T0/AliT0CalibTimeEq.cxx

   1 /**************************************************************************
   2  * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
   3  *                                                                        *
   4  * Author: The ALICE Off-line Project.                                    *
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  15
  16 /* $Id$ */
  17
  18 ///////////////////////////////////////////////////////////////////////////////
  19 //                                                                           //
  20 // class for T0 calibration                       TM-AC-AM_6-02-2006
  21 // equalize time shift for each time CFD channel
  22 //                                                                           //
  23 ///////////////////////////////////////////////////////////////////////////////
  24
  25 #include "AliT0CalibTimeEq.h"
  26 #include "AliLog.h"
  27 #include <TFile.h>
  28 #include <TMath.h>
  29 #include <TF1.h>
  30 #include <TSpectrum.h>
  31 #include <TProfile.h>
  32 #include <iostream>
  33
  34 ClassImp(AliT0CalibTimeEq)
  35
  36 //________________________________________________________________
  37   AliT0CalibTimeEq::AliT0CalibTimeEq():TNamed(),
  38                                        fMeanVertex(0),
  39                                        fRmsVertex(0)
  40 {
  41   //
  42
  43 }
  44
  45 //________________________________________________________________
  46 AliT0CalibTimeEq::AliT0CalibTimeEq(const char* name):TNamed(),
  47                                        fMeanVertex(0),
  48                                        fRmsVertex(0)
  49 {
  50   //constructor
  51
  52   TString namst = "Calib_";
  53   namst += name;
  54   SetName(namst.Data());
  55   SetTitle(namst.Data());
  56 }
  57
  58 //________________________________________________________________
  59 AliT0CalibTimeEq::AliT0CalibTimeEq(const AliT0CalibTimeEq& calibda):TNamed(calibda),
  60                                        fMeanVertex(0),
  61                                        fRmsVertex(0)
  62 {
  63 // copy constructor
  64   SetName(calibda.GetName());
  65   SetTitle(calibda.GetName());
  66
  67
  68 }
  69
  70 //________________________________________________________________
  71 AliT0CalibTimeEq &AliT0CalibTimeEq::operator =(const AliT0CalibTimeEq& calibda)
  72 {
  73 // assignment operator
  74   SetName(calibda.GetName());
  75   SetTitle(calibda.GetName());
  76
  77   return *this;
  78 }
  79
  80 //________________________________________________________________
  81 AliT0CalibTimeEq::~AliT0CalibTimeEq()
  82 {
  83   //
  84   // destrictor
  85 }
  86 //________________________________________________________________
  87 void AliT0CalibTimeEq::Reset()
  88 {
  89   //reset values
  90
  91   memset(fCFDvalue,0,120*sizeof(Float_t));
  92   memset(fTimeEq,1,24*sizeof(Float_t));
  93 }
  94
  95
  96 //________________________________________________________________
  97 void  AliT0CalibTimeEq::Print(Option_t*) const
  98 {
  99   // print time values
 100
 101   printf("\n    ----    PM Arrays       ----\n\n");
 102   printf(" Time delay CFD \n");
 103   for (Int_t i=0; i<24; i++) printf(" CFD  %f ",fTimeEq[i]);
 104   printf("\n Mean Vertex %f \n", fMeanVertex);
 105 }
 106
 107
 108 //________________________________________________________________
 109 Bool_t AliT0CalibTimeEq::ComputeOnlineParams(const char* filePhys)
 110 {
 111   // compute online equalized time
 112   Float_t meandiff, sigmadiff, meanver, meancfdtime, sigmacfdtime;
 113   meandiff = sigmadiff =  meanver = meancfdtime = sigmacfdtime =0;
 114   Double_t rmsver=0;
 115   Int_t nent=0;
 116   Bool_t ok=false;
 117   gFile = TFile::Open(filePhys);
 118   if(!gFile) {
 119     AliError("No input PHYS data found ");
 120   }
 121   else
 122     {
 123       ok=true;
 124       for (Int_t i=0; i<24; i++)
 125         {
 126           meandiff = sigmadiff =  meanver = meancfdtime = sigmacfdtime =0;
 127           TH1F *cfd = (TH1F*) gFile->Get(Form("CFD1minCFD%d",i+1));
 128           TH1F *cfdtime = (TH1F*) gFile->Get(Form("CFD%d",i+1));
 129           if(!cfd) AliWarning(Form("no Diff histograms collected by PHYS DA for channel %i", i));
 130           if(!cfdtime) AliWarning(Form("no CFD histograms collected by PHYS DA for channel %i", i));
 131           if(cfd) {
 132             nent = Int_t(cfd->GetEntries());
 133             if(nent>500)  {
 134               if(cfd->GetRMS()>1.5 )
 135                 GetMeanAndSigma(cfd, meandiff, sigmadiff);
 136               if(cfd->GetRMS()<=1.5)
 137                 {
 138                   meandiff = cfd->GetMean();
 139                   sigmadiff=cfd->GetRMS();
 140                 }
 141               if(TMath::Abs(cfd->GetMean() - meandiff) >10 ) meandiff = cfd->GetMean();
 142             }
 143             else
 144               {
 145                 ok=false;
 146                 AliWarning(Form(" Not  enouph data in PMT %i- PMT1:  %i ", i, nent));
 147               }
 148             if(!cfd) AliWarning(Form("no CFD histograms collected by PHYS DA for channel %i", i));
 149           }
 150           //      printf(" i = %d buf1 = %s\n", i, buf1);
 151           if(cfdtime) {
 152             nent = Int_t(cfdtime->GetEntries());
 153             if(nent > 500 )  { //!!!!!!!!!!
 154               if(cfdtime->GetRMS()>1.5 )
 155                 GetMeanAndSigma(cfdtime,meancfdtime, sigmacfdtime);
 156               if(cfdtime->GetRMS()<=1.5)
 157                 {
 158                   meancfdtime = cfdtime->GetMean();
 159                   sigmacfdtime = cfdtime->GetRMS();
 160                 }
 161               if(TMath::Abs(cfdtime->GetMean() - meancfdtime) >20 ) meancfdtime = cfdtime->GetMean();
 162             }
 163           }
 164           else
 165             {
 166               ok=false;
 167               AliWarning(Form(" Not  enouph data in PMT in CFD peak %i - %i ", i, nent));
 168             }
 169           printf(" %i %f %f %f %f \n",i, meandiff, sigmadiff, meancfdtime, sigmacfdtime);
 170           SetTimeEq(i,meandiff);
 171           SetTimeEqRms(i,sigmadiff);
 172           SetCFDvalue(i,0,meancfdtime);
 173           if (cfd) delete cfd;
 174           if (cfdtime) delete cfdtime;
 175
 176         }
 177       TH1F *ver = (TH1F*) gFile->Get("hVertex");
 178       if(!ver) AliWarning("no T0 histogram collected by PHYS DA ");
 179       if(ver) {
 180         meanver = ver->GetMean();
 181         rmsver = ver->GetRMS();
 182       }
 183       SetMeanVertex(meanver);
 184       SetRmsVertex(rmsver);
 185
 186       gFile->Close();
 187       delete gFile;
 188
 189     }
 190     return ok;
 191 }
 192
 193 //________________________________________________________________
 194 Bool_t AliT0CalibTimeEq::ComputeOfflineParams(const char* filePhys, Float_t *timecdb, Float_t *cfdvalue, Int_t badpmt)
 195 {
 196   // compute online equalized time
 197   Float_t meandiff, sigmadiff, meanver, meancfdtime, sigmacfdtime;
 198   meandiff = sigmadiff =  meanver = meancfdtime = sigmacfdtime =0;
 199   Double_t rmsver=0;
 200   Int_t nent=0;
 201   Bool_t ok=false;
 202   gFile = TFile::Open(filePhys);
 203   if(!gFile) {
 204     AliError("No input PHYS data found ");
 205     return ok;
 206   }
 207   else
 208     {
 209
 210       meandiff = sigmadiff =  meanver = meancfdtime = sigmacfdtime =0;
 211       ok=true;
 212       TDirectory *dr = (TDirectory*) gFile->Get("T0Calib");
 213       if (!dr ) { AliError("No input T0calib found ");
 214         return ok;
 215       }
 216       TObjArray * TzeroObj = (TObjArray*) dr->Get("fTzeroObject");
 217       for (Int_t i=0; i<24; i++)
 218         {
 219           printf("@@@ were in OCDB before %f \n", timecdb[i]);
 220           if (i != badpmt) {
 221           TH1F *cfddiff = (TH1F*)TzeroObj->At(i);
 222           TH1F *cfdtime = (TH1F*)TzeroObj->At(i+24);
 223           if(!cfddiff) AliWarning(Form("no Diff histograms collected by PHYS DA for channel %i", i));
 224           //      printf(" i = %d buf1 = %s\n", i, buf1);
 225           if(!cfdtime) AliWarning(Form("no CFD histograms collected by PHYS DA for channel %i", i));
 226           if(cfddiff) {
 227             nent = Int_t(cfddiff->GetEntries());
 228             if(nent>500 )  { //!!!!!
 229               if(cfddiff->GetRMS()>1.5 )
 230                 GetMeanAndSigma(cfddiff, meandiff, sigmadiff);
 231               if(cfddiff->GetRMS()<=1.5)
 232                 {
 233                   meandiff = cfddiff->GetMean();
 234                   sigmadiff = cfddiff->GetRMS();
 235                 }
 236               if(TMath::Abs(cfddiff->GetMean() - meandiff) >10 ) meandiff = cfddiff->GetMean();
 237
 238             }
 239             else
 240               {
 241                 ok=false;
 242                 AliWarning(Form(" Not  enouph data in PMT %i- PMT1:  %i ", i, nent));
 243               }
 244           }
 245           if(cfdtime) {
 246             nent = Int_t(cfdtime->GetEntries());
 247             if(nent>500 )  { //!!!!!
 248               if(cfdtime->GetRMS()>1.5 )
 249                 GetMeanAndSigma(cfdtime,meancfdtime, sigmacfdtime);
 250               if(cfdtime->GetRMS()<=1.5)
 251                 {
 252                   meancfdtime = cfdtime->GetMean();
 253                   sigmacfdtime=cfdtime->GetRMS();
 254                 }
 255               if(TMath::Abs(cfdtime->GetMean() - meancfdtime) >20 ) meancfdtime = cfdtime->GetMean();
 256             }
 257             else
 258               {
 259                 ok=false;
 260                 AliWarning(Form(" Not  enouph data in PMT in CFD peak %i - %i ", i, nent));
 261               }
 262           }
 263           SetTimeEq(i,timecdb[i] + meandiff);
 264           SetTimeEqRms(i,sigmadiff);
 265           SetCFDvalue(i,0,cfdvalue[i] + meancfdtime );
 266           //SetCFDvalue(i,0,cfdvalue[i] );
 267           if (cfddiff) delete cfddiff;
 268           if (cfdtime) delete cfdtime;
 269           } //bad pmt
 270         }
 271       TH1F *ver = (TH1F*) gFile->Get("hVertex");
 272       if(!ver) AliWarning("no T0 histogram collected by PHYS DA ");
 273       if(ver) {
 274         meanver = ver->GetMean();
 275         rmsver = ver->GetRMS();
 276       }
 277       SetMeanVertex(meanver);
 278       SetRmsVertex(rmsver);
 279
 280       gFile->Close();
 281       delete gFile;
 282
 283     }
 284     return ok;
 285    }
 286
 287 //________________________________________________________________________
 288 void AliT0CalibTimeEq::GetMeanAndSigma(TH1F* hist,  Float_t &mean, Float_t &sigma) {
 289
 290   const double window = 2.;  //fit window
 291
 292   double meanEstimate, sigmaEstimate;
 293   int maxBin;
 294   maxBin        =  hist->GetMaximumBin(); //position of maximum
 295   meanEstimate  =  hist->GetBinCenter( maxBin); // mean of gaussian sitting in maximum
 296   sigmaEstimate = hist->GetRMS();
 297   TF1* fit= new TF1("fit","gaus", meanEstimate - window*sigmaEstimate, meanEstimate + window*sigmaEstimate);
 298   fit->SetParameters(hist->GetBinContent(maxBin), meanEstimate, sigmaEstimate);
 299   hist->Fit("fit","RQ","Q");
 300
 301   mean  = (Float_t) fit->GetParameter(1);
 302   sigma = (Float_t) fit->GetParameter(2);
 303
 304   delete fit;
 305 }
 306
 307