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

/****************************************************************************
 *          A standalone comparison macro for the upgraded ITS.             *
 *                                                                          *
 *               Creates list of "trackable" tracks,                        *
 *             calculates efficiency, resolutions etc.                      *
 *  The ESD tracks must be in an appropriate state: kITSrefit               *
 *                                                                          *
 *          The efficiency and resolutions are calculated                   * 
 *   wrt "primary-like" pions within the acceptance tan(lambda)~[-1,1]      *
 *        and for tracks having all 7 clusters correctly assigned.          *
 *                                                                          *
 * 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 "AliGenEventHeader.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 GoodTracksCooked(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;

void root(TH1 *h) {
  Int_t nb=h->GetNbinsX();
  for (Int_t i=0; i<nb; i++) {
    Float_t c=h->GetBinContent(i);
    c=TMath::Sqrt(c);
    h->SetBinContent(i,c);

    Float_t e=h->GetBinError(i);
    if (c!=0) e = 0.5*e/c;
    h->SetBinError(i,e);
  }
}
void divide(TH1 *h) {
  Int_t nb=h->GetNbinsX();
  for (Int_t i=0; i<nb; i++) {
    Float_t c=h->GetBinContent(i);
    c *= h->GetBinCenter(i);
    h->SetBinContent(i,c);

    Float_t e=h->GetBinError(i);
    e *= h->GetBinCenter(i);
    h->SetBinError(i,e);
  }
}

Int_t AliITSUComparisonCooked
(Float_t ptcutl=0.01, Float_t ptcuth=10., const Char_t *dir=".") {
   gBenchmark->Start("AliITSUComparisonCooked");

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


   Int_t nb=100;
   Float_t xbins[nb+1];
   Double_t a=TMath::Log(ptcuth/ptcutl)/nb;
   for (Int_t i=0; i<=nb; i++) xbins[i] = ptcutl*TMath::Exp(i*a);

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

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

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

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

   TH1F *hpt=(TH1F*)gROOT->FindObject("hpt");
   if (!hpt) hpt=new TH1F("hpt","Relative Pt resolution",nb,xbins); 
   hpt->Sumw2();
   TH1F *hd=(TH1F*)gROOT->FindObject("hd");
   if (!hd) 
      hd=new TH1F("hd","Transverse impact parameter",nb,xbins); 
   hd->Sumw2();


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

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

        Int_t pdg=(Int_t)ref->GetLength();  //this is particle's PDG !
        if (TMath::Abs(pdg)!=211) continue; //select pions only

        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;
           if (t->GetITSclusters(0)<4) 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); 
        }

        if (esd->GetLabel()<0) continue; //resolutions for good tracks only

        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);
        d*=10000; //microns
        Float_t w=d*d;
        hd->Fill(ptg, w);
        //z*=10000; //microns
        //hz->Fill(z);

        w=(pt_1 - 1/ptg)*100 * (pt_1-1/ptg)*100;
        hpt->Fill(ptg, w);

     }

     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->SetLogx(); p3->SetGridx(); p3->SetGridy();
   p3->Draw();
   p3->cd(); p3->SetFillColor(42); p3->SetFrameFillColor(10); 
   hpt->SetXTitle("p_{T} (GeV/c)");
   hpt->SetYTitle("(%)");
   TH1F *hh=new TH1F(*hfound);
   //hh->Add(hfake);
   hpt->Divide(hh);
   root(hpt);
   divide(hpt);
   hpt->Draw(); c1->cd();

   TPad *p4=new TPad("p4","",0.5,0,1,0.3); 
   p4->SetLogx(); p4->SetGridx(); p4->SetGridy();
   p4->Draw();
   p4->cd(); p4->SetFillColor(42); p4->SetFrameFillColor(10);
   hd->SetXTitle("p_{T} (GeV/c)");
   hd->SetYTitle("(micron)");
   hd->Divide(hh);
   root(hd);
   hd->Draw(); c1->cd();

   //hz->Draw("same"); c1->cd();
   

   TPad *p5=new TPad("p5","",0,0.6,1,1); 
   p5->SetLogx(); p5->SetGridx(); p5->SetGridy(); 
   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->SetYTitle("Tracking efficiency (%)");
   hg->SetXTitle("p_{T} (GeV/c)");
   hg->Scale(100);
   hg->Draw();

   hf->SetFillColor(1);
   hf->SetFillStyle(3013);
   hf->SetLineColor(2);
   hf->SetLineWidth(2);
   hf->Scale(100);
   hf->Draw("histsame");
   TText *text = new TText(0.4, 20., "Fake tracks");
   text->SetTextSize(0.05);
   text->Draw();
   text = new TText(0.4, 80., "Good tracks");
   text->SetTextSize(0.05);
   text->Draw();

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

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

   return 0;
}


Int_t GoodTracksCooked(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("GoodTracksCooked","Can't start session !");
      return 1;
   }

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

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

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

   sprintf(fname,"%s/GoodTracksCooked.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;

     AliGenEventHeader *h=rl->GetHeader()->GenEventHeader();
     TArrayF vtx(3);
     h->PrimaryVertex(vtx);
 
     //******** 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("GoodTracksCooked","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("GoodTracksCooked","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();
     Int_t nt=0;
     for (k=0; k<np; k++) {
        if (good[k] != 0x7F) continue;

        TParticle *p = (TParticle*)stack->Particle(k);
        if (p == 0x0) {
           cerr<<"Can not get particle "<<k<<endl;
           continue;
        }

        if (p->Pt() <= 0.) continue;
        if (TMath::Abs(p->Pz()/p->Pt())>0.999) continue;

        Double_t dx=p->Vx()-vtx[0], dy=p->Vy()-vtx[1], dz=p->Vz()-vtx[2];
        if (TMath::Sqrt(dx*dx+dy*dy)>0.0001) continue; //Primary-like
        if (TMath::Abs(dz) > 0.0001) continue;

	AliTrackReference *ref=new((*itsRefs)[nt]) AliTrackReference();
        ref->SetLabel(k);
        Int_t pdg=p->GetPdgCode();
        ref->SetLength(pdg);  //This will the particle's PDG !
	ref->SetMomentum(p->Px(),p->Py(),p->Pz());
	ref->SetPosition(p->Vx(),p->Vy(),p->Vz());
        nt++;
     }

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

     delete[] good;

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

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

   delete rl;
   return 0;
}
Commit	Line	Data
3f6ade4c	1	/****************************************************************************
	2	* A standalone comparison macro for 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: kITSrefit *
	7	* *
	8	* The efficiency and resolutions are calculated *
	9	* wrt "primary-like" pions within the acceptance tan(lambda)~[-1,1] *
	10	* and for tracks having all 7 clusters correctly assigned. *
	11	* *
	12	* Before running, load the ITSU libraries: *
	13	* gSystem->Load("libITSUpgradeBase");gSystem->Load("libITSUpgradeRec"); *
	14	* *
	15	* Origin: I.Belikov, IPHC, Iouri.Belikov@iphc.cnrs.fr *
	16	****************************************************************************/
	17
	18	#if !defined(__CINT__) \|\| defined(__MAKECINT__)
	19	#include <TMath.h>
	20	#include <TError.h>
	21	#include <Riostream.h>
	22	#include <TH1F.h>
	23	#include <TH2F.h>
	24	#include <TTree.h>
	25	#include <TParticle.h>
	26	#include <TCanvas.h>
	27	#include <TLine.h>
	28	#include <TText.h>
	29	#include <TBenchmark.h>
	30	#include <TStyle.h>
	31	#include <TFile.h>
	32	#include <TROOT.h>
	33
	34	#include "AliStack.h"
	35	#include "AliHeader.h"
	36	#include "AliGenEventHeader.h"
	37	#include "AliTrackReference.h"
	38	#include "AliRunLoader.h"
	39	#include "AliRun.h"
	40	#include "AliESDEvent.h"
	41	#include "AliESDtrack.h"
	42
	43	#include "UPGRADE/AliITSUClusterPix.h"
	44	#include "UPGRADE/AliITSULoader.h"
	45	#endif
	46
	47	Int_t GoodTracksCooked(const Char_t *dir=".");
	48
	49	extern AliRun *gAlice;
	50	extern TBenchmark *gBenchmark;
	51	extern TROOT *gROOT;
	52
	53	static Int_t allgood=0;
	54	static Int_t allselected=0;
	55	static Int_t allfound=0;
	56
	57	void root(TH1 *h) {
	58	Int_t nb=h->GetNbinsX();
	59	for (Int_t i=0; i<nb; i++) {
	60	Float_t c=h->GetBinContent(i);
	61	c=TMath::Sqrt(c);
	62	h->SetBinContent(i,c);
	63
	64	Float_t e=h->GetBinError(i);
65	if (c!=0) e = 0.5*e/c;
66	h->SetBinError(i,e);
67	}
68	}
69	void divide(TH1 *h) {
70	Int_t nb=h->GetNbinsX();
71	for (Int_t i=0; i<nb; i++) {
72	Float_t c=h->GetBinContent(i);
73	c *= h->GetBinCenter(i);
74	h->SetBinContent(i,c);
75
76	Float_t e=h->GetBinError(i);
77	e *= h->GetBinCenter(i);
78	h->SetBinError(i,e);
79	}
80	}
81
82	Int_t AliITSUComparisonCooked
83	(Float_t ptcutl=0.01, Float_t ptcuth=10., const Char_t *dir=".") {
84	gBenchmark->Start("AliITSUComparisonCooked");
85
86	::Info("AliITSUComparisonCooked.C","Doing comparison...");
87
88
89	TH1F hp=(TH1F)gROOT->FindObject("hp");
90	if (!hp) hp=new TH1F("hp","PHI resolution",50,-20.,20.);
91	hp->SetFillColor(4);
92
93	TH1F hl=(TH1F)gROOT->FindObject("hl");
94	if (!hl) hl=new TH1F("hl","LAMBDA resolution",50,-20,20);
95	hl->SetFillColor(4);
96
97	//TH1F hz=(TH1F)gROOT->FindObject("hz");
98	//if (!hz) hz=new TH1F("hz","Longitudinal impact parameter",30,-777.,777.);
99
100
101	Int_t nb=100;
102	Float_t xbins[nb+1];
103	Double_t a=TMath::Log(ptcuth/ptcutl)/nb;
104	for (Int_t i=0; i<=nb; i++) xbins[i] = ptcutlTMath::Exp(ia);
105
106	TH1F hgood=(TH1F)gROOT->FindObject("hgood");
107	if (!hgood) hgood=new TH1F("hgood","Good tracks",nb,xbins);
108
109	TH1F hfound=(TH1F)gROOT->FindObject("hfound");
110	if (!hfound) hfound=new TH1F("hfound","Found tracks",nb,xbins);
111
112	TH1F hfake=(TH1F)gROOT->FindObject("hfake");
113	if (!hfake) hfake=new TH1F("hfake","Fake tracks",nb,xbins);
114
115	TH1F hg=(TH1F)gROOT->FindObject("hg");
116	if (!hg) hg=new TH1F("hg","Efficiency for good tracks",nb,xbins);
117	hg->SetLineColor(4); hg->SetLineWidth(2);
118
119	TH1F hf=(TH1F)gROOT->FindObject("hf");
120	if (!hf) hf=new TH1F("hf","Efficiency for fake tracks",nb,xbins);
121	hf->SetFillColor(1); hf->SetFillStyle(3013); hf->SetLineWidth(2);
122
123	TH1F hpt=(TH1F)gROOT->FindObject("hpt");
124	if (!hpt) hpt=new TH1F("hpt","Relative Pt resolution",nb,xbins);
125	hpt->Sumw2();
126	TH1F hd=(TH1F)gROOT->FindObject("hd");
127	if (!hd)
128	hd=new TH1F("hd","Transverse impact parameter",nb,xbins);
129	hd->Sumw2();
130
131
132	Char_t fname[100];
133	sprintf(fname,"%s/GoodTracksCooked.root",dir);
134
135	TFile *refFile=TFile::Open(fname,"old");
136	if (!refFile \|\| !refFile->IsOpen()) {
137	::Info("AliITSUComparisonCooked.C","Marking good tracks (will take a while)...");
138	if (GoodTracksCooked(dir)) {
139	::Error("AliITSUComparisonCooked.C","Can't generate the reference file !");
140	return 1;
141	}
142	}
143	refFile=TFile::Open(fname,"old");
144	if (!refFile \|\| !refFile->IsOpen()) {
145	::Error("AliITSUComparisonCooked.C","Can't open the reference file !");
146	return 1;
147	}
148
149	TTree itsTree=(TTree)refFile->Get("itsTree");
150	if (!itsTree) {
151	::Error("AliITSUComparisonCooked.C","Can't get the reference tree !");
152	return 2;
153	}
154	TBranch *branch=itsTree->GetBranch("ITS");
155	if (!branch) {
156	::Error("AliITSUComparisonCooked.C","Can't get the ITS branch !");
157	return 3;
158	}
159	TClonesArray dummy("AliTrackReference",1000), *refs=&dummy;
160	branch->SetAddress(&refs);
161
162
163	sprintf(fname,"%s/AliESDs.root",dir);
164	TFile *ef=TFile::Open(fname);
165	if ((!ef)\|\|(!ef->IsOpen())) {
166	sprintf(fname,"%s/AliESDits.root",dir);
167	ef=TFile::Open(fname);
168	if ((!ef)\|\|(!ef->IsOpen())) {
169	::Error("AliITSUComparisonCooked.C","Can't open AliESDits.root !");
170	return 4;
171	}
172	}
173	AliESDEvent* event = new AliESDEvent();
174	TTree* esdTree = (TTree*) ef->Get("esdTree");
175	if (!esdTree) {
176	::Error("AliITSComparison.C", "no ESD tree found");
177	return 6;
178	}
179	event->ReadFromTree(esdTree);
180
181
182	//***** Loop over events *******
183	Int_t e=0;
184	while (esdTree->GetEvent(e)) {
185	cout<<endl<<endl<<"******* Processing event number: "<<e<<"*****\n";
186
187	Int_t nentr=event->GetNumberOfTracks();
188	allfound+=nentr;
189
190	if (itsTree->GetEvent(e++)==0) {
191	cerr<<"No reconstructable tracks !\n";
192	continue;
193	}
194
195	Int_t ngood=refs->GetEntriesFast();
196	allgood+=ngood;
197
198	const Int_t MAX=15000;
199	Int_t notf[MAX], nnotf=0;
200	Int_t fake[MAX], nfake=0;
201	Int_t mult[MAX], numb[MAX], nmult=0;
202	Int_t k;
203	for (k=0; k<ngood; k++) {
204	AliTrackReference ref=(AliTrackReference)refs->UncheckedAt(k);
205	Int_t lab=ref->Label(), tlab=-1;
206	Float_t ptg=TMath::Sqrt(ref->Px()ref->Px() + ref->Py()ref->Py());
207
208	Int_t pdg=(Int_t)ref->GetLength(); //this is particle's PDG !
209	if (TMath::Abs(pdg)!=211) continue; //select pions only
210
211	if (ptg<ptcutl) continue;
212	if (ptg>ptcuth) continue;
213
214	allselected++;
215
216	hgood->Fill(ptg);
217
218	AliESDtrack *esd=0;
219	Int_t cnt=0;
220	for (Int_t i=0; i<nentr; i++) {
221	AliESDtrack *t=event->GetTrack(i);
222	UInt_t status=t->GetStatus();
223
224	if ((status&AliESDtrack::kITSrefit)==0) continue;
225	if (t->GetITSclusters(0)<4) continue;
226
227	Int_t lbl=t->GetLabel();
228	if (lab==TMath::Abs(lbl)) {
229	if (cnt==0) {esd=t; tlab=lbl;}
230	if (lbl> 0) {esd=t; tlab=lbl;}
231	cnt++;
232	}
233	}
234	if (cnt==0) {
235	notf[nnotf++]=lab;
236	continue;
237	} else if (cnt>1){
238	mult[nmult]=lab;
239	numb[nmult]=cnt; nmult++;
240	}
241
242	if (lab==tlab) hfound->Fill(ptg);
243	else {
244	fake[nfake++]=lab;
245	hfake->Fill(ptg);
246	}
247
248	if (esd->GetLabel()<0) continue; //resolutions for good tracks only
249
250	Double_t alpha=esd->GetAlpha(),xv,par[5];
251	esd->GetExternalParameters(xv,par);
252	Float_t phi=TMath::ASin(par[2]) + alpha;
253	if (phi<-TMath::Pi()) phi+=2*TMath::Pi();
254	if (phi>=TMath::Pi()) phi-=2*TMath::Pi();
255	Float_t lam=TMath::ATan(par[3]);
256	Float_t pt_1=TMath::Abs(par[4]);
257
258	Float_t phig=TMath::ATan2(ref->Py(),ref->Px());
259	hp->Fill((phi - phig)*1000.);
260
261	Float_t lamg=TMath::ATan2(ref->Pz(),ptg);
262	hl->Fill((lam - lamg)*1000.);
263
264	Float_t d,z; esd->GetImpactParameters(d,z);
265	d*=10000; //microns
266	Float_t w=d*d;
267	hd->Fill(ptg, w);
268	//z*=10000; //microns
269	//hz->Fill(z);
270
271	w=(pt_1 - 1/ptg)100 (pt_1-1/ptg)*100;
272	hpt->Fill(ptg, w);
273
274	}
275
276	cout<<"\nList of Not found tracks :\n";
277	for (k=0; k<nnotf; k++){
278	cout<<notf[k]<<"\t";
279	if ((k%9)==8) cout<<"\n";
280	}
281	cout<<"\n\nList of fake tracks :\n";
282	for (k=0; k<nfake; k++){
283	cout<<fake[k]<<"\t";
284	if ((k%9)==8) cout<<"\n";
285	}
286	cout<<"\n\nList of multiple found tracks :\n";
287	for (k=0; k<nmult; k++) {
288	cout<<"id. "<<mult[k]
289	<<" found - "<<numb[k]<<"times\n";
290	}
291	cout<<endl;
292
293	cout<<"Number of found tracks : "<<nentr<<endl;
294	cout<<"Number of \"good\" tracks : "<<ngood<<endl;
295
296	refs->Clear();
297	} //***** End of the loop over events
298
299	delete event;
300	delete esdTree;
301	ef->Close();
302
303	delete itsTree;
304	refFile->Close();
305
306	Stat_t ng=hgood->GetEntries(), nf=hfound->GetEntries();
307	if (ng!=0) cout<<"\n\nIntegral efficiency is about "<<nf/ng*100.<<" %\n";
308	cout<<"Total number selected of \"good\" tracks ="<<allselected<<endl<<endl;
309	cout<<"Total number of found tracks ="<<allfound<<endl;
310	cout<<"Total number of \"good\" tracks ="<<allgood<<endl;
311	cout<<endl;
312
313	gStyle->SetOptStat(111110);
314	gStyle->SetOptFit(1);
315
316	TCanvas *c1=new TCanvas("c1","",0,0,700,850);
317
318	Int_t minc=33;
319
320	TPad *p1=new TPad("p1","",0,0.3,.5,.6); p1->Draw();
321	p1->cd(); p1->SetFillColor(42); p1->SetFrameFillColor(10);
322	hp->SetFillColor(4); hp->SetXTitle("(mrad)");
323	if (hp->GetEntries()<minc) hp->Draw(); else hp->Fit("gaus"); c1->cd();
324
325	TPad *p2=new TPad("p2","",0.5,.3,1,.6); p2->Draw();
326	p2->cd(); p2->SetFillColor(42); p2->SetFrameFillColor(10);
327	hl->SetXTitle("(mrad)");
328	if (hl->GetEntries()<minc) hl->Draw(); else hl->Fit("gaus"); c1->cd();
329
330	TPad *p3=new TPad("p3","",0,0,0.5,0.3);
331	p3->SetLogx(); p3->SetGridx(); p3->SetGridy();
332	p3->Draw();
333	p3->cd(); p3->SetFillColor(42); p3->SetFrameFillColor(10);
334	hpt->SetXTitle("p_{T} (GeV/c)");
335	hpt->SetYTitle("(%)");
336	TH1F hh=new TH1F(hfound);
337	//hh->Add(hfake);
338	hpt->Divide(hh);
339	root(hpt);
340	divide(hpt);
341	hpt->Draw(); c1->cd();
342
343	TPad *p4=new TPad("p4","",0.5,0,1,0.3);
344	p4->SetLogx(); p4->SetGridx(); p4->SetGridy();
345	p4->Draw();
346	p4->cd(); p4->SetFillColor(42); p4->SetFrameFillColor(10);
347	hd->SetXTitle("p_{T} (GeV/c)");
348	hd->SetYTitle("(micron)");
349	hd->Divide(hh);
350	root(hd);
351	hd->Draw(); c1->cd();
352
353	//hz->Draw("same"); c1->cd();
354
355
356	TPad *p5=new TPad("p5","",0,0.6,1,1);
357	p5->SetLogx(); p5->SetGridx(); p5->SetGridy();
358	p5->Draw(); p5->cd();
359	p5->SetFillColor(41); p5->SetFrameFillColor(10);
360	hfound->Sumw2(); hgood->Sumw2(); hfake->Sumw2();
361	hg->Divide(hfound,hgood,1,1.,"b");
362	hf->Divide(hfake,hgood,1,1.,"b");
363	hg->SetYTitle("Tracking efficiency (%)");
364	hg->SetXTitle("p_{T} (GeV/c)");
365	hg->Scale(100);
366	hg->Draw();
367
368	hf->SetFillColor(1);
369	hf->SetFillStyle(3013);
370	hf->SetLineColor(2);
371	hf->SetLineWidth(2);
372	hf->Scale(100);
373	hf->Draw("histsame");
374	TText *text = new TText(0.4, 20., "Fake tracks");
375	text->SetTextSize(0.05);
376	text->Draw();
377	text = new TText(0.4, 80., "Good tracks");
378	text->SetTextSize(0.05);
379	text->Draw();
380
381	TFile fc("AliITSUComparisonCooked.root","RECREATE");
382	c1->Write();
383	fc.Close();
384
385	gBenchmark->Stop("AliITSUComparisonCooked");
386	gBenchmark->Show("AliITSUComparisonCooked");
387
388	return 0;
389	}
390
391
392
393	Int_t GoodTracksCooked(const Char_t *dir) {
394	if (gAlice) {
395	delete AliRunLoader::Instance();
396	delete gAlice;//if everything was OK here it is already NULL
397	gAlice = 0x0;
398	}
399
400	Char_t fname[100];
401	sprintf(fname,"%s/galice.root",dir);
402
403	AliRunLoader *rl = AliRunLoader::Open(fname,"COMPARISON");
404	if (!rl) {
405	::Error("GoodTracksCooked","Can't start session !");
406	return 1;
407	}
408
409	rl->LoadgAlice();
410	rl->LoadHeader();
411	rl->LoadKinematics();
412
413	AliITSULoader* itsl = (AliITSULoader*)rl->GetLoader("ITSLoader");
414	if (itsl == 0x0) {
415	::Error("GoodTracksCooked","Can not find the ITSLoader");
416	delete rl;
417	return 4;
418	}
419	itsl->LoadRecPoints();
420
421
422	Int_t nev=rl->GetNumberOfEvents();
423	::Info("GoodTracksCooked","Number of events : %d\n",nev);
424
425	sprintf(fname,"%s/GoodTracksCooked.root",dir);
426	TFile *itsFile=TFile::Open(fname,"recreate");
427	TClonesArray dummy2("AliTrackReference",1000), *itsRefs=&dummy2;
428	TTree itsTree("itsTree","Tree with info about the reconstructable ITS tracks");
429	itsTree.Branch("ITS",&itsRefs);
430
431	//******** Loop over generated events
432	for (Int_t e=0; e<nev; e++) {
433	Int_t k;
434
435	rl->GetEvent(e); itsFile->cd();
436
437	Int_t np = rl->GetHeader()->GetNtrack();
438	cout<<"Event "<<e<<" Number of particles: "<<np<<endl;
439
440	AliGenEventHeader *h=rl->GetHeader()->GenEventHeader();
441	TArrayF vtx(3);
442	h->PrimaryVertex(vtx);
443
444	//******** Fill the "good" masks
445	Int_t *good=new Int_t[np]; for (k=0; k<np; k++) good[k]=0;
446
447	TTree *cTree=itsl->TreeR();
448	if (!cTree) {
449	::Error("GoodTracksCooked","Can't get the cluster tree !");
450	delete rl;
451	return 8;
452	}
453
454	const Int_t nLayers=7;
455	TBranch *branch[nLayers];
456	TClonesArray clusters[nLayers];
457	for (Int_t layer=0; layer<nLayers; layer++) {
458	TClonesArray *ptr =
459	new(clusters+layer) TClonesArray("AliITSUClusterPix",1000);
460	Char_t bname[33];
461	sprintf(bname,"ITSRecPoints%d\0",layer);
462	branch[layer]=cTree->GetBranch(bname);
463	if (!branch[layer]) {
464	::Error("GoodTracksCooked","Can't get the clusters branch !");
465	delete rl;
466	return 9;
467	}
468	branch[layer]->SetAddress(&ptr);
469	}
470
471	Int_t entr=(Int_t)cTree->GetEntries();
472	for (k=0; k<entr; k++) {
473	cTree->GetEvent(k);
474	for (Int_t lay=0; lay<nLayers; lay++) {
475	Int_t ncl=clusters[lay].GetEntriesFast(); if (ncl==0) continue;
476	while (ncl--) {
477	AliITSUClusterPix *pnt=
478	(AliITSUClusterPix*)clusters[lay].UncheckedAt(ncl);
479	Int_t l0=pnt->GetLabel(0);
480	if (l0>=np) {
481	// cerr<<"Wrong label: "<<l0<<endl;
482	continue;
483	}
484	Int_t l1=pnt->GetLabel(1);
485	if (l1>=np) {
486	// cerr<<"Wrong label: "<<l1<<endl;
487	continue;
488	}
489	Int_t l2=pnt->GetLabel(2);
490	if (l2>=np) {
491	// cerr<<"Wrong label: "<<l2<<endl;
492	continue;
493	}
494	Int_t mask=1<<lay;
495	if (l0>=0) good[l0]\|=mask;
496	if (l1>=0) good[l1]\|=mask;
497	if (l2>=0) good[l2]\|=mask;
498	}
499	clusters[lay].Clear();
500	}
501	}
502
503
504
505	//****** select tracks which are "good" enough
506	AliStack* stack = rl->Stack();
507	Int_t nt=0;
508	for (k=0; k<np; k++) {
509	if (good[k] != 0x7F) continue;
510
511	TParticle p = (TParticle)stack->Particle(k);
512	if (p == 0x0) {
513	cerr<<"Can not get particle "<<k<<endl;
514	continue;
515	}
516
517	if (p->Pt() <= 0.) continue;
518	if (TMath::Abs(p->Pz()/p->Pt())>0.999) continue;
519
520	Double_t dx=p->Vx()-vtx[0], dy=p->Vy()-vtx[1], dz=p->Vz()-vtx[2];
521	if (TMath::Sqrt(dxdx+dydy)>0.0001) continue; //Primary-like
522	if (TMath::Abs(dz) > 0.0001) continue;
523
524	AliTrackReference ref=new((itsRefs)[nt]) AliTrackReference();
525	ref->SetLabel(k);
526	Int_t pdg=p->GetPdgCode();
527	ref->SetLength(pdg); //This will the particle's PDG !
528	ref->SetMomentum(p->Px(),p->Py(),p->Pz());
529	ref->SetPosition(p->Vx(),p->Vy(),p->Vz());
530	nt++;
531	}
532
533	itsTree.Fill();
534	itsRefs->Clear();
535
536	delete[] good;
537
538	} //*** end of the loop over generated events
539
540	itsTree.Write();
541	itsFile->Close();
542
543	delete rl;
544	return 0;
545	}
546
547