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                 Int_t   maxBin = cfd->GetMaximumBin();
 142                 Double_t  meanEstimate = cfd->GetBinCenter( maxBin);
 143                 if(TMath::Abs(meanEstimate - meandiff) > 20 ) meandiff = meanEstimate;
 144             }
 145             else
 146               {
 147                 ok=false;
 148                 AliWarning(Form(" Not  enouph data in PMT %i- PMT1:  %i ", i, nent));
 149               }
 150             if(!cfd) AliWarning(Form("no CFD histograms collected by PHYS DA for channel %i", i));
 151           }
 152           //      printf(" i = %d buf1 = %s\n", i, buf1);
 153           if(cfdtime) {
 154             nent = Int_t(cfdtime->GetEntries());
 155             if(nent > 500 )  { //!!!!!!!!!!
 156               if(cfdtime->GetRMS()>1.5 )
 157                 GetMeanAndSigma(cfdtime,meancfdtime, sigmacfdtime);
 158               if(cfdtime->GetRMS()<=1.5)
 159                 {
 160                   meancfdtime = cfdtime->GetMean();
 161                   sigmacfdtime = cfdtime->GetRMS();
 162                 }
 163                 Int_t   maxBin = cfdtime->GetMaximumBin();
 164                 Double_t  meanEstimate = cfdtime->GetBinCenter( maxBin);
 165                 if(TMath::Abs(meanEstimate - meancfdtime) > 20 ) meancfdtime = meanEstimate;
 166             }
 167           }
 168           else
 169             {
 170               ok=false;
 171               AliWarning(Form(" Not  enouph data in PMT in CFD peak %i - %i ", i, nent));
 172             }
 173           SetTimeEq(i,meandiff);
 174           SetTimeEqRms(i,sigmadiff);
 175           SetCFDvalue(i,0,meancfdtime);
 176           if (cfd) delete cfd;
 177           if (cfdtime) delete cfdtime;
 178
 179         }
 180       TH1F *ver = (TH1F*) gFile->Get("hVertex");
 181       if(!ver) AliWarning("no T0 histogram collected by PHYS DA ");
 182       if(ver) {
 183         meanver = ver->GetMean();
 184         rmsver = ver->GetRMS();
 185       }
 186       SetMeanVertex(meanver);
 187       SetRmsVertex(rmsver);
 188
 189       gFile->Close();
 190       delete gFile;
 191
 192     }
 193     return ok;
 194 }
 195
 196 //________________________________________________________________
 197 Bool_t AliT0CalibTimeEq::ComputeOfflineParams(const char* filePhys, Float_t *timecdb, Float_t *cfdvalue, Int_t badpmt)
 198 {
 199   // compute online equalized time
 200   Float_t meandiff, sigmadiff, meanver, meancfdtime, sigmacfdtime;
 201   meandiff = sigmadiff =  meanver = meancfdtime = sigmacfdtime =0;
 202   Int_t nent=0;
 203   Bool_t ok=false;
 204   TH1F *cfddiff = NULL;
 205   TH1F *cfdtime = NULL;
 206
 207   gFile = TFile::Open(filePhys);
 208   if(!gFile) {
 209     AliError("No input PHYS data found ");
 210     return ok;
 211   }
 212   else
 213     {
 214       meandiff = sigmadiff =  meanver = meancfdtime = sigmacfdtime =0;
 215       ok=true;
 216       TDirectory *dr = (TDirectory*) gFile->Get("T0Calib");
 217       if (!dr ) { AliError("No input T0calib found ");
 218         return ok;
 219       }
 220       TObjArray * TzeroObj = (TObjArray*) dr->Get("T0Calib");
 221
 222       for (Int_t i=0; i<24; i++)
 223         {
 224           if (i != badpmt) {
 225             if(TzeroObj) {
 226               cfddiff = (TH1F*)TzeroObj->FindObject(Form("CFD1minCFD%d",i+1));
 227               cfdtime = (TH1F*)TzeroObj->FindObject(Form("CFD1minCFD%d",i+1));
 228             }
 229             else
 230               {
 231                 cfddiff = (TH1F*)dr->Get(Form("CFD1minCFD%d",i+1));
 232                 cfdtime = (TH1F*)dr->Get(Form("CFD1minCFD%d",i+1));
 233               }
 234             if(!cfddiff) AliWarning(Form("no Diff histograms collected by pass0 for channel %i", i));
 235             if(!cfdtime) AliWarning(Form("no CFD histograms collected by pass0 %i", i));
 236           if(cfddiff) {
 237             nent = Int_t(cfddiff->GetEntries());
 238             if(nent>500 )  { //!!!!!
 239               if(cfddiff->GetRMS()>1.5 )
 240                 GetMeanAndSigma(cfddiff, meandiff, sigmadiff);
 241               if(cfddiff->GetRMS()<=1.5)
 242                 {
 243                   meandiff = cfddiff->GetMean();
 244                   sigmadiff = cfddiff->GetRMS();
 245                 }
 246                 Int_t   maxBin = cfddiff->GetMaximumBin();
 247                 Double_t  meanEstimate = cfddiff->GetBinCenter( maxBin);
 248                 if(TMath::Abs(meanEstimate - meandiff) > 20 ) meandiff = meanEstimate;
 249
 250             }
 251             else
 252               {
 253                 ok=false;
 254                 AliWarning(Form(" Not  enouph data in PMT %i- PMT1:  %i ", i, nent));
 255               }
 256           }
 257
 258           if(cfdtime) {
 259             nent = Int_t(cfdtime->GetEntries());
 260             if(nent>500 )  { //!!!!!
 261               if(cfdtime->GetRMS()>1.5 )
 262                 GetMeanAndSigma(cfdtime,meancfdtime, sigmacfdtime);
 263               if(cfdtime->GetRMS()<=1.5)
 264                 {
 265                   meancfdtime = cfdtime->GetMean();
 266                   sigmacfdtime=cfdtime->GetRMS();
 267                 }
 268                 Int_t   maxBin = cfdtime->GetMaximumBin();
 269                 Double_t  meanEstimate = cfdtime->GetBinCenter( maxBin);
 270                 if(TMath::Abs(meanEstimate - meancfdtime) > 20 ) meancfdtime = meanEstimate;
 271             }
 272             else
 273               {
 274                 ok=false;
 275                 AliWarning(Form(" Not  enouph data in PMT in CFD peak %i - %i ", i, nent));
 276               }
 277           }
 278
 279           SetTimeEq(i,timecdb[i] + meandiff);
 280           SetTimeEqRms(i,sigmadiff);
 281           SetCFDvalue(i,0,cfdvalue[i] );
 282           if (cfddiff) cfddiff->Reset();
 283           if (cfdtime) cfdtime->Reset();
 284           } //bad pmt
 285         }
 286
 287       gFile->Close();
 288       delete gFile;
 289
 290     }
 291     return ok;
 292    }
 293
 294 //________________________________________________________________________
 295 void AliT0CalibTimeEq::GetMeanAndSigma(TH1F* hist,  Float_t &mean, Float_t &sigma) {
 296
 297   const double window = 2.;  //fit window
 298
 299   double meanEstimate, sigmaEstimate;
 300   int maxBin;
 301   maxBin        =  hist->GetMaximumBin(); //position of maximum
 302   meanEstimate  =  hist->GetBinCenter( maxBin); // mean of gaussian sitting in maximum
 303   sigmaEstimate = hist->GetRMS();
 304   TF1* fit= new TF1("fit","gaus", meanEstimate - window*sigmaEstimate, meanEstimate + window*sigmaEstimate);
 305   fit->SetParameters(hist->GetBinContent(maxBin), meanEstimate, sigmaEstimate);
 306   hist->Fit("fit","RQ","Q");
 307
 308   mean  = (Float_t) fit->GetParameter(1);
 309   sigma = (Float_t) fit->GetParameter(2);
 310
 311   delete fit;
 312 }
 313
 314