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(cfd) {
 131             nent = Int_t(cfd->GetEntries());
 132             if(nent>500 )  {
 133               if(cfd->GetRMS()>1.5 &&  cfd->GetRMS()<20)
 134                 GetMeanAndSigma(cfd, meandiff, sigmadiff);
 135               if(cfd->GetRMS()<=1.5)
 136                 {
 137                   meandiff = cfd->GetMean();
 138                   sigmadiff=cfd->GetRMS();
 139                 }
 140
 141               if(cfd->GetRMS()>20)
 142                 {
 143                   ok=false;
 144                   AliWarning(Form("Data is not good  in PMT %i - mean %f rsm %f nentries %i", i,meandiff,sigmadiff , nent));
 145                 }
 146             }
 147             else
 148               {
 149                 ok=false;
 150                 AliWarning(Form(" Not  enouph data in PMT %i- PMT1:  %i ", i, nent));
 151               }
 152             if(!cfd) AliWarning(Form("no CFD histograms collected by PHYS DA for channel %i", i));
 153           }
 154             //      printf(" i = %d buf1 = %s\n", i, buf1);
 155           if(cfdtime) {
 156             nent = Int_t(cfdtime->GetEntries());
 157             if(nent>500 )  {
 158               if(cfdtime->GetRMS()>1.5 )
 159                 GetMeanAndSigma(cfdtime,meancfdtime, sigmacfdtime);
 160               if(cfdtime->GetRMS()<=1.5)
 161                 {
 162                   meancfdtime = cfdtime->GetMean();
 163                   sigmacfdtime = cfdtime->GetRMS();
 164                 }
 165               if(sigmacfdtime>50 )
 166                 {
 167                   ok=false;
 168                   AliWarning(Form("Data is not good enouph in PMT %i  - meancfdtime %f rsm %f nentries %i", i,meancfdtime, sigmacfdtime, nent));
 169                 }
 170             }
 171           }
 172           else
 173             {
 174               ok=false;
 175               AliWarning(Form(" Not  enouph data in PMT in CFD peak %i - %i ", i, nent));
 176             }
 177           //      printf(" %i %f %f %f %f \n",i, meandiff, sigmadiff, meancfdtime, sigmacfdtime);
 178           SetTimeEq(i,meandiff);
 179           SetTimeEqRms(i,sigmadiff);
 180           SetCFDvalue(i,0,meancfdtime);
 181           SetCFDvalue(i,0,sigmacfdtime);
 182           if (cfd) delete cfd;
 183           if (cfdtime) delete cfdtime;
 184
 185         }
 186       TH1F *ver = (TH1F*) gFile->Get("hVertex");
 187       if(!ver) AliWarning("no T0 histogram collected by PHYS DA ");
 188       if(ver) {
 189         meanver = ver->GetMean();
 190         rmsver = ver->GetRMS();
 191       }
 192       SetMeanVertex(meanver);
 193       SetRmsVertex(rmsver);
 194
 195       gFile->Close();
 196       delete gFile;
 197
 198     }
 199     return ok;
 200 }
 201
 202 //________________________________________________________________
 203 Bool_t AliT0CalibTimeEq::ComputeOfflineParams(const char* filePhys, Float_t *timecdb, Int_t badpmt)
 204 {
 205   // compute online equalized time
 206   Float_t meandiff, sigmadiff, meanver, meancfdtime, sigmacfdtime;
 207   meandiff = sigmadiff =  meanver = meancfdtime = sigmacfdtime =0;
 208   Double_t rmsver=0;
 209   Int_t nent=0;
 210   Bool_t ok=false;
 211   gFile = TFile::Open(filePhys);
 212   if(!gFile) {
 213     AliError("No input PHYS data found ");
 214   }
 215   else
 216     {
 217       meandiff = sigmadiff =  meanver = meancfdtime = sigmacfdtime =0;
 218       ok=true;
 219     TDirectory *dr = (TDirectory*) gFile->Get("T0Calib");
 220     TObjArray * TzeroObj = (TObjArray*) dr->Get("fTzeroObject");
 221        for (Int_t i=0; i<24; i++)
 222         {
 223           if (i != badpmt) {
 224           TH1F *cfddiff = (TH1F*)TzeroObj->At(i);
 225           TH1F *cfdtime = (TH1F*)TzeroObj->At(i+24);
 226           if(!cfddiff) AliWarning(Form("no Diff histograms collected by PHYS DA for channel %i", i));
 227           //      printf(" i = %d buf1 = %s\n", i, buf1);
 228           if(cfddiff) {
 229             nent = Int_t(cfddiff->GetEntries());
 230             if(nent>10 )  {
 231               if(cfddiff->GetRMS()>1.5 &&  cfddiff->GetRMS()<30)
 232                 GetMeanAndSigma(cfddiff, meandiff, sigmadiff);
 233               if(cfddiff->GetRMS()<=1.5)
 234                 {
 235                   meandiff = cfddiff->GetMean();
 236                   sigmadiff = cfddiff->GetRMS();
 237                 }
 238               //   printf(" ipmt %i meandiff %f sigmadiff %f mean %f rms %f\n", i, meandiff,sigmadiff,cfddiff->GetMean(),  cfddiff->GetRMS() );
 239
 240               if(sigmadiff > 30)
 241                 {
 242                   ok=false;
 243                   AliWarning(Form("Data is not good  in PMT %i - mean %f rsm %f nentries %i", i,meandiff,sigmadiff , nent));
 244                 }
 245
 246             }
 247             else
 248               {
 249                 ok=false;
 250                 AliWarning(Form(" Not  enouph data in PMT %i- PMT1:  %i ", i, nent));
 251               }
 252           }
 253           if(cfdtime) {
 254             nent = Int_t(cfdtime->GetEntries());
 255             if(nent>10 )  {
 256               if(cfdtime->GetRMS()>1.5 )
 257                 GetMeanAndSigma(cfdtime,meancfdtime, sigmacfdtime);
 258               if(cfdtime->GetRMS()<=1.5)
 259                 {
 260                   meancfdtime = cfdtime->GetMean();
 261                   sigmacfdtime=cfdtime->GetRMS();
 262                 }
 263               if(sigmacfdtime>50)
 264                 {
 265                   ok=false;
 266                   AliWarning(Form("Data is not good enouph in PMT %i  - meancfdtime %f rsm %f nentries %i", i,meancfdtime, sigmacfdtime, nent));
 267                 }
 268             }
 269             else
 270               {
 271                 ok=false;
 272                 AliWarning(Form(" Not  enouph data in PMT in CFD peak %i - %i ", i, nent));
 273               }
 274           }
 275           SetTimeEq(i,timecdb[i] + meandiff);
 276           SetTimeEqRms(i,sigmadiff);
 277           SetCFDvalue(i,0,meancfdtime);
 278           SetCFDvalue(i,0,sigmacfdtime);
 279           if (cfddiff) delete cfddiff;
 280           if (cfdtime) delete cfdtime;
 281           } //bad pmt
 282         }
 283       TH1F *ver = (TH1F*) gFile->Get("hVertex");
 284       if(!ver) AliWarning("no T0 histogram collected by PHYS DA ");
 285       if(ver) {
 286         meanver = ver->GetMean();
 287         rmsver = ver->GetRMS();
 288       }
 289       SetMeanVertex(meanver);
 290       SetRmsVertex(rmsver);
 291
 292       gFile->Close();
 293       delete gFile;
 294
 295     }
 296     return ok;
 297    }
 298
 299 //________________________________________________________________________
 300 void AliT0CalibTimeEq::GetMeanAndSigma(TH1F* hist,  Float_t &mean, Float_t &sigma) {
 301
 302   const double window = 5.;  //fit window
 303
 304   double meanEstimate, sigmaEstimate;
 305   int maxBin;
 306   maxBin        =  hist->GetMaximumBin(); //position of maximum
 307   meanEstimate  =  hist->GetBinCenter( maxBin); // mean of gaussian sitting in maximum
 308   sigmaEstimate = hist->GetRMS();
 309   TF1* fit= new TF1("fit","gaus", meanEstimate - window*sigmaEstimate, meanEstimate + window*sigmaEstimate);
 310   fit->SetParameters(hist->GetBinContent(maxBin), meanEstimate, sigmaEstimate);
 311   hist->Fit("fit","RQ","Q");
 312
 313   mean  = (Float_t) fit->GetParameter(1);
 314   sigma = (Float_t) fit->GetParameter(2);
 315
 316   delete fit;
 317 }
 318
 319