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++)
 105     printf(" CFD  %f diff %f  \n",fCFDvalue[i][0],fTimeEq[i]);
 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   Int_t okdiff=0;
 118   Int_t oktime=0;
 119   Bool_t ok=false;
 120   gFile = TFile::Open(filePhys);
 121   if(!gFile) {
 122     AliError("No input PHYS data found ");
 123   }
 124   else
 125     {
 126       ok=true;
 127       for (Int_t i=0; i<24; i++)
 128         {
 129
 130           meandiff = sigmadiff =  meanver = meancfdtime = sigmacfdtime =0;
 131           TH1F *cfd = (TH1F*) gFile->Get(Form("CFD1minCFD%d",i+1));
 132           TH1F *cfdtime = (TH1F*) gFile->Get(Form("CFD%d",i+1));
 133           if(!cfd) {
 134             AliWarning(Form("no Diff histograms collected by PHYS DA for channel %i", i));
 135             okdiff++;
 136             if(okdiff<4) {
 137               meandiff = 0;
 138               sigmadiff = 0;
 139             }
 140             else
 141               ok = false;
 142           }
 143           if(!cfdtime) {
 144             AliWarning(Form("no CFD histograms collected by PHYS DA for channel %i", i));
 145             oktime++;
 146             if(oktime<4) {
 147               meancfdtime = 0;
 148             }
 149             else
 150               ok = false;
 151           }
 152           if(cfd) {
 153             nent = Int_t(cfd->GetEntries());
 154             if( nent<=50) {
 155               okdiff++;
 156               //              printf(" pmt %i nent %i cfd->GetRMS() %f cfd->GetMean() %f \n",
 157               //     i, nent, cfd->GetRMS(), cfd->GetMean() );
 158               if(okdiff<4) {
 159                 meandiff = 0;
 160                 sigmadiff = 0;
 161               }
 162               else
 163                 {
 164                   // printf(" OK fsle:: pmt %i nent %i cfd->GetRMS() %f cfd->GetMean() %f \n",
 165                   // i, nent, cfd->GetRMS(), cfd->GetMean() );
 166                   AliWarning(Form(" Not  enouph data in PMT %i- PMT1:  %i ", i, nent));
 167                   ok = false;
 168                 }
 169             }
 170             if(nent>50)  {
 171               if(cfd->GetRMS()>1.5 )
 172                 GetMeanAndSigma(cfd, meandiff, sigmadiff);
 173               if(cfd->GetRMS()<=1.5)
 174                 {
 175                   meandiff = cfd->GetMean();
 176                   sigmadiff=cfd->GetRMS();
 177                 }
 178               Int_t   maxBin = cfd->GetMaximumBin();
 179               Double_t  meanEstimate = cfd->GetBinCenter( maxBin);
 180               if(TMath::Abs(meanEstimate - meandiff) > 20 ) meandiff = meanEstimate;
 181             }
 182           }
 183
 184           if(cfdtime) {
 185             nent = Int_t(cfdtime->GetEntries());
 186             if( nent<=50 ) {
 187               oktime++;
 188               if(oktime<4) {
 189                 meancfdtime = 0;
 190               }
 191               else
 192                 {
 193                   AliWarning(Form(" Not  enouph data in PMT %i:  %i ", i, nent));
 194                   ok = false;
 195                 }
 196             }
 197             if(nent > 50  )  { //!!!!!!!!!!
 198               if(cfdtime->GetRMS()>1.5 )
 199                 GetMeanAndSigma(cfdtime,meancfdtime, sigmacfdtime);
 200               if(cfdtime->GetRMS()<=1.5)
 201                 {
 202                   if(cfdtime->GetRMS()==0 ||cfdtime->GetMean()==0 ) {
 203                     ok = false;
 204                   }
 205                   meancfdtime = cfdtime->GetMean();
 206                   sigmacfdtime = cfdtime->GetRMS();
 207                 }
 208               Int_t   maxBin = cfdtime->GetMaximumBin();
 209               Double_t  meanEstimate = cfdtime->GetBinCenter( maxBin);
 210               if(TMath::Abs(meanEstimate - meancfdtime) > 20 ) meancfdtime = meanEstimate;
 211             }
 212           }
 213           SetTimeEq(i,meandiff);
 214           SetTimeEqRms(i,sigmadiff);
 215           SetCFDvalue(i,0,meancfdtime);
 216           if (cfd) delete cfd;
 217           if (cfdtime) delete cfdtime;
 218         }
 219       TH1F *ver = (TH1F*) gFile->Get("hVertex");
 220       if(ver) {
 221         meanver = ver->GetMean();
 222         rmsver = ver->GetRMS();
 223       }
 224       SetMeanVertex(meanver);
 225       SetRmsVertex(rmsver);
 226
 227       gFile->Close();
 228       delete gFile;
 229
 230     }
 231     return ok;
 232 }
 233
 234 //________________________________________________________________
 235   Int_t AliT0CalibTimeEq::ComputeOfflineParams(const char* filePhys, Float_t *timecdb, Float_t *cfdvalue, Int_t badpmt)
 236 {
 237   // fStatus implementation:
 238   //ok means
 239   // 1000  - can not open file
 240   // for timediff
 241   // 1-24  no histograms with time diff for more than okdiff channenls
 242   // 100 >3 histos are empty
 243   // - 1 if less 3 channels are empty ;for these channels OCDB value will be written back WARNING
 244   // -2  low statistics in few channels; for these channels OCDB value will be written back WARNING
 245   // for cfd
 246   // 200 >3 histos are empty
 247   // -11 if less 3 channels are empty ;for these channels OCDB value will be written back WARNING
 248   // -22  low statistics in few channels; for these channels OCDB value will be written back WARNING
 249    //
 250   // compute offline equalized time
 251   Float_t meandiff, sigmadiff, meanver, meancfdtime, sigmacfdtime;
 252   meandiff = sigmadiff =  meanver = meancfdtime = sigmacfdtime =0;
 253   Int_t nent=0;
 254   Int_t ok = 0;
 255   Int_t okdiff=0;
 256   Int_t okcfd=0;
 257   TH1F *cfddiff = NULL;
 258   TH1F *cfdtime = NULL;
 259   TObjArray * TzeroObj = NULL;
 260
 261   gFile = TFile::Open(filePhys);
 262   if(!gFile) {
 263     AliError("No input PHYS data found ");
 264     ok = 1000;
 265     return ok;
 266   }
 267   else
 268     {
 269       meandiff = sigmadiff =  meanver = meancfdtime = sigmacfdtime =0;
 270       TDirectory *dr = (TDirectory*) gFile->Get("T0Calib");
 271       if (dr)   TzeroObj = (TObjArray*) dr->Get("T0Calib");
 272       for (Int_t i=0; i<24; i++)
 273         {
 274           if (i != badpmt) {
 275             if(TzeroObj) {
 276               cfddiff = (TH1F*)TzeroObj->FindObject(Form("CFD1minCFD%d",i+1));
 277               cfdtime = (TH1F*)TzeroObj->FindObject(Form("CFD%d",i+1));
 278             }
 279             else
 280               {
 281                 cfddiff = (TH1F*)gFile->Get(Form("CFD1minCFD%d",i+1));
 282                 cfdtime = (TH1F*)gFile->Get(Form("CFD%d",i+1));
 283
 284               }
 285             if(!cfddiff ) {
 286               AliWarning(Form("no  histograms collected by pass0 for diff channel %i", i));
 287               okdiff++;
 288               if(okdiff<4) {
 289                 meandiff = timecdb[i];
 290                 sigmadiff = 0;
 291                 ok = -1;
 292               }
 293               else
 294                 return 100+okdiff;
 295             }
 296             if(cfddiff) {
 297               nent = Int_t(cfddiff->GetEntries());
 298               if ( nent == 0) {
 299                 okdiff++;
 300                 if(okdiff<4) {
 301                   meandiff = timecdb[i];
 302                   sigmadiff = 0;
 303                   ok = - 1;
 304                 }
 305                 else
 306                   return 100;
 307               }
 308               if(nent<100 && nent>0) { //!!!!!
 309                 AliWarning(Form(" Not  enouph data in PMT %i- PMT1:  %i ", i, nent));
 310                 ok=-2;
 311                 meandiff = timecdb[i];
 312                 sigmadiff = 0;
 313               }
 314               if(nent>100 )  { //!!!!!
 315                 {
 316                   if(cfddiff->GetRMS()>1.5 )
 317                     GetMeanAndSigma(cfddiff, meandiff, sigmadiff);
 318                   if(cfddiff->GetRMS()<=1.5)
 319                     {
 320                       meandiff = cfddiff->GetMean();
 321                       sigmadiff = cfddiff->GetRMS();
 322                     }
 323                   Int_t   maxBin = cfddiff->GetMaximumBin();
 324                   Double_t  meanEstimate = cfddiff->GetBinCenter( maxBin);
 325                   if(TMath::Abs(meanEstimate - meandiff) > 20 ) meandiff = meanEstimate;
 326                 }
 327               }
 328             }
 329             if(!cfdtime ) {
 330               AliWarning(Form("no  histograms collected by pass0 for time channel %i", i));
 331               meancfdtime = cfdvalue[i];
 332               okcfd++;
 333               if(okcfd<4) {
 334                 meancfdtime = cfdvalue[i];
 335                 ok = -11;
 336               }
 337               else {
 338                 AliError(Form("no  histograms collected by pass0 for time %i channels ", okcfd));
 339                 return 200;
 340               }
 341             }
 342             if(cfdtime) {
 343               nent = Int_t(cfdtime->GetEntries());
 344               if (nent == 0 ||
 345                   (cfdtime->GetRMS() == 0 || cfdtime->GetMean() ==0 ) )
 346                 {
 347                   okcfd++;
 348                   if(okcfd<4) {
 349                     meancfdtime = cfdvalue[i];
 350                     ok = -11;
 351                     printf("!!!!bad data:: pmt %i nent%i RMS %f mean %f cdbtime %f \n",
 352                            i, nent, cfdtime->GetRMS(), cfdtime->GetMean(),  fCFDvalue[i][0]);
 353                   }
 354                   else
 355                     {
 356                     printf("!!!!fatal data:: pmt %i nent%i RMS %f mean %f cdbtime %f \n",
 357                            i, nent, cfdtime->GetRMS(), cfdtime->GetMean(),  fCFDvalue[i][0]);
 358                       AliError(Form(" histograms collected by pass0 for time %i channels are empty", okcfd));
 359                       return 200;
 360                     }
 361                 }
 362
 363
 364               if(nent<100 && nent>0 )
 365                 {
 366                 AliWarning(Form(" Not  enouph data in PMT in CFD peak %i - %i ", i, nent));
 367                 if(okcfd<4) {
 368                   meancfdtime = cfdvalue[i];
 369                   ok = -22;
 370                   printf("!!!!low statstics:: pmt %i nent%i RMS %f mean %f cdbtime %f \n",
 371                          i, nent, cfdtime->GetRMS(), cfdtime->GetMean(),  fCFDvalue[i][0]);
 372                 }
 373                 else {
 374                   printf("!!!!low fatal statstics:: pmt %i nent%i RMS %f mean %f cdbtime %f \n",
 375                          i, nent, cfdtime->GetRMS(), cfdtime->GetMean(),  fCFDvalue[i][0]);
 376
 377                   AliError(Form(" Not  enouph data in PMT in CFD peak %i in channels ", okcfd));
 378                   return 200;
 379                 }
 380
 381               }
 382
 383               if( nent>100 && cfdtime->GetRMS() != 0 )    { //!!!!!
 384                 if(cfdtime->GetRMS()>1.5 )
 385                   GetMeanAndSigma(cfdtime,meancfdtime, sigmacfdtime);
 386                 if(cfdtime->GetRMS()<=1.5)
 387                   {
 388                     meancfdtime = cfdtime->GetMean();
 389                     sigmacfdtime=cfdtime->GetRMS();
 390                   }
 391                 Int_t   maxBin = cfdtime->GetMaximumBin();
 392                 Double_t  meanEstimate = cfdtime->GetBinCenter( maxBin);
 393                 if(TMath::Abs(meanEstimate - meancfdtime) > 20 ) meancfdtime = meanEstimate;
 394             }
 395           }
 396
 397           SetTimeEq(i,meandiff);
 398           SetTimeEqRms(i,sigmadiff);
 399           SetCFDvalue(i,0, meancfdtime );
 400           printf(" pmt %i diff %f sigma %f meancfdtime %f cdbtime %f \n",i, meandiff, sigmadiff, meancfdtime, fCFDvalue[i][0]);
 401           if (cfddiff) cfddiff->Reset();
 402           if (cfdtime) cfdtime->Reset();
 403           } //bad pmt
 404         }
 405
 406       gFile->Close();
 407       delete gFile;
 408
 409     }
 410     return ok;
 411    }
 412
 413 //________________________________________________________________________
 414 void AliT0CalibTimeEq::GetMeanAndSigma(TH1F* hist,  Float_t &mean, Float_t &sigma) {
 415
 416   const double window = 2.;  //fit window
 417
 418   double meanEstimate, sigmaEstimate;
 419   int maxBin;
 420   maxBin        =  hist->GetMaximumBin(); //position of maximum
 421   meanEstimate  =  hist->GetBinCenter( maxBin); // mean of gaussian sitting in maximum
 422   // sigmaEstimate = hist->GetRMS();
 423   sigmaEstimate = 10;
 424   TF1* fit= new TF1("fit","gaus", meanEstimate - window*sigmaEstimate, meanEstimate + window*sigmaEstimate);
 425   fit->SetParameters(hist->GetBinContent(maxBin), meanEstimate, sigmaEstimate);
 426   hist->Fit("fit","RQ","Q");
 427
 428   mean  = (Float_t) fit->GetParameter(1);
 429   sigma = (Float_t) fit->GetParameter(2);
 430
 431   delete fit;
 432 }
 433
 434