TOF/AliTOFComparison.C

   1 /****************************************************************************
   2  *      This macro estimates efficiency of matching with the TOF.           *
   3  *      TOF "Good" tracks are those originating from the primary vertex,    *
   4  *      being "good" in the ITS and having at least one digit in the TOF.   *
   5  *         (To get the list of "good" tracks one should first run           *
   6  *          AliTPCComparison.C and AliITSComparisonV2.C macros)             *
   7  *           Origin: I.Belikov, CERN, Jouri.Belikov@cern.ch                 *
   8  ****************************************************************************/
   9
  10 #if !defined(__CINT__) || defined(__MAKECINT__)
  11   #include <TMath.h>
  12   #include <TError.h>
  13   #include <Riostream.h>
  14   #include <TH1F.h>
  15   #include <TTree.h>
  16   #include <TParticle.h>
  17   #include <TCanvas.h>
  18   #include <TLine.h>
  19   #include <TText.h>
  20   #include <TBenchmark.h>
  21   #include <TStyle.h>
  22   #include <TFile.h>
  23   #include <TROOT.h>
  24
  25   #include "AliStack.h"
  26   #include "AliHeader.h"
  27   #include "AliTrackReference.h"
  28   #include "AliRunLoader.h"
  29   #include "AliRun.h"
  30   #include "AliESD.h"
  31
  32   #include "AliTOFcluster.h"
  33   #include "AliLoader.h"
  34
  35   #include "TClonesArray.h"
  36 #endif
  37
  38 Int_t GoodTracksTOF(const Char_t *dir=".");
  39
  40 extern AliRun *gAlice;
  41 extern TBenchmark *gBenchmark;
  42 extern TROOT *gROOT;
  43
  44 static Int_t allgood=0;
  45 static Int_t allmatched=0;
  46 static Int_t allmismatched=0;
  47
  48 Int_t AliTOFComparison(const Char_t *dir=".") {
  49    gBenchmark->Start("AliTOFComparison");
  50
  51    ::Info("AliTOFComparison.C","Doing comparison...");
  52
  53
  54    Double_t pmin=0.2;
  55    Double_t pmax=3.0;
  56
  57    TH1F *hgood=(TH1F*)gROOT->FindObject("hgood");
  58    if (!hgood) hgood=new TH1F("hgood","Good tracks",30,pmin,pmax);
  59
  60    TH1F *hfound=(TH1F*)gROOT->FindObject("hfound");
  61    if (!hfound) hfound=new TH1F("hfound","Matched tracks",30,pmin,pmax);
  62
  63    TH1F *hfake=(TH1F*)gROOT->FindObject("hfake");
  64    if (!hfake) hfake=new TH1F("hfake","Mismatched tracks",30,pmin,pmax);
  65
  66    TH1F *hgp=(TH1F*)gROOT->FindObject("hgp");
  67    if (!hgp) hgp=new TH1F("hgp","",30,pmin,pmax);
  68    hgp->SetLineColor(4); hgp->SetLineWidth(2);
  69
  70    TH1F *hfp=(TH1F*)gROOT->FindObject("hfp");
  71    if (!hfp) hfp=new TH1F("hfp","Probability of mismatching",30,pmin,pmax);
  72    hfp->SetFillColor(1); hfp->SetFillStyle(3013); hfp->SetLineWidth(2);
  73
  74    TH1F *hgoo=(TH1F*)gROOT->FindObject("hgoo");
  75    if (!hgoo) hgoo=new TH1F("hgoo","Good tracks",30,-1,1);
  76
  77    TH1F *hfoun=(TH1F*)gROOT->FindObject("hfoun");
  78    if (!hfoun) hfoun=new TH1F("hfoun","Matched tracks",30,-1,1);
  79
  80    TH1F *hfak=(TH1F*)gROOT->FindObject("hfak");
  81    if (!hfak) hfak=new TH1F("hfak","Mismatched tracks",30,-1,1);
  82
  83    TH1F *hgl=(TH1F*)gROOT->FindObject("hgl");
  84    if (!hgl) hgl=new TH1F("hgl","",30,-1,1);
  85    hgl->SetLineColor(4); hgl->SetLineWidth(2);
  86
  87    TH1F *hfl=(TH1F*)gROOT->FindObject("hfl");
  88    if (!hfl) hfl=new TH1F("hfl","Probability of mismatching",30,-1,1);
  89    hfl->SetFillColor(1); hfl->SetFillStyle(3013); hfl->SetLineWidth(2);
  90
  91
  92
  93    Char_t fname[100];
  94    sprintf(fname,"%s/GoodTracksTOF.root",dir);
  95
  96    TFile *refFile=TFile::Open(fname,"old");
  97    if (!refFile || !refFile->IsOpen()) {
  98    ::Info("AliTOFComparison.C","Marking good tracks (will take a while)...");
  99      if (GoodTracksTOF(dir)) {
 100         ::Error("AliTOFComparison.C","Can't generate the reference file !");
 101         return 1;
 102      }
 103    }
 104    refFile=TFile::Open(fname,"old");
 105    if (!refFile || !refFile->IsOpen()) {
 106      ::Error("AliTOFComparison.C","Can't open the reference file !");
 107      return 1;
 108    }
 109
 110    TTree *tofTree=(TTree*)refFile->Get("tofTree");
 111    if (!tofTree) {
 112      ::Error("AliTOFComparison.C","Can't get the reference tree !");
 113      return 2;
 114    }
 115    TBranch *branch=tofTree->GetBranch("TOF");
 116    if (!branch) {
 117      ::Error("AliTOFComparison.C","Can't get the TOF branch !");
 118      return 3;
 119    }
 120    TClonesArray dummy("AliTrackReference",1000), *refs=&dummy;
 121    branch->SetAddress(&refs);
 122
 123
 124    if (gAlice) {
 125      delete gAlice->GetRunLoader();
 126      delete gAlice;//if everything was OK here it is already NULL
 127      gAlice = 0x0;
 128    }
 129    sprintf(fname,"%s/galice.root",dir);
 130    AliRunLoader *rl = AliRunLoader::Open(fname,"COMPARISON");
 131    if (rl == 0x0) {
 132       cerr<<"Can not open session"<<endl;
 133       return 1;
 134    }
 135    AliLoader* tofl = rl->GetLoader("TOFLoader");
 136    if (tofl == 0x0) {
 137       cerr<<"Can not get the TOF loader"<<endl;
 138       return 2;
 139    }
 140    tofl->LoadRecPoints("read");
 141
 142
 143    sprintf(fname,"%s/AliESDs.root",dir);
 144    TFile *ef=TFile::Open(fname);
 145    if ((!ef)||(!ef->IsOpen())) {
 146       ::Error("AliTOFComparison.C","Can't open AliESDs.root !");
 147       delete rl;
 148       return 4;
 149    }
 150    AliESD* event = new AliESD;
 151    TTree* esdTree = (TTree*) ef->Get("esdTree");
 152    if (!esdTree) {
 153       ::Error("AliTOFComparison.C", "no ESD tree found");
 154       return 5;
 155    }
 156    esdTree->SetBranchAddress("ESD", &event);
 157
 158
 159
 160    //******* Loop over events *********
 161    Int_t e=0;
 162    while (esdTree->GetEvent(e)) {
 163      cout<<endl<<endl<<"********* Processing event number: "<<e<<"*******\n";
 164
 165      rl->GetEvent(e);
 166
 167      TTree *clsTree=tofl->TreeR();
 168      if (!clsTree) {
 169         cerr<<"Can't get the TOF cluster tree !\n";
 170         return 3;
 171      }
 172      TBranch *branch=clsTree->GetBranch("TOF");
 173      if (!branch) {
 174         cerr<<"Can't get the branch with the TOF digits !\n";
 175         return 4;
 176      }
 177      TClonesArray dummy("AliTOFcluster",10000), *clusters=&dummy;
 178      branch->SetAddress(&clusters);
 179
 180      clsTree->GetEvent(0);
 181      Int_t nd=clusters->GetEntriesFast();
 182      cerr<<"Number of the TOF clusters: "<<nd<<endl;
 183
 184
 185
 186      Int_t ntrk=event->GetNumberOfTracks();
 187      cerr<<"Number of ESD tracks : "<<ntrk<<endl;
 188
 189
 190      if (tofTree->GetEvent(e++)==0) {
 191         cerr<<"No reconstructable tracks !\n";
 192         continue;
 193      }
 194
 195      Int_t ngood=refs->GetEntriesFast();
 196
 197      Int_t matched=0;
 198      Int_t mismatched=0;
 199      for (Int_t i=0; i<ngood; i++) {
 200         AliTrackReference *ref=(AliTrackReference*)refs->UncheckedAt(i);
 201         Int_t lab=ref->Label();
 202         Float_t ptg=TMath::Sqrt(ref->Px()*ref->Px() + ref->Py()*ref->Py());
 203
 204         Double_t tgl=ref->Pz()/ptg; //tan(lambda)
 205
 206          if (ptg>pmin) { hgood->Fill(ptg); hgoo->Fill(tgl); }
 207
 208          Int_t j;
 209          AliESDtrack *t=0;
 210          for (j=0; j<ntrk; j++) {
 211              AliESDtrack *tt=event->GetTrack(j);
 212              if (lab!=TMath::Abs(tt->GetLabel())) continue;
 213              t=tt;
 214              //if ((tt->GetStatus()&AliESDtrack::kTOFpid) == 0) continue;
 215              if (tt->GetTOFsignal() < 0) continue;
 216              UInt_t idx=tt->GetTOFcluster();
 217              if ((Int_t)idx>=nd) {
 218                cerr<<"Wrong cluster index ! "<<idx<<endl;
 219                return 5;
 220              }
 221              AliTOFcluster *cls=(AliTOFcluster*)clusters->UncheckedAt(idx);
 222              if (cls->GetLabel(0)!=lab)
 223                if (cls->GetLabel(1)!=lab)
 224                  if (cls->GetLabel(2)!=lab) {
 225                  mismatched++;
 226                  if (ptg>pmin) { hfake->Fill(ptg); hfak->Fill(tgl); }
 227                  break;
 228                }
 229              if (ptg>pmin) { hfound->Fill(ptg); hfoun->Fill(tgl); }
 230              matched++;
 231              break;
 232          }
 233          if (j==ntrk) {
 234             cerr<<"Not matched: "<<lab<<"   ";
 235             if (t) {
 236                cerr<<(t->GetStatus()&AliESDtrack::kITSout)<<' '
 237                    <<(t->GetStatus()&AliESDtrack::kTPCout)<<' '
 238                    <<(t->GetStatus()&AliESDtrack::kTRDout)<<' '
 239                    <<(t->GetStatus()&AliESDtrack::kTIME);
 240             } else cerr<<"No ESD track !";
 241             cerr<<endl;
 242          }
 243      }
 244      cout<<"Number of good tracks: "<<ngood<<endl;
 245      cout<<"Number of matched tracks: "<<matched<<endl;
 246      cout<<"Number of mismatched tracks: "<<mismatched<<endl;
 247
 248      allgood+=ngood; allmatched+=matched; allmismatched+=mismatched;
 249
 250      refs->Clear();
 251    } //***** End of the loop over events
 252
 253    delete event;
 254    ef->Close();
 255
 256    delete tofTree;
 257    refFile->Close();
 258
 259    if (allgood!=0) cerr<<"\n\nEfficiency: "<<Float_t(allmatched)/allgood<<endl;
 260    cout<<"Total number of good tracks: "<<allgood<<endl;
 261    cout<<"Total number of matched tracks: "<<allmatched<<endl;
 262    cout<<"Total number of mismatched tracks: "<<allmismatched<<endl;
 263
 264    TCanvas *c1=(TCanvas*)gROOT->FindObject("c1");
 265    if (!c1) {
 266       c1=new TCanvas("c1","",0,0,600,900);
 267       c1->Divide(1,2);
 268    }
 269    hfound->Sumw2(); hgood->Sumw2(); hfake->Sumw2();
 270    hgp->Divide(hfound,hgood,1,1.,"b");
 271    hfp->Divide(hfake,hgood,1,1.,"b");
 272    hgp->SetMaximum(1.4);
 273    hgp->SetYTitle("Matching efficiency");
 274    hgp->SetXTitle("Pt (GeV/c)");
 275
 276    hfoun->Sumw2(); hgoo->Sumw2(); hfak->Sumw2();
 277    hgl->Divide(hfoun,hgoo,1,1.,"b");
 278    hfl->Divide(hfak,hgoo,1,1.,"b");
 279    hgl->SetMaximum(1.4);
 280    hgl->SetYTitle("Matching efficiency");
 281    hgl->SetXTitle("Tan(lambda)");
 282
 283    c1->cd(1);
 284
 285    hgp->Draw();
 286    hfp->Draw("histsame");
 287    TLine *line1 = new TLine(pmin,1.0,pmax,1.0); line1->SetLineStyle(4);
 288    line1->Draw("same");
 289    TLine *line2 = new TLine(pmin,0.9,pmax,0.9); line2->SetLineStyle(4);
 290    line2->Draw("same");
 291
 292    c1->cd(2);
 293
 294    hgl->Draw();
 295    hfl->Draw("histsame");
 296    TLine *line3 = new TLine(-1,1.0,1,1.0); line3->SetLineStyle(4);
 297    line3->Draw("same");
 298    TLine *line4 = new TLine(-1,0.9,1,0.9); line4->SetLineStyle(4);
 299    line4->Draw("same");
 300
 301    c1->Update();
 302
 303    TFile fc("AliTOFComparison.root","RECREATE");
 304    c1->Write();
 305    fc.Close();
 306
 307    gBenchmark->Stop("AliTOFComparison");
 308    gBenchmark->Show("AliTOFComparison");
 309
 310    delete rl;
 311    return 0;
 312 }
 313
 314 Int_t GoodTracksTOF(const Char_t *dir) {
 315    if (gAlice) {
 316        delete gAlice->GetRunLoader();
 317        delete gAlice;//if everything was OK here it is already NULL
 318        gAlice = 0x0;
 319    }
 320
 321    Char_t fname[100];
 322    sprintf(fname,"%s/galice.root",dir);
 323
 324    AliRunLoader *rl = AliRunLoader::Open(fname,"COMPARISON");
 325    if (!rl) {
 326       ::Error("GoodTracksTOF","Can't start session !");
 327       return 1;
 328    }
 329
 330    rl->LoadgAlice();
 331    rl->LoadHeader();
 332    rl->LoadKinematics();
 333
 334
 335    AliLoader* tofl = rl->GetLoader("TOFLoader");
 336    if (tofl == 0x0) {
 337       ::Error("GoodTracksTOF","Can not get the TOF loader !");
 338       delete rl;
 339       return 2;
 340    }
 341    tofl->LoadRecPoints("read");
 342
 343    Int_t nev=rl->GetNumberOfEvents();
 344    ::Info("GoodTracksTOF","Number of events : %d\n",nev);
 345
 346    sprintf(fname,"%s/GoodTracksITS.root",dir);
 347    TFile *itsFile=TFile::Open(fname);
 348    if ((!itsFile)||(!itsFile->IsOpen())) {
 349        ::Error("GoodTracksTOF","Can't open the GoodTracksITS.root !");
 350        delete rl;
 351        return 5;
 352    }
 353    TClonesArray dum("AliTrackReference",1000), *itsRefs=&dum;
 354    TTree *itsTree=(TTree*)itsFile->Get("itsTree");
 355    if (!itsTree) {
 356        ::Error("GoodTracksTOF","Can't get the ITS reference tree !");
 357        delete rl;
 358        return 6;
 359    }
 360    TBranch *itsBranch=itsTree->GetBranch("ITS");
 361    if (!itsBranch) {
 362       ::Error("GoodTracksTOF","Can't get the ITS reference branch !");
 363       delete rl;
 364       return 7;
 365    }
 366    itsBranch->SetAddress(&itsRefs);
 367
 368
 369    sprintf(fname,"%s/GoodTracksTOF.root",dir);
 370    TFile *tofFile=TFile::Open(fname,"recreate");
 371    TClonesArray dummy("AliTrackReference",1000), *tofRefs=&dummy;
 372    TTree tofTree("tofTree","Tree with info about the reconstructable TOF tracks");
 373    tofTree.Branch("TOF",&tofRefs);
 374
 375
 376    //********  Loop over generated events
 377    for (Int_t e=0; e<nev; e++) {
 378
 379      rl->GetEvent(e); tofFile->cd();
 380
 381      Int_t np = rl->GetHeader()->GetNtrack();
 382      cout<<"Event "<<e<<" Number of particles: "<<np<<endl;
 383
 384      //******** Fill the "good" masks
 385      Int_t *good=new Int_t[np]; Int_t k; for (k=0; k<np; k++) good[k]=0;
 386
 387      TTree *cTree=tofl->TreeR();
 388      if (!cTree) {
 389         ::Error("GoodTracksTOF","Can't get the TOF cluster tree !");
 390         delete rl;
 391         return 8;
 392      }
 393      TBranch *branch=cTree->GetBranch("TOF");
 394      if (!branch) {
 395         ::Error("GoodTracksTOF","Can't get the branch with the TOF digits !");
 396         return 9;
 397      }
 398      TClonesArray dummy("AliTOFcluster",10000), *clusters=&dummy;
 399      branch->SetAddress(&clusters);
 400
 401      cTree->GetEvent(0);
 402      Int_t nd=clusters->GetEntriesFast();
 403
 404      for (Int_t i=0; i<nd; i++) {
 405        AliTOFcluster *c=(AliTOFcluster*)clusters->UncheckedAt(i);
 406        Int_t l0=c->GetLabel(0);
 407           if (l0>=np) {cerr<<"Wrong label: "<<l0<<endl; continue;}
 408        Int_t l1=c->GetLabel(1);
 409           if (l1>=np) {cerr<<"Wrong label: "<<l1<<endl; continue;}
 410        Int_t l2=c->GetLabel(2);
 411           if (l2>=np) {cerr<<"Wrong label: "<<l2<<endl; continue;}
 412        if (l0>=0) good[l0]++;
 413        if (l1>=0) good[l1]++;
 414        if (l2>=0) good[l2]++;
 415      }
 416      clusters->Clear();
 417
 418
 419      //****** select tracks which are "good" enough
 420      AliStack* stack = rl->Stack();
 421
 422      itsTree->GetEvent(e);
 423      Int_t nk=itsRefs->GetEntriesFast();
 424
 425      Int_t nt=0;
 426      for (k=0; k<nk; k++) {
 427         AliTrackReference *itsRef=(AliTrackReference *)itsRefs->UncheckedAt(k);
 428         Int_t lab=itsRef->Label();
 429         if (good[lab] == 0) continue;
 430         TParticle *p = (TParticle*)stack->Particle(lab);
 431         if (p == 0x0) {
 432            cerr<<"Can not get particle "<<lab<<endl;
 433            continue;
 434         }
 435
 436         if (TMath::Abs(p->Vx())>0.1) continue;
 437         if (TMath::Abs(p->Vy())>0.1) continue;
 438         //if (TMath::Abs(p->Vz())>0.1) continue;
 439
 440         new((*tofRefs)[nt]) AliTrackReference(*itsRef);
 441         nt++;
 442      }
 443      itsRefs->Clear();
 444
 445      tofTree.Fill();
 446      tofRefs->Clear();
 447
 448      delete[] good;
 449
 450    } //*** end of the loop over generated events
 451
 452    tofTree.Write();
 453    tofFile->Close();
 454
 455    delete itsTree;
 456    itsFile->Close();
 457
 458    delete rl;
 459    return 0;
 460 }