[u/mrichter/AliRoot.git] / ITS / UPGRADE / macros / AliITSUComparison.C

/****************************************************************************
 *          Legacy comparison macro, adapted to the upgraded ITS.           *
 *                                                                          *
 *               Creates list of "trackable" tracks,                        *
 *             calculates efficiency, resolutions etc.                      *
 *  The ESD tracks must be in an appropriate state (kITSin or kITSrefit)    *
 *                                                                          *
 * Before running, load the ITSU libraries:                                 *
 *  gSystem->Load("libITSUpgradeBase");gSystem->Load("libITSUpgradeRec");   *
 *                                                                          *
 *           Origin: I.Belikov, IPHC, Iouri.Belikov@iphc.cnrs.fr            *
 ****************************************************************************/

#if !defined(__CINT__) || defined(__MAKECINT__)
  #include <TMath.h>
  #include <TError.h>
  #include <Riostream.h>
  #include <TH1F.h>
  #include <TH2F.h>
  #include <TTree.h>
  #include <TParticle.h>
  #include <TCanvas.h>
  #include <TLine.h>
  #include <TText.h>
  #include <TBenchmark.h>
  #include <TStyle.h>
  #include <TFile.h>
  #include <TROOT.h>

  #include "AliStack.h"
  #include "AliHeader.h"
  #include "AliTrackReference.h"
  #include "AliRunLoader.h"
  #include "AliRun.h"
  #include "AliESDEvent.h"
  #include "AliESDtrack.h"

  #include "UPGRADE/AliITSUClusterPix.h"
  #include "UPGRADE/AliITSULoader.h"
#endif

Int_t GoodTracksITS(const Char_t *dir=".");

extern AliRun *gAlice;
extern TBenchmark *gBenchmark;
extern TROOT *gROOT;

static Int_t allgood=0;
static Int_t allselected=0;
static Int_t allfound=0;

Int_t AliITSUComparison
(Float_t ptcutl=0., Float_t ptcuth=2., const Char_t *dir=".") {
   gBenchmark->Start("AliITSUComparison");

   ::Info("AliITSUComparison.C","Doing comparison...");
   

   TH1F *hp=(TH1F*)gROOT->FindObject("hp");
   if (!hp) hp=new TH1F("hp","PHI resolution",50,-20.,20.); 
   hp->SetFillColor(4);

   TH1F *hl=(TH1F*)gROOT->FindObject("hl");
   if (!hl) hl=new TH1F("hl","LAMBDA resolution",50,-20,20);
   hl->SetFillColor(4);

   TH1F *hpt=(TH1F*)gROOT->FindObject("hpt");
   if (!hpt) hpt=new TH1F("hpt","Relative Pt resolution",30,-10.,10.); 
   hpt->SetFillColor(2);
 
   TH1F *hmpt=(TH1F*)gROOT->FindObject("hmpt");
   if (!hmpt) 
      hmpt=new TH1F("hmpt","Transverse impact parameter",30,-777,777); 
   hmpt->SetFillColor(6);

   TH1F *hz=(TH1F*)gROOT->FindObject("hz");
   if (!hz) hz=new TH1F("hz","Longitudinal impact parameter",30,-777,777); 


   Int_t nb=100;
   TH1F *hgood=(TH1F*)gROOT->FindObject("hgood");
   if (!hgood) hgood=new TH1F("hgood","Good tracks",nb,ptcutl,ptcuth);
    
   TH1F *hfound=(TH1F*)gROOT->FindObject("hfound");
   if (!hfound) hfound=new TH1F("hfound","Found tracks",nb,ptcutl,ptcuth);

   TH1F *hfake=(TH1F*)gROOT->FindObject("hfake");
   if (!hfake) hfake=new TH1F("hfake","Fake tracks",nb,ptcutl,ptcuth);

   TH1F *hg=(TH1F*)gROOT->FindObject("hg");
   if (!hg) hg=new TH1F("hg","Efficiency for good tracks",nb,ptcutl,ptcuth);
   hg->SetLineColor(4); hg->SetLineWidth(2);

   TH1F *hf=(TH1F*)gROOT->FindObject("hf");
   if (!hf) hf=new TH1F("hf","Efficiency for fake tracks",nb,ptcutl,ptcuth);
   hf->SetFillColor(1); hf->SetFillStyle(3013); hf->SetLineWidth(2);


   TH1F *he=(TH1F*)gROOT->FindObject("he");
   if (!he) 
      he =new TH1F("he","dE/dX for pions with 0.4<p<0.5 GeV/c",50,0.,200.);

   TH2F *hep=(TH2F*)gROOT->FindObject("hep");
   if (!hep) hep=new TH2F("hep","dE/dX vs momentum",50,0.,2.,50,0.,400.);
   hep->SetMarkerStyle(8);
   hep->SetMarkerSize(0.4);


   Char_t fname[100];
   sprintf(fname,"%s/GoodTracksITS.root",dir);

   TFile *refFile=TFile::Open(fname,"old");
   if (!refFile || !refFile->IsOpen()) {
   ::Info("AliITSUComparison.C","Marking good tracks (will take a while)...");
     if (GoodTracksITS(dir)) {
        ::Error("AliITSUComparison.C","Can't generate the reference file !");
        return 1;
     }
   }
   refFile=TFile::Open(fname,"old");
   if (!refFile || !refFile->IsOpen()) {
     ::Error("AliITSUComparison.C","Can't open the reference file !");
     return 1;
   }   
  
   TTree *itsTree=(TTree*)refFile->Get("itsTree");
   if (!itsTree) {
     ::Error("AliITSUComparison.C","Can't get the reference tree !");
     return 2;
   }
   TBranch *branch=itsTree->GetBranch("ITS");
   if (!branch) {
     ::Error("AliITSUComparison.C","Can't get the ITS branch !");
     return 3;
   }
   TClonesArray dummy("AliTrackReference",1000), *refs=&dummy;
   branch->SetAddress(&refs);


   sprintf(fname,"%s/AliESDs.root",dir);
   TFile *ef=TFile::Open(fname);
   if ((!ef)||(!ef->IsOpen())) {
      sprintf(fname,"%s/AliESDits.root",dir);
      ef=TFile::Open(fname);
      if ((!ef)||(!ef->IsOpen())) {
         ::Error("AliITSUComparison.C","Can't open AliESDits.root !");
         return 4;
      }
   }
   AliESDEvent* event = new AliESDEvent();
   TTree* esdTree = (TTree*) ef->Get("esdTree");
   if (!esdTree) {
      ::Error("AliITSComparison.C", "no ESD tree found");
      return 6;
   }
   event->ReadFromTree(esdTree);


   //******* Loop over events *********
   Int_t e=0;
   while (esdTree->GetEvent(e)) {
     cout<<endl<<endl<<"********* Processing event number: "<<e<<"*******\n";
 
     Int_t nentr=event->GetNumberOfTracks();
     allfound+=nentr;

     if (itsTree->GetEvent(e++)==0) {
        cerr<<"No reconstructable tracks !\n";
        continue;
     }

     Int_t ngood=refs->GetEntriesFast(); 
     allgood+=ngood;

     const Int_t MAX=15000;
     Int_t notf[MAX], nnotf=0;
     Int_t fake[MAX], nfake=0;
     Int_t mult[MAX], numb[MAX], nmult=0;
     Int_t k;
     for (k=0; k<ngood; k++) {
	AliTrackReference *ref=(AliTrackReference*)refs->UncheckedAt(k); 
        Int_t lab=ref->Label(), tlab=-1;
        Float_t ptg=TMath::Sqrt(ref->Px()*ref->Px() + ref->Py()*ref->Py());

        if (ptg<ptcutl) continue;
        if (ptg>ptcuth) continue;

        allselected++;

        hgood->Fill(ptg);

        AliESDtrack *esd=0;
        Int_t cnt=0;
        for (Int_t i=0; i<nentr; i++) {
           AliESDtrack *t=event->GetTrack(i);
	   UInt_t status=t->GetStatus();

           if ((status&AliESDtrack::kITSrefit)==0) continue;

           Int_t lbl=t->GetLabel();
           if (lab==TMath::Abs(lbl)) {
	      if (cnt==0) {esd=t; tlab=lbl;}
              if (lbl> 0) {esd=t; tlab=lbl;}  
              cnt++;
           }
        }
        if (cnt==0) {
           notf[nnotf++]=lab;
           continue;
        } else if (cnt>1){
           mult[nmult]=lab;
           numb[nmult]=cnt; nmult++;        
        }

        if (lab==tlab) hfound->Fill(ptg);
        else {
          fake[nfake++]=lab;
          hfake->Fill(ptg); 
        }

        Double_t alpha=esd->GetAlpha(),xv,par[5]; 
        esd->GetExternalParameters(xv,par);
        Float_t phi=TMath::ASin(par[2]) + alpha;
        if (phi<-TMath::Pi()) phi+=2*TMath::Pi();
        if (phi>=TMath::Pi()) phi-=2*TMath::Pi();
        Float_t lam=TMath::ATan(par[3]); 
        Float_t pt_1=TMath::Abs(par[4]);

        Float_t phig=TMath::ATan2(ref->Py(),ref->Px());
        hp->Fill((phi - phig)*1000.);

        Float_t lamg=TMath::ATan2(ref->Pz(),ptg);
        hl->Fill((lam - lamg)*1000.);

        Float_t d,z; esd->GetImpactParameters(d,z);
        hmpt->Fill(10000*d);
        hz->Fill(10000*z);

        hpt->Fill((pt_1 - 1/ptg)/(1/ptg)*100.);

        Float_t mom=(TMath::Abs(pt_1)>1e-5) ? 1./(pt_1*TMath::Cos(lam)) : 1e+5;
        Float_t dedx=esd->GetITSsignal();
        hep->Fill(mom,dedx,1.);

        Int_t pdg=(Int_t)ref->GetLength();  //this is particle's PDG !

        if (TMath::Abs(pdg)==211) //pions
           if (mom>0.4 && mom<0.5) he->Fill(dedx,1.);

     }

     cout<<"\nList of Not found tracks :\n";
     for (k=0; k<nnotf; k++){
       cout<<notf[k]<<"\t";
       if ((k%9)==8) cout<<"\n";
     }
     cout<<"\n\nList of fake  tracks :\n";
     for (k=0; k<nfake; k++){
       cout<<fake[k]<<"\t";
       if ((k%9)==8) cout<<"\n";
     }
     cout<<"\n\nList of multiple found tracks :\n";
     for (k=0; k<nmult; k++) {
         cout<<"id.   "<<mult[k]
             <<"     found - "<<numb[k]<<"times\n";
     }
     cout<<endl;

     cout<<"Number of found tracks : "<<nentr<<endl;
     cout<<"Number of \"good\" tracks : "<<ngood<<endl;

     refs->Clear();
   } //***** End of the loop over events

   delete event;
   delete esdTree;
   ef->Close();
   
   delete itsTree;
   refFile->Close();

   Stat_t ng=hgood->GetEntries(), nf=hfound->GetEntries();
   if (ng!=0) cout<<"\n\nIntegral efficiency is about "<<nf/ng*100.<<" %\n";
   cout<<"Total number selected of \"good\" tracks ="<<allselected<<endl<<endl;
   cout<<"Total number of found tracks ="<<allfound<<endl;
   cout<<"Total number of \"good\" tracks ="<<allgood<<endl;
   cout<<endl;

   gStyle->SetOptStat(111110);
   gStyle->SetOptFit(1);

   TCanvas *c1=new TCanvas("c1","",0,0,700,850);

   Int_t minc=33; 

   TPad *p1=new TPad("p1","",0,0.3,.5,.6); p1->Draw();
   p1->cd(); p1->SetFillColor(42); p1->SetFrameFillColor(10); 
   hp->SetFillColor(4);  hp->SetXTitle("(mrad)"); 
   if (hp->GetEntries()<minc) hp->Draw(); else hp->Fit("gaus"); c1->cd();

   TPad *p2=new TPad("p2","",0.5,.3,1,.6); p2->Draw(); 
   p2->cd(); p2->SetFillColor(42); p2->SetFrameFillColor(10);
   hl->SetXTitle("(mrad)");
   if (hl->GetEntries()<minc) hl->Draw(); else hl->Fit("gaus"); c1->cd();

   TPad *p3=new TPad("p3","",0,0,0.5,0.3); p3->Draw();
   p3->cd(); p3->SetFillColor(42); p3->SetFrameFillColor(10); 
   hpt->SetXTitle("(%)");
   if (hpt->GetEntries()<minc) hpt->Draw(); else hpt->Fit("gaus"); c1->cd();

   TPad *p4=new TPad("p4","",0.5,0,1,0.3); p4->Draw();
   p4->cd(); p4->SetFillColor(42); p4->SetFrameFillColor(10);
   hmpt->SetXTitle("(micron)");
   if (hmpt->GetEntries()<minc) hmpt->Draw(); else hmpt->Fit("gaus"); 
   hz->Draw("same"); c1->cd();
   

   TPad *p5=new TPad("p5","",0,0.6,1,1); p5->Draw(); p5->cd(); 
   p5->SetFillColor(41); p5->SetFrameFillColor(10);
   hfound->Sumw2(); hgood->Sumw2(); hfake->Sumw2();
   hg->Divide(hfound,hgood,1,1.,"b");
   hf->Divide(hfake,hgood,1,1.,"b");
   hg->SetMaximum(1.4);
   hg->SetYTitle("Tracking efficiency");
   hg->SetXTitle("Pt (GeV/c)");
   hg->Draw();

   TLine *line1 = new TLine(ptcutl,1.0,ptcuth,1.0); line1->SetLineStyle(4);
   line1->Draw("same");
   TLine *line2 = new TLine(ptcutl,0.9,ptcuth,0.9); line2->SetLineStyle(4);
   line2->Draw("same");

   hf->SetFillColor(1);
   hf->SetFillStyle(3013);
   hf->SetLineColor(2);
   hf->SetLineWidth(2);
   hf->Draw("histsame");
   TText *text = new TText(0.461176,0.248448,"Fake tracks");
   text->SetTextSize(0.05);
   text->Draw();
   text = new TText(0.453919,1.11408,"Good tracks");
   text->SetTextSize(0.05);
   text->Draw();

   TCanvas *c2=new TCanvas("c2","",320,32,530,590);
   TPad *p6=new TPad("p6","",0.,0.,1.,.5); p6->Draw();
   p6->cd(); p6->SetFillColor(42); p6->SetFrameFillColor(10); 
   he->SetFillColor(2); he->SetFillStyle(3005);  
   he->SetXTitle("Arbitrary Units"); 
   if (he->GetEntries()<minc) he->Draw(); else he->Fit("gaus"); c2->cd();

   TPad *p7=new TPad("p7","",0.,0.5,1.,1.); p7->Draw(); 
   p7->cd(); p7->SetFillColor(42); p7->SetFrameFillColor(10);
   hep->SetXTitle("p (Gev/c)"); hep->SetYTitle("dE/dX (Arb. Units)"); 
   hep->Draw(); c1->cd();

   TFile fc("AliITSUComparison.root","RECREATE");
   c1->Write();
   c2->Write();
   fc.Close();

   gBenchmark->Stop("AliITSUComparison");
   gBenchmark->Show("AliITSUComparison");

   return 0;
}


Int_t GoodTracksITS(const Char_t *dir) {
   if (gAlice) { 
       delete AliRunLoader::Instance();
       delete gAlice;//if everything was OK here it is already NULL
       gAlice = 0x0;
   }

   Char_t fname[100];
   sprintf(fname,"%s/galice.root",dir);

   AliRunLoader *rl = AliRunLoader::Open(fname,"COMPARISON");
   if (!rl) {
      ::Error("GoodTracksITS","Can't start session !");
      return 1;
   }

   rl->LoadgAlice();
   rl->LoadHeader();
   rl->LoadKinematics();

   AliITSULoader* itsl = (AliITSULoader*)rl->GetLoader("ITSLoader");
   if (itsl == 0x0) {
       ::Error("GoodTracksITS","Can not find the ITSLoader");
       delete rl;
       return 4;
   }
   itsl->LoadRecPoints();
  

   Int_t nev=rl->GetNumberOfEvents();
   ::Info("GoodTracksITS","Number of events : %d\n",nev);  

   sprintf(fname,"%s/GoodTracksTPC.root",dir);
   TFile *tpcFile=TFile::Open(fname);
   if ((!tpcFile)||(!tpcFile->IsOpen())) {
       ::Error("GoodTracksITS","Can't open the GoodTracksTPC.root !");
       delete rl;
       return 5; 
   }
   TClonesArray dum("AliTrackReference",1000), *tpcRefs=&dum;
   TTree *tpcTree=(TTree*)tpcFile->Get("tpcTree");
   if (!tpcTree) {
       ::Error("GoodTracksITS","Can't get the TPC reference tree !");
       delete rl;
       return 6;
   }
   TBranch *tpcBranch=tpcTree->GetBranch("TPC");
   if (!tpcBranch) {
      ::Error("GoodTracksITS","Can't get the TPC reference branch !");
      delete rl;
      return 7;
   }
   tpcBranch->SetAddress(&tpcRefs);

   sprintf(fname,"%s/GoodTracksITS.root",dir);
   TFile *itsFile=TFile::Open(fname,"recreate");
   TClonesArray dummy2("AliTrackReference",1000), *itsRefs=&dummy2;
   TTree itsTree("itsTree","Tree with info about the reconstructable ITS tracks");
   itsTree.Branch("ITS",&itsRefs);

   //********  Loop over generated events 
   for (Int_t e=0; e<nev; e++) {
     Int_t k;

     rl->GetEvent(e);  itsFile->cd();

     Int_t np = rl->GetHeader()->GetNtrack();
     cout<<"Event "<<e<<" Number of particles: "<<np<<endl;

     //******** Fill the "good" masks
     Int_t *good=new Int_t[np]; for (k=0; k<np; k++) good[k]=0;

     TTree *cTree=itsl->TreeR();
     if (!cTree) {
        ::Error("GoodTracksITS","Can't get the cluster tree !"); 
        delete rl;
        return 8;
     }

     const Int_t nLayers=7;
     TBranch *branch[nLayers];
     TClonesArray clusters[nLayers];
     for (Int_t layer=0; layer<nLayers; layer++) {
       TClonesArray *ptr = 
       new(clusters+layer) TClonesArray("AliITSUClusterPix",1000);
       Char_t bname[33];
       sprintf(bname,"ITSRecPoints%d\0",layer);
       branch[layer]=cTree->GetBranch(bname);
       if (!branch[layer]) {
          ::Error("GoodTracksITS","Can't get the clusters branch !"); 
          delete rl;
          return 9;
       }
       branch[layer]->SetAddress(&ptr);
     }

     Int_t entr=(Int_t)cTree->GetEntries();
     for (k=0; k<entr; k++) {
         cTree->GetEvent(k);
         for (Int_t lay=0; lay<nLayers; lay++) {
             Int_t ncl=clusters[lay].GetEntriesFast(); if (ncl==0) continue;
             while (ncl--) {
                AliITSUClusterPix *pnt=
                (AliITSUClusterPix*)clusters[lay].UncheckedAt(ncl);
                Int_t l0=pnt->GetLabel(0);
	        if (l0>=np) {
// 		   cerr<<"Wrong label: "<<l0<<endl;
		   continue;
	        }
                Int_t l1=pnt->GetLabel(1);
	        if (l1>=np) {
// 		   cerr<<"Wrong label: "<<l1<<endl;
		   continue;
	        }
                Int_t l2=pnt->GetLabel(2);
	        if (l2>=np) {
// 		   cerr<<"Wrong label: "<<l2<<endl;
		   continue;
	        }
                Int_t mask=1<<lay;
                if (l0>=0) good[l0]|=mask; 
                if (l1>=0) good[l1]|=mask; 
                if (l2>=0) good[l2]|=mask;
	     }
             clusters[lay].Clear();
	 }
     }


     //****** select tracks which are "good" enough
     AliStack* stack = rl->Stack();

     tpcTree->GetEvent(e);
     Int_t nk=tpcRefs->GetEntriesFast();
     Int_t nt=0;
     for (k=0; k<nk; k++) {
        AliTrackReference *tpcRef=(AliTrackReference *)tpcRefs->UncheckedAt(k);
        Int_t lab=tpcRef->Label();
        if (good[lab] != 0x7F) continue;
        TParticle *p = (TParticle*)stack->Particle(lab);
        if (p == 0x0) {
           cerr<<"Can not get particle "<<lab<<endl;
           continue;
        }

	AliTrackReference *ref=new((*itsRefs)[nt]) AliTrackReference(*tpcRef);
	ref->SetMomentum(p->Px(),p->Py(),p->Pz());
	ref->SetPosition(p->Vx(),p->Vy(),p->Vz());
        nt++;
     }
     tpcRefs->Clear();

     itsTree.Fill();
     itsRefs->Clear();

     delete[] good;

   } //*** end of the loop over generated events

   itsTree.Write();
   itsFile->Close();

   delete tpcTree;
   tpcFile->Close();

   delete rl;
   return 0;
}
Commit	Line	Data
e93062f1	1	/****************************************************************************
	2	* Legacy comparison macro, adapted to the upgraded ITS. *
	3	* *
	4	* Creates list of "trackable" tracks, *
	5	* calculates efficiency, resolutions etc. *
	6	* The ESD tracks must be in an appropriate state (kITSin or kITSrefit) *
	7	* *
	8	* Before running, load the ITSU libraries: *
	9	* gSystem->Load("libITSUpgradeBase");gSystem->Load("libITSUpgradeRec"); *
	10	* *
	11	* Origin: I.Belikov, IPHC, Iouri.Belikov@iphc.cnrs.fr *
	12	****************************************************************************/
	13
	14	#if !defined(__CINT__) \|\| defined(__MAKECINT__)
	15	#include <TMath.h>
	16	#include <TError.h>
	17	#include <Riostream.h>
	18	#include <TH1F.h>
	19	#include <TH2F.h>
	20	#include <TTree.h>
	21	#include <TParticle.h>
	22	#include <TCanvas.h>
	23	#include <TLine.h>
	24	#include <TText.h>
	25	#include <TBenchmark.h>
	26	#include <TStyle.h>
	27	#include <TFile.h>
	28	#include <TROOT.h>
	29
	30	#include "AliStack.h"
	31	#include "AliHeader.h"
	32	#include "AliTrackReference.h"
	33	#include "AliRunLoader.h"
	34	#include "AliRun.h"
	35	#include "AliESDEvent.h"
	36	#include "AliESDtrack.h"
	37
	38	#include "UPGRADE/AliITSUClusterPix.h"
	39	#include "UPGRADE/AliITSULoader.h"
	40	#endif
	41
	42	Int_t GoodTracksITS(const Char_t *dir=".");
	43
	44	extern AliRun *gAlice;
	45	extern TBenchmark *gBenchmark;
	46	extern TROOT *gROOT;
	47
	48	static Int_t allgood=0;
	49	static Int_t allselected=0;
	50	static Int_t allfound=0;
	51
	52	Int_t AliITSUComparison
36d042d4	53	(Float_t ptcutl=0., Float_t ptcuth=2., const Char_t *dir=".") {
e93062f1	54	gBenchmark->Start("AliITSUComparison");
	55
	56	::Info("AliITSUComparison.C","Doing comparison...");
	57
	58
	59	TH1F hp=(TH1F)gROOT->FindObject("hp");
	60	if (!hp) hp=new TH1F("hp","PHI resolution",50,-20.,20.);
	61	hp->SetFillColor(4);
	62
	63	TH1F hl=(TH1F)gROOT->FindObject("hl");
	64	if (!hl) hl=new TH1F("hl","LAMBDA resolution",50,-20,20);
	65	hl->SetFillColor(4);
	66
	67	TH1F hpt=(TH1F)gROOT->FindObject("hpt");
	68	if (!hpt) hpt=new TH1F("hpt","Relative Pt resolution",30,-10.,10.);
	69	hpt->SetFillColor(2);
	70
	71	TH1F hmpt=(TH1F)gROOT->FindObject("hmpt");
	72	if (!hmpt)
	73	hmpt=new TH1F("hmpt","Transverse impact parameter",30,-777,777);
	74	hmpt->SetFillColor(6);
	75
	76	TH1F hz=(TH1F)gROOT->FindObject("hz");
	77	if (!hz) hz=new TH1F("hz","Longitudinal impact parameter",30,-777,777);
	78
	79
36d042d4	80	Int_t nb=100;
e93062f1	81	TH1F hgood=(TH1F)gROOT->FindObject("hgood");
36d042d4	82	if (!hgood) hgood=new TH1F("hgood","Good tracks",nb,ptcutl,ptcuth);
e93062f1	83
e93062f1	84	TH1F hfound=(TH1F)gROOT->FindObject("hfound");
36d042d4	85	if (!hfound) hfound=new TH1F("hfound","Found tracks",nb,ptcutl,ptcuth);
e93062f1	86
e93062f1	87	TH1F hfake=(TH1F)gROOT->FindObject("hfake");
36d042d4	88	if (!hfake) hfake=new TH1F("hfake","Fake tracks",nb,ptcutl,ptcuth);
e93062f1	89
e93062f1	90	TH1F hg=(TH1F)gROOT->FindObject("hg");
36d042d4	91	if (!hg) hg=new TH1F("hg","Efficiency for good tracks",nb,ptcutl,ptcuth);
e93062f1	92	hg->SetLineColor(4); hg->SetLineWidth(2);
	93
	94	TH1F hf=(TH1F)gROOT->FindObject("hf");
36d042d4	95	if (!hf) hf=new TH1F("hf","Efficiency for fake tracks",nb,ptcutl,ptcuth);
e93062f1	96	hf->SetFillColor(1); hf->SetFillStyle(3013); hf->SetLineWidth(2);
e93062f1	97
36d042d4	98
e93062f1	99	TH1F he=(TH1F)gROOT->FindObject("he");
	100	if (!he)
	101	he =new TH1F("he","dE/dX for pions with 0.4<p<0.5 GeV/c",50,0.,200.);
	102
	103	TH2F hep=(TH2F)gROOT->FindObject("hep");
	104	if (!hep) hep=new TH2F("hep","dE/dX vs momentum",50,0.,2.,50,0.,400.);
	105	hep->SetMarkerStyle(8);
	106	hep->SetMarkerSize(0.4);
	107
	108
	109	Char_t fname[100];
	110	sprintf(fname,"%s/GoodTracksITS.root",dir);
	111
	112	TFile *refFile=TFile::Open(fname,"old");
	113	if (!refFile \|\| !refFile->IsOpen()) {
	114	::Info("AliITSUComparison.C","Marking good tracks (will take a while)...");
	115	if (GoodTracksITS(dir)) {
	116	::Error("AliITSUComparison.C","Can't generate the reference file !");
	117	return 1;
	118	}
	119	}
	120	refFile=TFile::Open(fname,"old");
	121	if (!refFile \|\| !refFile->IsOpen()) {
	122	::Error("AliITSUComparison.C","Can't open the reference file !");
	123	return 1;
	124	}
	125
	126	TTree itsTree=(TTree)refFile->Get("itsTree");
	127	if (!itsTree) {
	128	::Error("AliITSUComparison.C","Can't get the reference tree !");
	129	return 2;
	130	}
	131	TBranch *branch=itsTree->GetBranch("ITS");
	132	if (!branch) {
	133	::Error("AliITSUComparison.C","Can't get the ITS branch !");
	134	return 3;
	135	}
	136	TClonesArray dummy("AliTrackReference",1000), *refs=&dummy;
	137	branch->SetAddress(&refs);
	138
	139
	140	sprintf(fname,"%s/AliESDs.root",dir);
	141	TFile *ef=TFile::Open(fname);
	142	if ((!ef)\|\|(!ef->IsOpen())) {
	143	sprintf(fname,"%s/AliESDits.root",dir);
	144	ef=TFile::Open(fname);
	145	if ((!ef)\|\|(!ef->IsOpen())) {
	146	::Error("AliITSUComparison.C","Can't open AliESDits.root !");
	147	return 4;
	148	}
	149	}
	150	AliESDEvent* event = new AliESDEvent();
	151	TTree* esdTree = (TTree*) ef->Get("esdTree");
	152	if (!esdTree) {
	153	::Error("AliITSComparison.C", "no ESD tree found");
	154	return 6;
	155	}
	156	event->ReadFromTree(esdTree);
	157
	158
	159	//***** Loop over events *******
	160	Int_t e=0;
	161	while (esdTree->GetEvent(e)) {
	162	cout<<endl<<endl<<"******* Processing event number: "<<e<<"*****\n";
163
164	Int_t nentr=event->GetNumberOfTracks();
165	allfound+=nentr;
166
167	if (itsTree->GetEvent(e++)==0) {
168	cerr<<"No reconstructable tracks !\n";
169	continue;
170	}
171
172	Int_t ngood=refs->GetEntriesFast();
173	allgood+=ngood;
174
175	const Int_t MAX=15000;
176	Int_t notf[MAX], nnotf=0;
177	Int_t fake[MAX], nfake=0;
178	Int_t mult[MAX], numb[MAX], nmult=0;
179	Int_t k;
180	for (k=0; k<ngood; k++) {
181	AliTrackReference ref=(AliTrackReference)refs->UncheckedAt(k);
182	Int_t lab=ref->Label(), tlab=-1;
183	Float_t ptg=TMath::Sqrt(ref->Px()ref->Px() + ref->Py()ref->Py());
184
185	if (ptg<ptcutl) continue;
186	if (ptg>ptcuth) continue;
187
188	allselected++;
189
190	hgood->Fill(ptg);
191
192	AliESDtrack *esd=0;
193	Int_t cnt=0;
194	for (Int_t i=0; i<nentr; i++) {
195	AliESDtrack *t=event->GetTrack(i);
196	UInt_t status=t->GetStatus();
197
198	if ((status&AliESDtrack::kITSrefit)==0) continue;
199
200	Int_t lbl=t->GetLabel();
201	if (lab==TMath::Abs(lbl)) {
202	if (cnt==0) {esd=t; tlab=lbl;}
6803fc6f	203	if (lbl> 0) {esd=t; tlab=lbl;}
e93062f1	204	cnt++;
	205	}
	206	}
	207	if (cnt==0) {
	208	notf[nnotf++]=lab;
	209	continue;
	210	} else if (cnt>1){
	211	mult[nmult]=lab;
	212	numb[nmult]=cnt; nmult++;
	213	}
	214
	215	if (lab==tlab) hfound->Fill(ptg);
	216	else {
	217	fake[nfake++]=lab;
	218	hfake->Fill(ptg);
	219	}
	220
	221	Double_t alpha=esd->GetAlpha(),xv,par[5];
	222	esd->GetExternalParameters(xv,par);
	223	Float_t phi=TMath::ASin(par[2]) + alpha;
	224	if (phi<-TMath::Pi()) phi+=2*TMath::Pi();
	225	if (phi>=TMath::Pi()) phi-=2*TMath::Pi();
	226	Float_t lam=TMath::ATan(par[3]);
	227	Float_t pt_1=TMath::Abs(par[4]);
	228
	229	Float_t phig=TMath::ATan2(ref->Py(),ref->Px());
	230	hp->Fill((phi - phig)*1000.);
	231
	232	Float_t lamg=TMath::ATan2(ref->Pz(),ptg);
	233	hl->Fill((lam - lamg)*1000.);
	234
	235	Float_t d,z; esd->GetImpactParameters(d,z);
	236	hmpt->Fill(10000*d);
	237	hz->Fill(10000*z);
	238
	239	hpt->Fill((pt_1 - 1/ptg)/(1/ptg)*100.);
	240
f29c5339	241	Float_t mom=(TMath::Abs(pt_1)>1e-5) ? 1./(pt_1*TMath::Cos(lam)) : 1e+5;
e93062f1	242	Float_t dedx=esd->GetITSsignal();
	243	hep->Fill(mom,dedx,1.);
	244
	245	Int_t pdg=(Int_t)ref->GetLength(); //this is particle's PDG !
	246
	247	if (TMath::Abs(pdg)==211) //pions
	248	if (mom>0.4 && mom<0.5) he->Fill(dedx,1.);
	249
	250	}
	251
	252	cout<<"\nList of Not found tracks :\n";
	253	for (k=0; k<nnotf; k++){
	254	cout<<notf[k]<<"\t";
	255	if ((k%9)==8) cout<<"\n";
	256	}
	257	cout<<"\n\nList of fake tracks :\n";
	258	for (k=0; k<nfake; k++){
	259	cout<<fake[k]<<"\t";
	260	if ((k%9)==8) cout<<"\n";
	261	}
	262	cout<<"\n\nList of multiple found tracks :\n";
	263	for (k=0; k<nmult; k++) {
	264	cout<<"id. "<<mult[k]
	265	<<" found - "<<numb[k]<<"times\n";
	266	}
	267	cout<<endl;
	268
	269	cout<<"Number of found tracks : "<<nentr<<endl;
	270	cout<<"Number of \"good\" tracks : "<<ngood<<endl;
	271
	272	refs->Clear();
	273	} //***** End of the loop over events
	274
	275	delete event;
	276	delete esdTree;
	277	ef->Close();
	278
	279	delete itsTree;
	280	refFile->Close();
	281
	282	Stat_t ng=hgood->GetEntries(), nf=hfound->GetEntries();
	283	if (ng!=0) cout<<"\n\nIntegral efficiency is about "<<nf/ng*100.<<" %\n";
	284	cout<<"Total number selected of \"good\" tracks ="<<allselected<<endl<<endl;
	285	cout<<"Total number of found tracks ="<<allfound<<endl;
	286	cout<<"Total number of \"good\" tracks ="<<allgood<<endl;
	287	cout<<endl;
	288
	289	gStyle->SetOptStat(111110);
	290	gStyle->SetOptFit(1);
	291
	292	TCanvas *c1=new TCanvas("c1","",0,0,700,850);
	293
	294	Int_t minc=33;
	295
	296	TPad *p1=new TPad("p1","",0,0.3,.5,.6); p1->Draw();
	297	p1->cd(); p1->SetFillColor(42); p1->SetFrameFillColor(10);
	298	hp->SetFillColor(4); hp->SetXTitle("(mrad)");
	299	if (hp->GetEntries()<minc) hp->Draw(); else hp->Fit("gaus"); c1->cd();
	300
	301	TPad *p2=new TPad("p2","",0.5,.3,1,.6); p2->Draw();
	302	p2->cd(); p2->SetFillColor(42); p2->SetFrameFillColor(10);
	303	hl->SetXTitle("(mrad)");
	304	if (hl->GetEntries()<minc) hl->Draw(); else hl->Fit("gaus"); c1->cd();
	305
306	TPad *p3=new TPad("p3","",0,0,0.5,0.3); p3->Draw();
307	p3->cd(); p3->SetFillColor(42); p3->SetFrameFillColor(10);
308	hpt->SetXTitle("(%)");
309	if (hpt->GetEntries()<minc) hpt->Draw(); else hpt->Fit("gaus"); c1->cd();
310
311	TPad *p4=new TPad("p4","",0.5,0,1,0.3); p4->Draw();
312	p4->cd(); p4->SetFillColor(42); p4->SetFrameFillColor(10);
313	hmpt->SetXTitle("(micron)");
314	if (hmpt->GetEntries()<minc) hmpt->Draw(); else hmpt->Fit("gaus");
315	hz->Draw("same"); c1->cd();
316
317
318	TPad *p5=new TPad("p5","",0,0.6,1,1); p5->Draw(); p5->cd();
319	p5->SetFillColor(41); p5->SetFrameFillColor(10);
320	hfound->Sumw2(); hgood->Sumw2(); hfake->Sumw2();
321	hg->Divide(hfound,hgood,1,1.,"b");
322	hf->Divide(hfake,hgood,1,1.,"b");
323	hg->SetMaximum(1.4);
324	hg->SetYTitle("Tracking efficiency");
325	hg->SetXTitle("Pt (GeV/c)");
326	hg->Draw();
327
36d042d4	328	TLine *line1 = new TLine(ptcutl,1.0,ptcuth,1.0); line1->SetLineStyle(4);
e93062f1	329	line1->Draw("same");
36d042d4	330	TLine *line2 = new TLine(ptcutl,0.9,ptcuth,0.9); line2->SetLineStyle(4);
e93062f1	331	line2->Draw("same");
	332
	333	hf->SetFillColor(1);
	334	hf->SetFillStyle(3013);
	335	hf->SetLineColor(2);
	336	hf->SetLineWidth(2);
	337	hf->Draw("histsame");
	338	TText *text = new TText(0.461176,0.248448,"Fake tracks");
	339	text->SetTextSize(0.05);
	340	text->Draw();
	341	text = new TText(0.453919,1.11408,"Good tracks");
	342	text->SetTextSize(0.05);
	343	text->Draw();
	344
	345	TCanvas *c2=new TCanvas("c2","",320,32,530,590);
	346	TPad *p6=new TPad("p6","",0.,0.,1.,.5); p6->Draw();
	347	p6->cd(); p6->SetFillColor(42); p6->SetFrameFillColor(10);
	348	he->SetFillColor(2); he->SetFillStyle(3005);
	349	he->SetXTitle("Arbitrary Units");
	350	if (he->GetEntries()<minc) he->Draw(); else he->Fit("gaus"); c2->cd();
	351
	352	TPad *p7=new TPad("p7","",0.,0.5,1.,1.); p7->Draw();
	353	p7->cd(); p7->SetFillColor(42); p7->SetFrameFillColor(10);
	354	hep->SetXTitle("p (Gev/c)"); hep->SetYTitle("dE/dX (Arb. Units)");
	355	hep->Draw(); c1->cd();
	356
	357	TFile fc("AliITSUComparison.root","RECREATE");
	358	c1->Write();
	359	c2->Write();
	360	fc.Close();
	361
	362	gBenchmark->Stop("AliITSUComparison");
	363	gBenchmark->Show("AliITSUComparison");
	364
	365	return 0;
	366	}
	367
	368
	369
	370	Int_t GoodTracksITS(const Char_t *dir) {
	371	if (gAlice) {
	372	delete AliRunLoader::Instance();
	373	delete gAlice;//if everything was OK here it is already NULL
	374	gAlice = 0x0;
	375	}
	376
	377	Char_t fname[100];
	378	sprintf(fname,"%s/galice.root",dir);
	379
	380	AliRunLoader *rl = AliRunLoader::Open(fname,"COMPARISON");
	381	if (!rl) {
	382	::Error("GoodTracksITS","Can't start session !");
	383	return 1;
	384	}
	385
	386	rl->LoadgAlice();
	387	rl->LoadHeader();
	388	rl->LoadKinematics();
	389
	390	AliITSULoader* itsl = (AliITSULoader*)rl->GetLoader("ITSLoader");
	391	if (itsl == 0x0) {
	392	::Error("GoodTracksITS","Can not find the ITSLoader");
	393	delete rl;
	394	return 4;
395	}
396	itsl->LoadRecPoints();
397
398
399	Int_t nev=rl->GetNumberOfEvents();
400	::Info("GoodTracksITS","Number of events : %d\n",nev);
401
402	sprintf(fname,"%s/GoodTracksTPC.root",dir);
403	TFile *tpcFile=TFile::Open(fname);
404	if ((!tpcFile)\|\|(!tpcFile->IsOpen())) {
405	::Error("GoodTracksITS","Can't open the GoodTracksTPC.root !");
406	delete rl;
407	return 5;
408	}
409	TClonesArray dum("AliTrackReference",1000), *tpcRefs=&dum;
410	TTree tpcTree=(TTree)tpcFile->Get("tpcTree");
411	if (!tpcTree) {
412	::Error("GoodTracksITS","Can't get the TPC reference tree !");
413	delete rl;
414	return 6;
415	}
416	TBranch *tpcBranch=tpcTree->GetBranch("TPC");
417	if (!tpcBranch) {
418	::Error("GoodTracksITS","Can't get the TPC reference branch !");
419	delete rl;
420	return 7;
421	}
422	tpcBranch->SetAddress(&tpcRefs);
423
424	sprintf(fname,"%s/GoodTracksITS.root",dir);
425	TFile *itsFile=TFile::Open(fname,"recreate");
426	TClonesArray dummy2("AliTrackReference",1000), *itsRefs=&dummy2;
427	TTree itsTree("itsTree","Tree with info about the reconstructable ITS tracks");
428	itsTree.Branch("ITS",&itsRefs);
429
430	//******** Loop over generated events
431	for (Int_t e=0; e<nev; e++) {
432	Int_t k;
433
434	rl->GetEvent(e); itsFile->cd();
435
436	Int_t np = rl->GetHeader()->GetNtrack();
437	cout<<"Event "<<e<<" Number of particles: "<<np<<endl;
438
439	//******** Fill the "good" masks
440	Int_t *good=new Int_t[np]; for (k=0; k<np; k++) good[k]=0;
441
442	TTree *cTree=itsl->TreeR();
443	if (!cTree) {
444	::Error("GoodTracksITS","Can't get the cluster tree !");
445	delete rl;
446	return 8;
447	}
448
449	const Int_t nLayers=7;
450	TBranch *branch[nLayers];
451	TClonesArray clusters[nLayers];
452	for (Int_t layer=0; layer<nLayers; layer++) {
453	TClonesArray *ptr =
454	new(clusters+layer) TClonesArray("AliITSUClusterPix",1000);
455	Char_t bname[33];
456	sprintf(bname,"ITSRecPoints%d\0",layer);
457	branch[layer]=cTree->GetBranch(bname);
458	if (!branch[layer]) {
459	::Error("GoodTracksITS","Can't get the clusters branch !");
460	delete rl;
461	return 9;
462	}
463	branch[layer]->SetAddress(&ptr);
464	}
465
466	Int_t entr=(Int_t)cTree->GetEntries();
467	for (k=0; k<entr; k++) {
468	cTree->GetEvent(k);
469	for (Int_t lay=0; lay<nLayers; lay++) {
470	Int_t ncl=clusters[lay].GetEntriesFast(); if (ncl==0) continue;
471	while (ncl--) {
472	AliITSUClusterPix *pnt=
473	(AliITSUClusterPix*)clusters[lay].UncheckedAt(ncl);
474	Int_t l0=pnt->GetLabel(0);
475	if (l0>=np) {
476	// cerr<<"Wrong label: "<<l0<<endl;
477	continue;
478	}
479	Int_t l1=pnt->GetLabel(1);
480	if (l1>=np) {
481	// cerr<<"Wrong label: "<<l1<<endl;
482	continue;
483	}
484	Int_t l2=pnt->GetLabel(2);
485	if (l2>=np) {
486	// cerr<<"Wrong label: "<<l2<<endl;
487	continue;
488	}
489	Int_t mask=1<<lay;
490	if (l0>=0) good[l0]\|=mask;
491	if (l1>=0) good[l1]\|=mask;
492	if (l2>=0) good[l2]\|=mask;
493	}
494	clusters[lay].Clear();
495	}
496	}
497
498
499
500	//****** select tracks which are "good" enough
501	AliStack* stack = rl->Stack();
502
503	tpcTree->GetEvent(e);
504	Int_t nk=tpcRefs->GetEntriesFast();
505	Int_t nt=0;
506	for (k=0; k<nk; k++) {
507	AliTrackReference tpcRef=(AliTrackReference )tpcRefs->UncheckedAt(k);
508	Int_t lab=tpcRef->Label();
509	if (good[lab] != 0x7F) continue;
510	TParticle p = (TParticle)stack->Particle(lab);
511	if (p == 0x0) {
512	cerr<<"Can not get particle "<<lab<<endl;
513	continue;
514	}
515
516	AliTrackReference ref=new((itsRefs)[nt]) AliTrackReference(*tpcRef);
517	ref->SetMomentum(p->Px(),p->Py(),p->Pz());
518	ref->SetPosition(p->Vx(),p->Vy(),p->Vz());
519	nt++;
520	}
521	tpcRefs->Clear();
522
523	itsTree.Fill();
524	itsRefs->Clear();
525
526	delete[] good;
527
528	} //*** end of the loop over generated events
529
530	itsTree.Write();
531	itsFile->Close();
532
533	delete tpcTree;
534	tpcFile->Close();
535
536	delete rl;
537	return 0;
538	}
539
540