i<=hEventsSelected->GetNbinsX(); i++) {
 277     if(hEventsSelected->GetBinContent(i) == 0 )
 278       continue;
 279     Float_t b    = hEventsSelected->GetBinContent(i);
 280     Float_t db   = hEventsSelected->GetBinError(i);
 281     Float_t sum  = hEventsAll->GetBinContent(i);
 282     Float_t dsum = hEventsAll->GetBinError(i);
 283     Float_t a    = sum-b;
 284     Float_t da   = TMath::Sqrt(TMath::Power(db,2) + TMath::Power(dsum,2));
 285
 286     Float_t cor  = sum / b;
 287     Float_t ecor = TMath::Sqrt(TMath::Power(da,2) + TMath::Power(a/(b*db),2)) / b;
 288
 289     hEventsAll->SetBinContent(i,cor);
 290     hEventsAll->SetBinError(i,ecor);
 291
 292   }
 293
 294   fEventSelectionEff->SetCorrection(hEventsAll);
 295
 296   for(Int_t det= 1; det <=3; det++) {
 297     Int_t nRings = (det==1 ? 1 : 2);
 298
 299     for(Int_t iring = 0; iring<nRings; iring++) {
 300       Char_t ring = (iring == 0 ? 'I' : 'O');
 301       TH1F* allHits = (TH1F*)fListOfHits.FindObject(Form("allHits_FMD%d%c",det,ring));
 302       TH1F* doubleHits = (TH1F*)fListOfHits.FindObject(Form("DoubleHits_FMD%d%c",det,ring));
 303       allHits->Divide(doubleHits);
 304
 305       fBackground->SetDoubleHitCorrection(det,ring,allHits);
 306
 307       for(Int_t vertexBin=0;vertexBin<fNvtxBins  ;vertexBin++) {
 308         TH2F* hHits          = (TH2F*)fListOfHits.FindObject(Form("hHits_FMD%d%c_vtx%d", det,ring,vertexBin));
 309         TH2F* hPrimary  = (TH2F*)fListOfPrimaries.FindObject( Form("hPrimary_FMD_%c_vtx%d",ring,vertexBin));
 310         TH2F* hCorrection = (TH2F*)hHits->Clone(Form("FMD%d%c_vtxbin_%d_correction",det,ring,vertexBin));
 311         hCorrection->Divide(hPrimary);
 312         /*for(Int_t i = 1; i<=hCorrection->GetNbinsX();i++)  {
 313           for(Int_t j=1; j<=hCorrection->GetNbinsY();j++) {
 314             if(hCorrection()->GetBinContent(i,j) == 0)
 315               continue;
 316             Float_t a = h
 317
 318
 319           }
 320         }
 321         */
 322
 323         hCorrection->SetTitle(hCorrection->GetName());
 324         fListOfCorrection.Add(hCorrection);
 325         fBackground->SetBgCorrection(det,ring,vertexBin,hCorrection);
 326
 327
 328       }
 329
 330     }
 331   }
 332   TAxis refAxis(fNvtxBins,-1*fZvtxCut,fZvtxCut);
 333   fBackground->SetRefAxis(&refAxis);
 334
 335 }
 336 //_____________________________________________________________________
 337 void AliFMDAnalysisTaskGenerateCorrection::ReadFromFile(const Char_t* filename, Bool_t storeInOCDB, Int_t /*runNo*/) {
 338
 339   TFile infile(filename);
 340   TH1F* hVertex = (TH1F*)infile.Get("VertexBins");
 341   fZvtxCut = hVertex->GetXaxis()->GetXmax();
 342   fNvtxBins = hVertex->GetXaxis()->GetNbins();
 343   fVertexBins.SetName("VertexBins");
 344   fVertexBins.GetXaxis()->Set(fNvtxBins,-1*fZvtxCut,fZvtxCut);
 345
 346   TList* listOfHits = (TList*)infile.Get("Hits");
 347   TList* listOfPrim = (TList*)infile.Get("Primaries");
 348
 349   TH1F* hEventsSelected    = (TH1F*)listOfHits->FindObject("EventsSelected");
 350   TH1F* hEventsAll         = (TH1F*)listOfPrim->FindObject("EventsAll");
 351   fListOfHits.Add(hEventsSelected);
 352   fListOfPrimaries.Add(hEventsAll);
 353
 354   for(Int_t det =1; det<=3;det++)
 355       {
 356         Int_t nRings = (det==1 ? 1 : 2);
 357         for(Int_t ring = 0;ring<nRings;ring++)
 358           {
 359             Char_t ringChar = (ring == 0 ? 'I' : 'O');
 360             TH1F* allHits = (TH1F*)listOfHits->FindObject(Form("allHits_FMD%d%c",det,ringChar));
 361             TH1F* doubleHits = (TH1F*)listOfHits->FindObject(Form("DoubleHits_FMD%d%c",det,ringChar));
 362             fListOfHits.Add(allHits);
 363             fListOfHits.Add(doubleHits);
 364             for(Int_t v=0; v<fNvtxBins;v++)
 365               {
 366
 367                 TH2F* hHits          = (TH2F*)listOfHits->FindObject(Form("hHits_FMD%d%c_vtx%d", det,ringChar,v));
 368                 fListOfHits.Add(hHits);
 369               }
 370           }
 371       }
 372   for(Int_t iring = 0; iring<2;iring++) {
 373     Char_t ringChar = (iring == 0 ? 'I' : 'O');
 374     for(Int_t v=0; v<fNvtxBins;v++) {
 375
 376       TH2F* hPrimary       = (TH2F*)listOfPrim->FindObject( Form("hPrimary_FMD_%c_vtx%d",ringChar,v));
 377       fListOfPrimaries.Add(hPrimary);
 378
 379     }
 380   }
 381   GenerateCorrection();
 382
 383   TFile fout("backgroundFromFile.root","recreate");
 384   fListOfHits.Write();
 385   fListOfPrimaries.Write();
 386   fListOfCorrection.Write();
 387   fVertexBins.Write();
 388
 389   fout.Close();
 390   AliFMDAnaParameters* pars = AliFMDAnaParameters::Instance();
 391   if(storeInOCDB) {
 392     TFile fbg(pars->GetPath(pars->GetBackgroundID()),"RECREATE");
 393     fBackground->Write(AliFMDAnaParameters::GetBackgroundID());
 394     fbg.Close();
 395     TFile feselect(pars->GetPath(pars->GetEventSelectionEffID()),"RECREATE");
 396     fEventSelectionEff->Write(AliFMDAnaParameters::GetEventSelectionEffID());
 397     feselect.Close();
 398
 399   }
 400
 401
 402
 403
 404 }
 405 //_____________________________________________________________________
 406 //
 407 // EOF
 408 //