ITS/AliITSOnlineSDDInjectors.cxx

   1 /**************************************************************************
   2  * Copyright(c) 2007-2009, ALICE Experiment at CERN, All rights reserved. *
   3  *                                                                        *
   4  * Author: The ALICE Off-line Project.                                    *
   5  * Contributors are mentioned in the code where appropriate.              *
   6  *                                                                        *
   7  * Permission to use, copy, modify and distribute this software and its   *
   8  * documentation strictly for non-commercial purposes is hereby granted   *
   9  * without fee, provided that the above copyright notice appears in all   *
  10  * copies and that both the copyright notice and this permission notice   *
  11  * appear in the supporting documentation. The authors make no claims     *
  12  * about the suitability of this software for any purpose. It is          *
  13  * provided "as is" without express or implied warranty.                  *
  14  **************************************************************************/
  15 #include "AliITSOnlineSDDInjectors.h"
  16 #include <TH2F.h>
  17 #include <TGraphErrors.h>
  18 #include <TMath.h>
  19
  20 /* $Id$ */
  21
  22 ///////////////////////////////////////////////////////////////////
  23 //                                                               //
  24 // Implementation of the class used for SDD injector analysis    //
  25 // Origin: F.Prino, Torino, prino@to.infn.it                     //
  26 //                                                               //
  27 ///////////////////////////////////////////////////////////////////
  28
  29 ClassImp(AliITSOnlineSDDInjectors)
  30
  31 const Float_t AliITSOnlineSDDInjectors::fgkSaturation = 1008.;
  32 const Float_t AliITSOnlineSDDInjectors::fgkDefaultLThreshold = 5.;
  33 const Float_t AliITSOnlineSDDInjectors::fgkDefaultHThreshold = 25.;
  34 const Float_t AliITSOnlineSDDInjectors::fgkDefaultMinSpeed = 5.5;
  35 const Float_t AliITSOnlineSDDInjectors::fgkDefaultMaxSpeed = 9.0;
  36 const Float_t AliITSOnlineSDDInjectors::fgkDefaultMaxErr = 1.5;
  37 const Int_t   AliITSOnlineSDDInjectors::fgkDefaultPolOrder = 3;
  38 const Float_t AliITSOnlineSDDInjectors::fgkDefaultTimeStep = 50.;
  39 const UShort_t AliITSOnlineSDDInjectors::fgkDefaultTbMin[kInjLines] = {10,50,100};
  40 const UShort_t AliITSOnlineSDDInjectors::fgkDefaultTbMax[kInjLines] = {20,70,120};
  41
  42 //______________________________________________________________________
  43 AliITSOnlineSDDInjectors::AliITSOnlineSDDInjectors():AliITSOnlineSDD(),fHisto(),fTbZero(0.),fRMSTbZero(0.),fParam(),fPolOrder(0),fMinDriftSpeed(0.),fMaxDriftSpeed(0.),fMaxDriftSpeedErr(0.),fLowThreshold(0.),fHighThreshold(0.),fFirstPadForFit(0),fLastPadForFit(0),fPadStatusCutForFit(0),fTimeStep(0.),fUseTimeZeroSignal(kFALSE)
  44 {
  45   // default constructor
  46   SetPositions();
  47   SetDefaults();
  48   SetTimeStep(fgkDefaultTimeStep);
  49 }
  50 //______________________________________________________________________
  51 AliITSOnlineSDDInjectors::AliITSOnlineSDDInjectors(Int_t nddl, Int_t ncarlos, Int_t sid):AliITSOnlineSDD(nddl,ncarlos,sid),fHisto(),fTbZero(0.),fRMSTbZero(0.),fParam(),fPolOrder(0),fMinDriftSpeed(0.),fMaxDriftSpeed(0.),fMaxDriftSpeedErr(0.),fLowThreshold(0.),fHighThreshold(0.),fFirstPadForFit(0),fLastPadForFit(0),fPadStatusCutForFit(0),fTimeStep(0.),fUseTimeZeroSignal(kFALSE)
  52 {
  53 // standard constructor
  54   SetPositions();
  55   SetDefaults();
  56   SetTimeStep(fgkDefaultTimeStep);
  57 }
  58 //______________________________________________________________________
  59 AliITSOnlineSDDInjectors::~AliITSOnlineSDDInjectors(){
  60   // Destructor
  61   // fHisto should not be deleted here because it points to an histo created
  62   // by the external code which calls the method AnalyzeEvent
  63   // if(fHisto) delete fHisto;
  64   if(fParam) delete [] fParam;
  65 }
  66 //______________________________________________________________________
  67 void AliITSOnlineSDDInjectors::SetDefaults(){
  68   for(Int_t i=0;i<kInjLines;i++)
  69     SetInjLineRange(i,fgkDefaultTbMin[i],fgkDefaultTbMax[i]);
  70   SetThresholds(fgkDefaultLThreshold,fgkDefaultHThreshold);
  71   SetPolOrder(fgkDefaultPolOrder);
  72   SetMinDriftSpeed(fgkDefaultMinSpeed);
  73   SetMaxDriftSpeed(fgkDefaultMaxSpeed);
  74   SetMaxDriftSpeedErr(fgkDefaultMaxErr);
  75   SetFitLimits(1,kInjPads-2); // exclude first and last pad
  76   SetPadStatusCutForFit();
  77 }
  78 //______________________________________________________________________
  79 void AliITSOnlineSDDInjectors::SetPositions(){
  80   //
  81   Float_t xLinFromCenterUm[kInjLines]={31860.,17460.,660.};
  82   Float_t xAnodeFromCenterUm=35085;
  83   for(Int_t i=0;i<kInjLines;i++){
  84     fPosition[i]=xAnodeFromCenterUm-xLinFromCenterUm[i];
  85     fPosition[i]/=10000.; // from microns to cm
  86   }
  87 }
  88 //______________________________________________________________________
  89 void AliITSOnlineSDDInjectors::Reset(){
  90   //
  91   for(Int_t i=0;i<kInjPads;i++){
  92     fDriftSpeed[i]=0.;
  93     fDriftSpeedErr[i]=0.;
  94   }
  95   for(Int_t i=0;i<kInjPads;i++){
  96     for(Int_t j=0;j<kInjLines;j++){
  97       fGoodInj[i][j]=0;
  98       fCentroid[i][j]=0.;
  99       fRMSCentroid[i][j]=0.;
 100     }
 101   }
 102 }
 103 //______________________________________________________________________
 104 void AliITSOnlineSDDInjectors::AnalyzeEvent(TH2F* his){
 105   //
 106   Reset();
 107   fHisto=his;
 108   FindGoodInjectors();
 109   FindCentroids();
 110   CalcTimeBinZero();
 111   for(Int_t j=0;j<kInjPads;j++) CalcDriftSpeed(j);
 112   FitDriftSpeedVsAnode();
 113 }
 114 //______________________________________________________________________
 115 TGraphErrors* AliITSOnlineSDDInjectors::GetTimeVsDistGraph(Int_t jpad) const{
 116   //
 117   const Int_t kPts=kInjLines+1;
 118   Float_t x[kPts],y[kPts],ex[kPts],ey[kPts];
 119   x[0]=0.;
 120   ex[0]=0.;
 121   y[0]=fTbZero;
 122   ey[0]=0.;
 123   for(Int_t i=0;i<kInjLines;i++){
 124     x[i+1]=fPosition[i];
 125     ex[i+1]=0.;
 126     y[i+1]=fCentroid[jpad][i];
 127     ey[i+1]=fRMSCentroid[jpad][i];
 128   }
 129   TGraphErrors *g=new TGraphErrors(4,x,y,ex,ey);
 130   return g;
 131 }
 132
 133 //______________________________________________________________________
 134 TGraphErrors* AliITSOnlineSDDInjectors::GetDriftSpeedGraph() const{
 135   //
 136   Int_t ipt=0;
 137   TGraphErrors *g=new TGraphErrors(0);
 138   for(Int_t i=0;i<kInjPads;i++){
 139     if(fDriftSpeed[i]>0){
 140       g->SetPoint(ipt,GetAnodeNumber(i),fDriftSpeed[i]);
 141       g->SetPointError(ipt,0,fDriftSpeedErr[i]);
 142       ipt++;
 143     }
 144   }
 145   return g;
 146 }
 147 //______________________________________________________________________
 148 TGraphErrors* AliITSOnlineSDDInjectors::GetSelectedDriftSpeedGraph(Int_t minAcceptStatus) const{
 149   // TGraphErrors with only pads with status of injector >= minAcceptStatus
 150   Int_t ipt=0;
 151   TGraphErrors *g=new TGraphErrors(0);
 152   for(Int_t i=0;i<kInjPads;i++){
 153     Int_t padStatus = GetInjPadStatus(i);
 154     if(fDriftSpeed[i]>0 && padStatus >= minAcceptStatus ){
 155       g->SetPoint(ipt,GetAnodeNumber(i),fDriftSpeed[i]);
 156       g->SetPointError(ipt,0,fDriftSpeedErr[i]);
 157       ipt++;
 158     }
 159   }
 160   return g;
 161 }
 162 //______________________________________________________________________
 163 void AliITSOnlineSDDInjectors::CalcTimeBinZero(){
 164   // Get time zero from trigger signal
 165   Float_t tzero=0.,intCont=0.,rmsPeak=0.;
 166   Bool_t isTbUsed[256];
 167   Int_t nTbUsed=0;
 168   for(Int_t i=0;i<256;i++) isTbUsed[i]=0;
 169   for(Int_t ian=0;ian<fgkNAnodes;ian++){
 170     for(Int_t itb=1;itb<fTbMin[0];itb++){
 171       Float_t cont=fHisto->GetBinContent(itb,ian+1);
 172       Float_t contm1=fHisto->GetBinContent(itb+1,ian+1);
 173       Float_t contp1=fHisto->GetBinContent(itb-1,ian+1);
 174       if(cont>fLowThreshold){
 175         if(contm1>fHighThreshold || cont>fHighThreshold || contp1>fHighThreshold){
 176           tzero+=cont*float(itb);
 177           rmsPeak+=cont*float(itb)*float(itb);
 178           intCont+=cont;
 179           if(!isTbUsed[itb]){
 180             isTbUsed[itb]=1;
 181             ++nTbUsed;
 182           }
 183         }
 184       }
 185     }
 186   }
 187   if(intCont>0){
 188     fTbZero=tzero/intCont;
 189     fRMSTbZero=TMath::Sqrt(rmsPeak/intCont-fTbZero*fTbZero);
 190   }
 191   if(nTbUsed==1) fRMSTbZero=0.5;
 192 }
 193 //______________________________________________________________________
 194 void AliITSOnlineSDDInjectors::FitDriftSpeedVsAnode(){
 195   // fits the anode dependence of drift speed with a polynomial function
 196   const Int_t kNn=fPolOrder+1;
 197   Float_t **mat = new Float_t*[kNn];
 198   for(Int_t i=0; i < kNn; i++) mat[i] = new Float_t[kNn];
 199   Float_t *vect = new Float_t[kNn];
 200
 201   for(Int_t k1=0;k1<kNn;k1++){
 202     vect[k1]=0;
 203     for(Int_t k2=0;k2<kNn;k2++){
 204       mat[k1][k2]=0;
 205     }
 206   }
 207   Int_t npts = 0;
 208   for(Int_t k1=0;k1<kNn;k1++){
 209     for(Int_t jpad=fFirstPadForFit; jpad<=fLastPadForFit; jpad++){
 210       Float_t x=(Float_t)GetAnodeNumber(jpad);
 211       if(fDriftSpeed[jpad]>0 && GetInjPadStatus(jpad)>fPadStatusCutForFit){
 212           vect[k1]+=fDriftSpeed[jpad]*TMath::Power(x,k1)/TMath::Power(fDriftSpeedErr[jpad],2);
 213           if(k1==0) npts++;
 214           for(Int_t k2=0;k2<kNn;k2++){
 215             mat[k1][k2]+=TMath::Power(x,k1+k2)/TMath::Power(fDriftSpeedErr[jpad],2);
 216           }
 217       }
 218     }
 219   }
 220   if(npts<fPolOrder+1){
 221     if(fParam) delete [] fParam;
 222     fParam=new Float_t[kNn];
 223     for(Int_t i=0; i<kNn;i++)fParam[i]=0;
 224   }else{
 225     Int_t *iPivot = new Int_t[kNn];
 226     Int_t *indxR = new Int_t[kNn];
 227     Int_t *indxC = new Int_t[kNn];
 228     for(Int_t i=0;i<kNn;i++) iPivot[i]=0;
 229     Int_t iCol=-1,iRow=-1;
 230     for(Int_t i=0;i<kNn;i++){
 231       Float_t big=0.;
 232       for(Int_t j=0;j<kNn;j++){
 233         if(iPivot[j]!=1){
 234           for(Int_t k=0;k<kNn;k++){
 235             if(iPivot[k]==0){
 236               if(TMath::Abs(mat[j][k])>=big){
 237                 big=TMath::Abs(mat[j][k]);
 238                 iRow=j;
 239                 iCol=k;
 240               }
 241             }
 242           }
 243         }
 244       }
 245       iPivot[iCol]++;
 246       Float_t aux;
 247       if(iRow!=iCol){
 248         for(Int_t l=0;l<kNn;l++){
 249           aux=mat[iRow][l];
 250           mat[iRow][l]=mat[iCol][l];
 251           mat[iCol][l]=aux;
 252         }
 253         aux=vect[iRow];
 254         vect[iRow]=vect[iCol];
 255         vect[iCol]=aux;
 256       }
 257       indxR[i]=iRow;
 258       indxC[i]=iCol;
 259       if(mat[iCol][iCol]==0) break;
 260       Float_t pivinv=1./mat[iCol][iCol];
 261       mat[iCol][iCol]=1;
 262       for(Int_t l=0;l<kNn;l++) mat[iCol][l]*=pivinv;
 263       vect[iCol]*=pivinv;
 264       for(Int_t m=0;m<kNn;m++){
 265         if(m!=iCol){
 266           aux=mat[m][iCol];
 267           mat[m][iCol]=0;
 268           for(Int_t n=0;n<kNn;n++) mat[m][n]-=mat[iCol][n]*aux;
 269           vect[m]-=vect[iCol]*aux;
 270         }
 271       }
 272     }
 273     delete [] iPivot;
 274     delete [] indxR;
 275     delete [] indxC;
 276
 277
 278     if(fParam) delete [] fParam;
 279     fParam=new Float_t[kNn];
 280     for(Int_t i=0; i<kNn;i++)fParam[i]=vect[i];
 281   }
 282
 283   for(Int_t i=0; i < kNn; i++) delete [] mat[i];
 284   delete [] mat;
 285   delete [] vect;
 286 }
 287 //______________________________________________________________________
 288 void AliITSOnlineSDDInjectors::CalcDriftSpeed(Int_t jpad){
 289   //
 290   Float_t sumY=0,sumX=0,sumXX=0,sumYY=0.,sumXY=0,sumWEI=0.;
 291   Int_t npt=0;
 292   Float_t y[kInjLines],ey[kInjLines];
 293   Float_t tzero=0,erry=0;
 294   for(Int_t i=0;i<kInjLines;i++){
 295     y[i]=fCentroid[jpad][i];
 296     ey[i]=fRMSCentroid[jpad][i];
 297   }
 298   for(Int_t i=0;i<kInjLines;i++){
 299     if(fGoodInj[jpad][i] && ey[i]!=0){
 300       sumY+=y[i]/ey[i]/ey[i];
 301       sumX+=fPosition[i]/ey[i]/ey[i];
 302       sumXX+=fPosition[i]*fPosition[i]/ey[i]/ey[i];
 303       sumYY+=y[i]*y[i]/ey[i]/ey[i];
 304       sumXY+=fPosition[i]*y[i]/ey[i]/ey[i];
 305       sumWEI+=1./ey[i]/ey[i];
 306       tzero=fTbZero/ey[i]/ey[i];
 307       erry=ey[i]/ey[i]/ey[i];
 308       npt++;
 309     }
 310   }
 311   Float_t slope=0.,eslope=0.;
 312   if(npt==1){
 313     slope=(sumY-tzero)/sumX;
 314     eslope=erry/sumX;
 315   }
 316   if(npt>1){
 317     if(fUseTimeZeroSignal){
 318       sumY+=fTbZero/fRMSTbZero/fRMSTbZero;
 319       sumX+=0.;
 320       sumXX+=0.;
 321       sumYY+=fTbZero*fTbZero/fRMSTbZero/fRMSTbZero;
 322       sumXY+=0.;
 323       sumWEI+=1./fRMSTbZero/fRMSTbZero;
 324     }
 325     slope=(sumWEI*sumXY-sumY*sumX)/(sumWEI*sumXX-sumX*sumX);
 326     eslope=TMath::Sqrt(sumWEI/(sumWEI*sumXX-sumX*sumX));
 327   }
 328
 329   Float_t vel=0,evel=0;
 330   if(slope!=0. && fTimeStep>0.){
 331     vel=1./slope*10000./fTimeStep;// micron/ns
 332     evel=eslope/slope/slope*10000./fTimeStep;// micron/ns
 333   }
 334   if(vel>fMaxDriftSpeed||vel<fMinDriftSpeed || evel>fMaxDriftSpeedErr){
 335     vel=0.;
 336     evel=0.;
 337   }
 338   fDriftSpeed[jpad]=vel;
 339   fDriftSpeedErr[jpad]=evel;
 340 }
 341 //______________________________________________________________________
 342 Int_t AliITSOnlineSDDInjectors::GetAnodeNumber(Int_t iInjPad) const{
 343   // Injectors location along anodes:
 344   // Side left  (UP)   - channel 0: injectors on anodes 0,7,15,...,247,255
 345   // Side right (DOWN) - channel 1: injectors on anodes 0,8,16,...,248,255
 346   Int_t ian=-1;
 347   if(iInjPad>=kInjPads) return ian;
 348   if(fSide==1){  // right side
 349     ian=iInjPad*8;
 350     if(iInjPad==32) ian--;
 351   }else{         // left side
 352     ian=iInjPad*8-1;
 353     if(iInjPad==0) ian=0;
 354   }
 355   return ian;
 356 }
 357 //______________________________________________________________________
 358 Int_t AliITSOnlineSDDInjectors::GetInjPadNumberFromAnode(Int_t nAnode) const{
 359   //
 360   Int_t iInjPad=-1;
 361   if(fSide==1){  // right side
 362     if(nAnode%8==0) iInjPad=nAnode/8;
 363     if(nAnode==255) iInjPad=32;
 364   }else{         // left side
 365     if(nAnode%8==7) iInjPad=1+nAnode/8;
 366     if(nAnode==0) iInjPad=0;
 367   }
 368   if(nAnode>=256) iInjPad=-1;
 369   return iInjPad;
 370 }
 371 //______________________________________________________________________
 372 Int_t AliITSOnlineSDDInjectors::GetInjPadStatus(Int_t jpad) const{
 373   // returns an integer value with status of injector lines for given pad/anode
 374   // status=7  -->  111  all injector are good
 375   // status=6  -->  110  1st line (close to anodes) is bad, other two are good
 376   // ....
 377   // status=1  -->  001  only 1st line (close to anodes) good
 378   // status=0  -->  000  all lines are bad
 379   Int_t istatus=0;
 380   if(jpad>=0 && jpad<kInjPads){
 381     for(Int_t jlin=0;jlin<kInjLines;jlin++) istatus+=fGoodInj[jpad][jlin]<<jlin;
 382   }
 383   return istatus;
 384 }
 385 //______________________________________________________________________
 386 void AliITSOnlineSDDInjectors::FindGoodInjectors(){
 387   //
 388   for(Int_t jpad=0;jpad<kInjPads;jpad++){
 389     Int_t ian=GetAnodeNumber(jpad);
 390     for(Int_t jlin=0;jlin<kInjLines;jlin++){
 391       for(Int_t jjj=fTbMin[jlin];jjj<fTbMax[jlin];jjj++){
 392         Float_t c1=fHisto->GetBinContent(jjj,ian+1);
 393         Float_t c2=fHisto->GetBinContent(jjj+1,ian+1);
 394         //      Float_t c3=fHisto->GetBinContent(jjj+2,ian+1);
 395         if(c1>fLowThreshold && c2>fLowThreshold){
 396           if(c1>fHighThreshold || c2>fHighThreshold){
 397             fGoodInj[jpad][jlin]=1;
 398             break;
 399           }
 400         }
 401       }
 402     }
 403   }
 404 }
 405 //______________________________________________________________________
 406 void AliITSOnlineSDDInjectors::FindCentroids(){
 407   //
 408   for(Int_t jpad=0;jpad<kInjPads;jpad++){
 409     Int_t ian=GetAnodeNumber(jpad);
 410     for(Int_t jlin=0;jlin<kInjLines;jlin++){
 411       if(!fGoodInj[jpad][jlin]) continue;
 412       Float_t maxcont=0;
 413       Int_t ilmax=-1;
 414       for(Int_t jjj=fTbMin[jlin];jjj<fTbMax[jlin];jjj++){
 415         Float_t cont=fHisto->GetBinContent(jjj,ian+1);
 416         if(cont>maxcont){
 417           maxcont=cont;
 418           ilmax=jjj;
 419         }
 420       }
 421       Float_t intCont=0;
 422       Int_t jjj=ilmax;
 423       while(1){
 424         Float_t cont=fHisto->GetBinContent(jjj,ian+1);
 425         if(cont<fLowThreshold) break;
 426         if(cont<fgkSaturation){
 427           fCentroid[jpad][jlin]+=cont*(Float_t)jjj;
 428           fRMSCentroid[jpad][jlin]+=cont*(Float_t)jjj*(Float_t)jjj;
 429           intCont+=cont;
 430         }
 431         jjj--;
 432       }
 433       jjj=ilmax+1;
 434       while(1){
 435         Float_t cont=fHisto->GetBinContent(jjj,ian+1);
 436         if(cont<fLowThreshold) break;
 437         if(cont<fgkSaturation){
 438           fCentroid[jpad][jlin]+=cont*float(jjj);
 439           fRMSCentroid[jpad][jlin]+=cont*(Float_t)jjj*(Float_t)jjj;
 440           intCont+=cont;
 441         }
 442         jjj++;
 443       }
 444       if(intCont>0){
 445         fCentroid[jpad][jlin]/=intCont;
 446         fRMSCentroid[jpad][jlin]=TMath::Sqrt(fRMSCentroid[jpad][jlin]/intCont-fCentroid[jpad][jlin]*fCentroid[jpad][jlin]);
 447       }
 448       else{
 449         fCentroid[jpad][jlin]=0.;
 450         fRMSCentroid[jpad][jlin]=0.;
 451         fGoodInj[jpad][jlin]=0;
 452       }
 453       if(fRMSCentroid[jpad][jlin]==0) fGoodInj[jpad][jlin]=0;
 454     }
 455   }
 456 }
 457 //______________________________________________________________________
 458 void AliITSOnlineSDDInjectors::PrintInjectorStatus(){
 459   //
 460   for(Int_t jpad=0;jpad<kInjPads;jpad++){
 461     printf("Line%d-Anode%d: %d %d %d\n",jpad,GetAnodeNumber(jpad),fGoodInj[jpad][0],fGoodInj[jpad][1],fGoodInj[jpad][2]);
 462   }
 463 }
 464 //______________________________________________________________________
 465 void AliITSOnlineSDDInjectors::PrintCentroids(){
 466   //
 467   for(Int_t jpad=0;jpad<kInjPads;jpad++){
 468     printf("Line%d-Anode%d: %f+-%f %f+-%f %f+-%f\n",jpad,GetAnodeNumber(jpad),fCentroid[jpad][0],fRMSCentroid[jpad][0],fCentroid[jpad][1],fRMSCentroid[jpad][1],fCentroid[jpad][2],fRMSCentroid[jpad][2]);
 469   }
 470 }
 471 //______________________________________________________________________
 472 void AliITSOnlineSDDInjectors::WriteToASCII(Int_t evNumb, UInt_t timeStamp, Int_t optAppend){
 473   //
 474   Char_t outfilnam[100];
 475   sprintf(outfilnam,"SDDinj_ddl%02dc%02d_sid%d.data",fDDL,fCarlos,fSide);
 476   FILE* outf;
 477   if(optAppend==0){
 478     outf=fopen(outfilnam,"w");
 479     fprintf(outf,"%d\n",fPolOrder);
 480   }
 481   else outf=fopen(outfilnam,"a");
 482   fprintf(outf,"%d   %d   ",evNumb,timeStamp);
 483   for(Int_t ic=0;ic<fPolOrder+1;ic++){
 484     fprintf(outf,"%G ",fParam[ic]);
 485   }
 486   fprintf(outf,"\n");
 487   fclose(outf);
 488 }