T0/AliT0CalibTimeEq.cxx

   1
   2 /**************************************************************************
   3  * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
   4  *                                                                        *
   5  * Author: The ALICE Off-line Project.                                    *
   6  * Contributors are mentioned in the code where appropriate.              *
   7  *                                                                        *
   8  * Permission to use, copy, modify and distribute this software and its   *
   9  * documentation strictly for non-commercial purposes is hereby granted   *
  10  * without fee, provided that the above copyright notice appears in all   *
  11  * copies and that both the copyright notice and this permission notice   *
  12  * appear in the supporting documentation. The authors make no claims     *
  13  * about the suitability of this software for any purpose. It is          *
  14  * provided "as is" without express or implied warranty.                  *
  15  **************************************************************************/
  16
  17 /* $Id$ */
  18
  19 ///////////////////////////////////////////////////////////////////////////////
  20 //                                                                           //
  21 // class for T0 calibration                       TM-AC-AM_6-02-2006
  22 // equalize time shift for each time CFD channel
  23 //                                                                           //
  24 ///////////////////////////////////////////////////////////////////////////////
  25
  26 #include "AliT0CalibTimeEq.h"
  27 #include "AliLog.h"
  28 #include <TFile.h>
  29 #include <TMath.h>
  30 #include <TF1.h>
  31 #include <TSpectrum.h>
  32 #include <TProfile.h>
  33 #include <iostream>
  34
  35 ClassImp(AliT0CalibTimeEq)
  36
  37 //________________________________________________________________
  38   AliT0CalibTimeEq::AliT0CalibTimeEq():TNamed(),
  39                                        fMeanVertex(0),
  40                                        fRmsVertex(0)
  41 {
  42   //
  43
  44 }
  45
  46 //________________________________________________________________
  47 AliT0CalibTimeEq::AliT0CalibTimeEq(const char* name):TNamed(),
  48                                        fMeanVertex(0),
  49                                        fRmsVertex(0)
  50 {
  51   //constructor
  52
  53   TString namst = "Calib_";
  54   namst += name;
  55   SetName(namst.Data());
  56   SetTitle(namst.Data());
  57 }
  58
  59 //________________________________________________________________
  60 AliT0CalibTimeEq::AliT0CalibTimeEq(const AliT0CalibTimeEq& calibda):TNamed(calibda),
  61                                        fMeanVertex(0),
  62                                        fRmsVertex(0)
  63 {
  64 // copy constructor
  65   SetName(calibda.GetName());
  66   SetTitle(calibda.GetName());
  67
  68
  69 }
  70
  71 //________________________________________________________________
  72 AliT0CalibTimeEq &AliT0CalibTimeEq::operator =(const AliT0CalibTimeEq& calibda)
  73 {
  74 // assignment operator
  75   SetName(calibda.GetName());
  76   SetTitle(calibda.GetName());
  77
  78   return *this;
  79 }
  80
  81 //________________________________________________________________
  82 AliT0CalibTimeEq::~AliT0CalibTimeEq()
  83 {
  84   //
  85   // destrictor
  86 }
  87 //________________________________________________________________
  88 void AliT0CalibTimeEq::Reset()
  89 {
  90   //reset values
  91
  92   memset(fCFDvalue,0,120*sizeof(Float_t));
  93   memset(fTimeEq,1,24*sizeof(Float_t));
  94 }
  95
  96
  97 //________________________________________________________________
  98 void  AliT0CalibTimeEq::Print(Option_t*) const
  99 {
 100   // print time values
 101
 102   printf("\n    ----    PM Arrays       ----\n\n");
 103   printf(" Time delay CFD \n");
 104   for (Int_t i=0; i<24; i++) printf(" CFD  %f ",fTimeEq[i]);
 105   printf("\n Mean Vertex %f \n", fMeanVertex);
 106 }
 107
 108
 109 //________________________________________________________________
 110 Bool_t AliT0CalibTimeEq::ComputeOnlineParams(const char* filePhys)
 111 {
 112   // compute online equalized time
 113   Float_t meandiff, sigmadiff, meanver, meancfdtime, sigmacfdtime;
 114   meandiff = sigmadiff =  meanver = meancfdtime = sigmacfdtime =0;
 115   Double_t rmsver=0;
 116   Int_t nent=0;
 117   Bool_t ok=false;
 118   gFile = TFile::Open(filePhys);
 119   if(!gFile) {
 120     AliError("No input PHYS data found ");
 121   }
 122   else
 123     {
 124       ok=true;
 125       for (Int_t i=0; i<24; i++)
 126         {
 127
 128           meandiff = sigmadiff =  meanver = meancfdtime = sigmacfdtime =0;
 129           TH1F *cfd = (TH1F*) gFile->Get(Form("CFD1minCFD%d",i+1));
 130           TH1F *cfdtime = (TH1F*) gFile->Get(Form("CFD%d",i+1));
 131           if(!cfd) {
 132             AliWarning(Form("no Diff histograms collected by PHYS DA for channel %i", i));
 133           }
 134           if(!cfdtime) {
 135             AliWarning(Form("no CFD histograms collected by PHYS DA for channel %i", i));
 136           }
 137           if(cfd) {
 138             nent = Int_t(cfd->GetEntries());
 139             if(nent>50)  {
 140               if(cfd->GetRMS()>1.5 )
 141                 GetMeanAndSigma(cfd, meandiff, sigmadiff);
 142               if(cfd->GetRMS()<=1.5)
 143                 {
 144                   meandiff = cfd->GetMean();
 145                   sigmadiff=cfd->GetRMS();
 146                 }
 147               Int_t   maxBin = cfd->GetMaximumBin();
 148               Double_t  meanEstimate = cfd->GetBinCenter( maxBin);
 149               if(TMath::Abs(meanEstimate - meandiff) > 20 ) meandiff = meanEstimate;
 150             }
 151             else
 152               {
 153                 //      ok=false;
 154                 AliWarning(Form(" Not  enouph data in PMT %i- PMT1:  %i ", i, nent));
 155               }
 156           }
 157           if(cfdtime) {
 158             nent = Int_t(cfdtime->GetEntries());
 159             if(nent > 50 )  { //!!!!!!!!!!
 160               if(cfdtime->GetRMS()>1.5 )
 161                 GetMeanAndSigma(cfdtime,meancfdtime, sigmacfdtime);
 162               if(cfdtime->GetRMS()<=1.5)
 163                 {
 164                   meancfdtime = cfdtime->GetMean();
 165                   sigmacfdtime = cfdtime->GetRMS();
 166                 }
 167               Int_t   maxBin = cfdtime->GetMaximumBin();
 168               Double_t  meanEstimate = cfdtime->GetBinCenter( maxBin);
 169               if(TMath::Abs(meanEstimate - meancfdtime) > 20 ) meancfdtime = meanEstimate;
 170             }
 171             else
 172               {
 173                 //      ok=false;
 174                 AliWarning(Form(" Not  enouph data in PMT in CFD peak %i - %i ", i, nent));
 175               }
 176           }
 177           SetTimeEq(i,meandiff);
 178           SetTimeEqRms(i,sigmadiff);
 179           SetCFDvalue(i,0,meancfdtime);
 180           if (cfd) delete cfd;
 181           if (cfdtime) delete cfdtime;
 182
 183         }
 184       TH1F *ver = (TH1F*) gFile->Get("hVertex");
 185       if(ver) {
 186         meanver = ver->GetMean();
 187         rmsver = ver->GetRMS();
 188       }
 189       SetMeanVertex(meanver);
 190       SetRmsVertex(rmsver);
 191
 192       gFile->Close();
 193       delete gFile;
 194
 195     }
 196     return ok;
 197 }
 198
 199 //________________________________________________________________
 200   Bool_t AliT0CalibTimeEq::ComputeOfflineParams(const char* filePhys, Float_t *timecdb, Float_t *cfdvalue, Int_t badpmt)
 201 {
 202   // compute offline equalized time
 203   Float_t meandiff, sigmadiff, meanver, meancfdtime, sigmacfdtime;
 204   meandiff = sigmadiff =  meanver = meancfdtime = sigmacfdtime =0;
 205   Int_t nent=0;
 206   Bool_t ok=false;
 207   TH1F *cfddiff = NULL;
 208   TH1F *cfdtime = NULL;
 209   TObjArray * TzeroObj = NULL;
 210
 211   gFile = TFile::Open(filePhys);
 212   if(!gFile) {
 213     AliError("No input PHYS data found ");
 214     return ok;
 215   }
 216   else
 217     {
 218       meandiff = sigmadiff =  meanver = meancfdtime = sigmacfdtime =0;
 219       ok=true;
 220       TDirectory *dr = (TDirectory*) gFile->Get("T0Calib");
 221       if (dr)   TzeroObj = (TObjArray*) dr->Get("T0Calib");
 222
 223       for (Int_t i=0; i<24; i++)
 224         {
 225           if (i != badpmt) {
 226             if(TzeroObj) {
 227               cfddiff = (TH1F*)TzeroObj->FindObject(Form("CFD1minCFD%d",i+1));
 228               cfdtime = (TH1F*)TzeroObj->FindObject(Form("CFD%d",i+1));
 229             }
 230             else
 231               {
 232                 cfddiff = (TH1F*)gFile->Get(Form("CFD1minCFD%d",i+1));
 233                 cfdtime = (TH1F*)gFile->Get(Form("CFD%d",i+1));
 234
 235               }
 236             if(!cfddiff ) {
 237               AliWarning(Form("no  histograms collected by pass0 for diff channel %i", i));
 238               SetTimeEq(i,timecdb[i]);
 239               SetTimeEqRms(i,0);
 240             }
 241             if(cfddiff) {
 242               nent = Int_t(cfddiff->GetEntries());
 243               if(nent>100 )  { //!!!!!
 244                 if(cfddiff->GetRMS()>1.5 )
 245                   GetMeanAndSigma(cfddiff, meandiff, sigmadiff);
 246                 if(cfddiff->GetRMS()<=1.5)
 247                   {
 248                     meandiff = cfddiff->GetMean();
 249                     sigmadiff = cfddiff->GetRMS();
 250                   }
 251                 Int_t   maxBin = cfddiff->GetMaximumBin();
 252                 Double_t  meanEstimate = cfddiff->GetBinCenter( maxBin);
 253                 if(TMath::Abs(meanEstimate - meandiff) > 20 ) meandiff = meanEstimate;
 254               }
 255               else
 256                 {
 257                   AliWarning(Form(" Not  enouph data in PMT %i- PMT1:  %i ", i, nent));
 258                   SetTimeEq(i,timecdb[i]);
 259                   SetTimeEqRms(i,0);
 260
 261                 }
 262             }
 263
 264             if(!cfdtime ) {
 265               AliWarning(Form("no  histograms collected by pass0 for time channel %i", i));
 266               SetTimeEq(i, cfdvalue[i]);
 267               SetTimeEqRms(i, 0);
 268             }
 269             if(cfdtime) {
 270               nent = Int_t(cfdtime->GetEntries());
 271               if(nent>100 )  { //!!!!!
 272                 if(cfdtime->GetRMS()>1.5 )
 273                   GetMeanAndSigma(cfdtime,meancfdtime, sigmacfdtime);
 274                 if(cfdtime->GetRMS()<=1.5)
 275                   {
 276                     meancfdtime = cfdtime->GetMean();
 277                     sigmacfdtime=cfdtime->GetRMS();
 278                 }
 279                 Int_t   maxBin = cfdtime->GetMaximumBin();
 280                 Double_t  meanEstimate = cfdtime->GetBinCenter( maxBin);
 281                 if(TMath::Abs(meanEstimate - meancfdtime) > 20 ) meancfdtime = meanEstimate;
 282             }
 283             else
 284               {
 285                 AliWarning(Form(" Not  enouph data in PMT in CFD peak %i - %i ", i, nent));
 286                 SetTimeEq(i, cfdvalue[i]);
 287                 SetTimeEqRms(i, 0);
 288               }
 289           }
 290
 291           SetTimeEq(i,timecdb[i] + meandiff);
 292           SetTimeEqRms(i,sigmadiff);
 293           SetCFDvalue(i,0, meancfdtime );
 294           if (cfddiff) cfddiff->Reset();
 295           if (cfdtime) cfdtime->Reset();
 296           } //bad pmt
 297         }
 298
 299       gFile->Close();
 300       delete gFile;
 301
 302     }
 303     return ok;
 304    }
 305
 306 //________________________________________________________________________
 307 void AliT0CalibTimeEq::GetMeanAndSigma(TH1F* hist,  Float_t &mean, Float_t &sigma) {
 308
 309   const double window = 2.;  //fit window
 310
 311   double meanEstimate, sigmaEstimate;
 312   int maxBin;
 313   maxBin        =  hist->GetMaximumBin(); //position of maximum
 314   meanEstimate  =  hist->GetBinCenter( maxBin); // mean of gaussian sitting in maximum
 315   // sigmaEstimate = hist->GetRMS();
 316   sigmaEstimate = 10;
 317   TF1* fit= new TF1("fit","gaus", meanEstimate - window*sigmaEstimate, meanEstimate + window*sigmaEstimate);
 318   fit->SetParameters(hist->GetBinContent(maxBin), meanEstimate, sigmaEstimate);
 319   hist->Fit("fit","RQ","Q");
 320
 321   mean  = (Float_t) fit->GetParameter(1);
 322   sigma = (Float_t) fit->GetParameter(2);
 323
 324   delete fit;
 325 }
 326
 327