Correction of additional compilation errors from the first compilation trial.
[u/mrichter/AliRoot.git] / VZERO / AliVZEROCalibData.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: AliVZEROCalibData.cxx,                                            */
17
18 /////////////////////////////////////////////////////////////////////////////
19 //                                                                         //
20 // class for VZERO calibration                                             //
21 //                                                                         //
22 /////////////////////////////////////////////////////////////////////////////
23
24 #include <TMath.h>
25 #include <TObjString.h>
26 #include <TMap.h>
27 #include <TH1F.h>
28 #include <TH2F.h>
29
30 #include "AliDCSValue.h"
31 #include "AliCDBManager.h"
32 #include "AliCDBEntry.h"
33 #include "AliVZEROCalibData.h"
34 #include "AliVZERODataDCS.h"
35 #include "AliVZEROConst.h"
36 #include "AliLog.h"
37
38 ClassImp(AliVZEROCalibData)
39
40 //________________________________________________________________
41 AliVZEROCalibData::AliVZEROCalibData():
42   fLightYields(NULL),
43   fPMGainsA(NULL),
44   fPMGainsB(NULL)
45 {
46   // default constructor
47   
48     for(int t=0; t<64; t++) {
49         fMeanHV[t]      = 100.0;
50         fWidthHV[t]     = 0.0; 
51         fTimeOffset[t]  = 5.0;
52         fTimeGain[t]    = 1.0;
53         fDeadChannel[t]= kFALSE;
54         fDiscriThr[t]  = 2.5;
55     }
56     for(int t=0; t<128; t++) {
57         fPedestal[t]    = 0.0;     
58         fSigma[t]       = 0.0;        
59         fADCmean[t]     = 0.0;      
60         fADCsigma[t]    = 0.0;
61     }
62     for(int i=0; i<kNCIUBoards ;i++) {
63         fTimeResolution[i]  = 25./256.;     // Default time resolution
64         fWidthResolution[i] = 25./64.;     // Default time width resolution
65         fMatchWindow[i] = 4;
66         fSearchWindow[i] = 16;
67         fTriggerCountOffset[i] = 3247;
68         fRollOver[i] = 3563;
69     }
70
71 }
72
73 //________________________________________________________________
74 void AliVZEROCalibData::Reset()
75 {
76   // reset 
77 }
78
79 //________________________________________________________________
80 AliVZEROCalibData::AliVZEROCalibData(const char* name):
81   fLightYields(NULL),
82   fPMGainsA(NULL),
83   fPMGainsB(NULL)
84 {
85   // Constructor
86    TString namst = "Calib_";
87    namst += name;
88    SetName(namst.Data());
89    SetTitle(namst.Data());
90    for(int t=0; t<64; t++) {
91        fMeanHV[t]      = 100.0;
92        fWidthHV[t]     = 0.0; 
93        fTimeOffset[t]  = 5.0;
94        fTimeGain[t]    = 1.0;
95        fDeadChannel[t]= kFALSE;
96        fDiscriThr[t]  = 2.5;
97     }
98    for(int t=0; t<128; t++) {
99        fPedestal[t]    = 0.0;     
100        fSigma[t]       = 0.0;        
101        fADCmean[t]     = 0.0;      
102        fADCsigma[t]    = 0.0;
103    }
104    for(int i=0; i<kNCIUBoards ;i++) {
105        fTimeResolution[i]  = 25./256.;    // Default time resolution in ns / channel
106        fWidthResolution[i] = 25./64.;     // Default time width resolution in ns / channel
107        fMatchWindow[i] = 4;
108        fSearchWindow[i] = 16;
109        fTriggerCountOffset[i] = 3247;
110        fRollOver[i] = 3563;
111    }
112
113 }
114
115 //________________________________________________________________
116 AliVZEROCalibData::AliVZEROCalibData(const AliVZEROCalibData& calibda) :
117   TNamed(calibda),
118   fLightYields(NULL),
119   fPMGainsA(NULL),
120   fPMGainsB(NULL)
121 {
122 // copy constructor
123
124   SetName(calibda.GetName());
125   SetTitle(calibda.GetName());
126   
127   for(int t=0; t<128; t++) { 
128       fPedestal[t] = calibda.GetPedestal(t);
129       fSigma[t]    = calibda.GetSigma(t);
130       fADCmean[t]  = calibda.GetADCmean(t);
131       fADCsigma[t] = calibda.GetADCsigma(t); }
132       
133   for(int t=0; t<64; t++) { 
134       fMeanHV[t]       = calibda.GetMeanHV(t);
135       fWidthHV[t]      = calibda.GetWidthHV(t);        
136       fTimeOffset[t]   = calibda.GetTimeOffset(t);
137       fTimeGain[t]     = calibda.GetTimeGain(t); 
138       fDeadChannel[t]  = calibda.IsChannelDead(t);
139       fDiscriThr[t]    = calibda.GetDiscriThr(t);
140   }  
141   
142   for(int i=0; i<kNCIUBoards ;i++) {
143       fTimeResolution[i]  = calibda.GetTimeResolution(i);
144       fWidthResolution[i] = calibda.GetWidthResolution(i);        
145       fMatchWindow[i] = calibda.GetMatchWindow(i);
146       fSearchWindow[i] = calibda.GetSearchWindow(i);
147       fTriggerCountOffset[i] = calibda.GetTriggerCountOffset(i);
148       fRollOver[i] = calibda.GetRollOver(i);
149   }
150   
151 }
152
153 //________________________________________________________________
154 AliVZEROCalibData &AliVZEROCalibData::operator =(const AliVZEROCalibData& calibda)
155 {
156 // assignment operator
157
158   SetName(calibda.GetName());
159   SetTitle(calibda.GetName());
160   
161   for(int t=0; t<128; t++) {
162       fPedestal[t] = calibda.GetPedestal(t);
163       fSigma[t]    = calibda.GetSigma(t);
164       fADCmean[t]  = calibda.GetADCmean(t);
165       fADCsigma[t] = calibda.GetADCsigma(t); }
166       
167   for(int t=0; t<64; t++) {
168       fMeanHV[t]       = calibda.GetMeanHV(t);
169       fWidthHV[t]      = calibda.GetWidthHV(t);        
170       fTimeOffset[t]   = calibda.GetTimeOffset(t);
171       fTimeGain[t]     = calibda.GetTimeGain(t); 
172       fDeadChannel[t]  = calibda.IsChannelDead(t);
173       fDiscriThr[t]    = calibda.GetDiscriThr(t);
174   }   
175   for(int i=0; i<kNCIUBoards ;i++) {
176       fTimeResolution[i]  = calibda.GetTimeResolution(i);
177       fWidthResolution[i] = calibda.GetWidthResolution(i);        
178       fMatchWindow[i] = calibda.GetMatchWindow(i);
179       fSearchWindow[i] = calibda.GetSearchWindow(i);
180       fTriggerCountOffset[i] = calibda.GetTriggerCountOffset(i);
181       fRollOver[i] = calibda.GetRollOver(i);
182   }
183    
184   return *this;
185   
186 }
187
188 //________________________________________________________________
189 AliVZEROCalibData::~AliVZEROCalibData()
190 {
191   // destructor
192   if (fLightYields)
193     delete [] fLightYields;
194   if (fPMGainsA)
195     delete [] fPMGainsA;
196   if (fPMGainsB)
197     delete [] fPMGainsB;
198 }
199 //_____________________________________________________________________________
200 void AliVZEROCalibData::FillDCSData(AliVZERODataDCS * data){
201         // Set all parameters from the data get by the shuttle
202         TMap * params = data->GetFEEParameters();
203         TIter iter(params);     
204         TObjString* aliasName;
205         
206         while ((  aliasName = (TObjString*) iter.Next() ))  {
207                 AliDCSValue* aValue = (AliDCSValue*) params->GetValue(aliasName);
208                 Int_t val;
209                 if(aValue) {
210                         val = aValue->GetUInt();
211                         AliInfo(Form("%s : %d",aliasName->String().Data(), val));
212                         SetParameter(aliasName->String(),val);
213                 }
214         }       
215         
216         SetMeanHV(data->GetMeanHV());
217         SetWidthHV(data->GetWidthHV());
218         SetDeadMap(data->GetDeadMap());
219
220 }
221 //_____________________________________________________________________________
222 void AliVZEROCalibData::SetParameter(TString name, Int_t val){
223         // Set given parameter
224         
225         Int_t iBoard = -1;
226         Int_t iChannel = -1;
227
228         TSeqCollection* nameSplit = name.Tokenize("/");
229         TObjString * boardName = (TObjString *)nameSplit->At(2);
230         sscanf(boardName->String().Data(),"CIU%d",&iBoard);
231
232         TString paramName = ((TObjString *)nameSplit->At(3))->String();
233         Char_t channel[2] ; channel[1] = '\0';
234         channel[0] = paramName[paramName.Sizeof()-2];
235         sscanf(channel,"%d",&iChannel);
236                 
237         if(name.Contains("TimeResolution")) SetTimeResolution((UShort_t) val,iBoard);
238         else if(name.Contains("WidthResolution")) SetWidthResolution((UShort_t) val,iBoard);
239         else if(name.Contains("MatchWindow")) SetMatchWindow((UInt_t) val,iBoard);
240         else if(name.Contains("SearchWindow")) SetSearchWindow((UInt_t) val,iBoard);
241         else if(name.Contains("TriggerCountOffset")) SetTriggerCountOffset((UInt_t) val,iBoard);
242         else if(name.Contains("RollOver")) SetRollOver((UInt_t) val,iBoard);
243         else if(name.Contains("DelayHit")) SetTimeOffset(0.01*(Float_t)val,iBoard,(iChannel-1));
244         else if(name.Contains("DiscriThr")) SetDiscriThr(((Float_t)val-2040.)/112.,iBoard,(iChannel-1));
245         else AliError(Form("No Setter found for FEE parameter : %s",name.Data()));
246 }
247
248 //________________________________________________________________
249 void AliVZEROCalibData::SetPedestal(const Float_t* Pedestal)
250 {
251   if(Pedestal) for(int t=0; t<128; t++) fPedestal[t] = Pedestal[t];
252   else for(int t=0; t<128; t++) fPedestal[t] = 0.0;
253 }
254
255 //________________________________________________________________
256 void AliVZEROCalibData::SetSigma(const Float_t* Sigma)
257 {
258   if(Sigma) for(int t=0; t<128; t++) fSigma[t] = Sigma[t];
259   else for(int t=0; t<128; t++) fSigma[t] = 0.0;
260 }
261
262 //________________________________________________________________
263 void AliVZEROCalibData::SetADCmean(const Float_t* ADCmean) 
264 {
265   if(ADCmean) for(int t=0; t<128; t++) fADCmean[t] = ADCmean[t];
266   else for(int t=0; t<128; t++) fADCmean[t] = 0.0;
267 }
268
269 //________________________________________________________________
270 void AliVZEROCalibData::SetADCsigma(const Float_t* ADCsigma) 
271 {
272   if(ADCsigma) for(int t=0; t<128; t++) fADCsigma[t] = ADCsigma[t];
273   else for(int t=0; t<128; t++) fADCsigma[t] = 0.0;
274 }
275
276 //________________________________________________________________
277 void AliVZEROCalibData::SetMeanHV(const Float_t* MeanHV) 
278 {
279   if(MeanHV) for(int t=0; t<64; t++) fMeanHV[t] = MeanHV[t];
280   else for(int t=0; t<64; t++) fMeanHV[t] = 0.0;
281 }
282
283 //________________________________________________________________
284 void AliVZEROCalibData::SetWidthHV(const Float_t* WidthHV) 
285 {
286   if(WidthHV) for(int t=0; t<64; t++) fWidthHV[t] = WidthHV[t];
287   else for(int t=0; t<64; t++) fWidthHV[t] = 0.0;
288 }
289
290 //________________________________________________________________
291 void AliVZEROCalibData::SetDeadMap(const Bool_t* deadMap) 
292 {
293   if(deadMap) for(int t=0; t<64; t++) fDeadChannel[t] = deadMap[t];
294   else for(int t=0; t<64; t++) fDeadChannel[t] = kFALSE;
295 }
296
297 //________________________________________________________________
298 void AliVZEROCalibData::SetTimeOffset(Float_t val, Int_t board, Int_t channel)
299 {
300   Int_t ch = AliVZEROCalibData::GetOfflineChannelNumber(board,channel);
301   if(ch >= 0){
302     fTimeOffset[ch]=val;
303     AliInfo(Form("Time offset for channel %d set to %f",ch,fTimeOffset[ch]));
304   }
305   else
306     AliError("Board/Channel numbers are not valid");
307 }
308
309 //________________________________________________________________
310 void AliVZEROCalibData::SetTimeOffset(const Float_t* TimeOffset) 
311 {
312   if(TimeOffset) for(int t=0; t<64; t++) fTimeOffset[t] = TimeOffset[t];
313   else for(int t=0; t<64; t++) fTimeOffset[t] = 5.0;
314 }
315
316 //________________________________________________________________
317 void AliVZEROCalibData::SetTimeGain(const Float_t* TimeGain) 
318 {
319   if(TimeGain) for(int t=0; t<64; t++) fTimeGain[t] = TimeGain[t];
320   else for(int t=0; t<64; t++) fTimeGain[t] = 0.0;
321 }
322
323 //_____________________________________________________________________________
324 Float_t AliVZEROCalibData::GetMIPperADC(Int_t channel) {
325         
326         // Computes the MIP conversion factor - MIP per ADC channel - 
327         // Argument passed is the PM number (aliroot numbering)
328         
329   Float_t nPhPerMIP = (channel < 32) ? 6950 : 33690; 
330   return 1./(nPhPerMIP*GetLightYields(channel)*0.18*TMath::Qe()*GetGain(channel)/kChargePerADC);
331         
332 }
333
334 //________________________________________________________________
335 Float_t AliVZEROCalibData::GetGain(Int_t channel)
336 {
337   // Computes the PM gains
338   // Argument passed is the PM number (aliroot numbering)
339   if (!fPMGainsA) InitPMGains();
340
341   // High Voltage retrieval from Calibration Data Base:  
342   Float_t hv = fMeanHV[channel];
343   Float_t gain = 0;
344   if (hv>0)
345     gain = TMath::Exp(fPMGainsA[channel]+fPMGainsB[channel]*TMath::Log(hv));
346   return gain;
347 }
348
349 //________________________________________________________________
350 void AliVZEROCalibData::SetTimeResolution(UShort_t *resols){
351         // Set Time Resolution of the TDC
352         if(resols)  for(int t=0; t<kNCIUBoards; t++) SetTimeResolution(resols[t],t);
353         else AliError("Time Resolution not defined.");
354         
355 }
356 //________________________________________________________________
357 void AliVZEROCalibData::SetTimeResolution(UShort_t resol, Int_t board)
358 {
359         // Set Time Resolution of the TDC
360         if((board>=0) && (board<kNCIUBoards)) {
361                 switch(resol){
362                         case 0:
363                                 fTimeResolution[board] = 25./256.;
364                                 break;
365                         case 1:
366                                 fTimeResolution[board] = 25./128.;
367                                 break;
368                         case 2:
369                                 fTimeResolution[board] = 25./64.;
370                                 break;
371                         case 3:
372                                 fTimeResolution[board] = 25./32.;
373                                 break;
374                         case 4:
375                                 fTimeResolution[board] = 25./16.;
376                                 break;
377                         case 5:
378                                 fTimeResolution[board] = 25./8.;
379                                 break;
380                         case 6:
381                                 fTimeResolution[board] = 6.25;
382                                 break;
383                         case 7:
384                                 fTimeResolution[board] = 12.5;
385                                 break;
386                 }
387                 AliInfo(Form("Time Resolution of board %d set to %f",board,fTimeResolution[board]));
388         } else AliError(Form("Board %d is not valid",board));
389 }
390 //________________________________________________________________
391 void AliVZEROCalibData::SetWidthResolution(UShort_t *resols){
392         // Set Time Width Resolution of the TDC
393         if(resols)  for(int t=0; t<kNCIUBoards; t++) SetWidthResolution(resols[t],t);
394         else AliError("Width Resolution not defined.");
395         
396 }
397 //________________________________________________________________
398 void AliVZEROCalibData::SetWidthResolution(UShort_t resol, Int_t board)
399 {
400         // Set Time Width Resolution of the TDC
401         if((board>=0) && (board<kNCIUBoards)){
402                 switch(resol){
403                         case 0:
404                                 fWidthResolution[board] = 25./256.;
405                                 break;
406                         case 1:
407                                 fWidthResolution[board] = 25./128.;
408                                 break;
409                         case 2:
410                                 fWidthResolution[board] = 25./64.;
411                                 break;
412                         case 3:
413                                 fWidthResolution[board] = 25./32.;
414                                 break;
415                         case 4:
416                                 fWidthResolution[board] = 25./16.;
417                                 break;
418                         case 5:
419                                 fWidthResolution[board] = 25./8.;
420                                 break;
421                         case 6:
422                                 fWidthResolution[board] = 6.25;
423                                 break;
424                         case 7:
425                                 fWidthResolution[board] = 12.5;
426                                 break;
427                         case 8:
428                                 fWidthResolution[board] = 25.;
429                                 break;
430                         case 9:
431                                 fWidthResolution[board] = 50.;
432                                 break;
433                         case 10:
434                                 fWidthResolution[board] = 100.;
435                                 break;
436                         case 11:
437                                 fWidthResolution[board] = 200.;
438                                 break;
439                         case 12:
440                                 fWidthResolution[board] = 400.;
441                                 break;
442                         case 13:
443                                 fWidthResolution[board] = 800.;
444                                 break;
445                                 
446                 }
447                 AliInfo(Form("Width Resolution of board %d set to %f",board,fWidthResolution[board]));
448         }else AliError(Form("Board %d is not valid",board));
449 }
450
451 //________________________________________________________________
452 void AliVZEROCalibData::SetMatchWindow(UInt_t *windows)
453 {
454   // Set Match window of the HPTDC
455   // The units are 25ns
456   if(windows)  for(Int_t b=0; b<kNCIUBoards; b++) SetMatchWindow(windows[b],b);
457   else AliError("Match windows not defined.");
458 }
459
460 //________________________________________________________________
461 void AliVZEROCalibData::SetMatchWindow(UInt_t window, Int_t board)
462 {
463   // Set Match window of the HPTDC
464   // The units are 25ns
465   if((board>=0) && (board<kNCIUBoards)){
466     fMatchWindow[board] = window;
467     AliInfo(Form("Match window of board %d set to %d",board,fMatchWindow[board]));
468   }
469   else
470     AliError(Form("Board %d is not valid",board));
471 }
472
473 //________________________________________________________________
474 void AliVZEROCalibData::SetSearchWindow(UInt_t *windows)
475 {
476   // Set Search window of the HPTDC
477   // The units are 25ns
478   if(windows)  for(Int_t b=0; b<kNCIUBoards; b++) SetSearchWindow(windows[b],b);
479   else AliError("Search windows not defined.");
480 }
481
482 //________________________________________________________________
483 void  AliVZEROCalibData::SetSearchWindow(UInt_t window, Int_t board)
484 {
485   // Set Search window of the HPTDC
486   // The units are 25ns
487   if((board>=0) && (board<kNCIUBoards)){
488     fSearchWindow[board] = window;
489     AliInfo(Form("Search window of board %d set to %d",board,fSearchWindow[board]));
490   }
491   else
492     AliError(Form("Board %d is not valid",board));
493 }
494
495 //________________________________________________________________
496 void AliVZEROCalibData::SetTriggerCountOffset(UInt_t *offsets)
497 {
498   // Set trigger-count offset of the HPTDC
499   // The units are 25ns
500   if(offsets)  for(Int_t b=0; b<kNCIUBoards; b++) SetTriggerCountOffset(offsets[b],b);
501   else AliError("Trigger count offsets not defined.");
502 }
503
504 //________________________________________________________________
505 void AliVZEROCalibData::SetTriggerCountOffset(UInt_t offset, Int_t board)
506 {
507   // Set trigger-count offsets of the HPTDC
508   // The units are 25ns
509   if((board>=0) && (board<kNCIUBoards)){
510     fTriggerCountOffset[board] = offset;
511     AliInfo(Form("Trigger-count offset of board %d set to %d",board,fTriggerCountOffset[board]));
512   }
513   else
514     AliError(Form("Board %d is not valid",board));
515 }
516
517 //________________________________________________________________
518 void AliVZEROCalibData::SetRollOver(UInt_t *offsets)
519 {
520   // Set Roll-over of the HPTDC
521   // The units are 25ns
522   if(offsets)  for(Int_t b=0; b<kNCIUBoards; b++) SetRollOver(offsets[b],b);
523   else AliError("Roll-over offsets not defined.");
524 }
525
526 //________________________________________________________________
527 void AliVZEROCalibData::SetRollOver(UInt_t offset, Int_t board)
528 {
529   // Set Roll-over of the HPTDC
530   // The units are 25ns
531   if((board>=0) && (board<kNCIUBoards)){
532     fRollOver[board] = offset;
533     AliInfo(Form("Roll-over offset of board %d set to %d",board,fRollOver[board]));
534   }
535   else
536     AliError(Form("Board %d is not valid",board));
537 }
538
539 //________________________________________________________________
540 void AliVZEROCalibData::SetDiscriThr(Float_t thr, Int_t board, Int_t channel)
541 {
542   // Set the TDC discriminator
543   // threshold values expressed in units of ADC
544   Int_t ch = AliVZEROCalibData::GetOfflineChannelNumber(board,channel);
545   if(ch >= 0){
546     if (thr > 0) {
547       fDiscriThr[ch]=thr;
548       AliInfo(Form("Discriminator threshold for channel %d set to %f",ch,fDiscriThr[ch]));
549     }
550     else {
551       AliWarning(Form("Ignore wrong threshold value (%f) for channel %d !",thr,ch));
552     }
553   }
554   else
555     AliError("Board/Channel numbers are not valid");
556 }
557
558 //________________________________________________________________
559 void AliVZEROCalibData::SetDiscriThr(const Float_t* thresholds) 
560 {
561   // Set the TDC discriminator
562   // threshold values expressed in units of ADC
563   if(thresholds) for(int t=0; t<64; t++) fDiscriThr[t] = thresholds[t];
564   else for(int t=0; t<64; t++) fDiscriThr[t] = 2.5;
565 }
566
567 Int_t AliVZEROCalibData::GetOfflineChannelNumber(Int_t board, Int_t channel)
568 {
569   // Get the offline channel number from
570   // the FEE board and channel indexes
571
572   if (board < 0 || board >= 8) {
573     AliErrorClass(Form("Wrong FEE board number: %d",board));
574     return -1;
575   }
576   if (channel < 0 || channel >= 8) {
577     AliErrorClass(Form("Wrong FEE channel number: %d",channel));
578     return -1;
579   }
580
581   Int_t offCh = (board < 4) ? (8 * board + 32) : (8 * board -32);
582   offCh += (7 - channel);
583
584   return offCh;
585 }
586
587 Int_t AliVZEROCalibData::GetBoardNumber(Int_t channel)
588 {
589   // Get FEE board number
590   // from offline channel index
591   if (channel >= 0 && channel < 32) return (channel / 8 + 4);
592   if (channel >=32 && channel < 64) return (channel / 8 - 4);
593
594   AliErrorClass(Form("Wrong channel index: %d",channel));
595   return -1;
596 }
597
598 Int_t AliVZEROCalibData::GetFEEChannelNumber(Int_t channel)
599 {
600   // Get FEE channel number
601   // from offline channel index
602   if (channel >= 0 && channel < 64) return (7 - (channel % 8));
603
604   AliErrorClass(Form("Wrong channel index: %d",channel));
605   return -1;
606 }
607
608 Float_t AliVZEROCalibData::GetLightYields(Int_t channel)
609 {
610   // Get the light yield efficiency
611   // for a given channel
612   if (!fLightYields) InitLightYields();
613
614   if (channel >= 0 && channel < 64) {
615     return fLightYields[channel];
616   }
617
618   AliError(Form("Wrong channel index: %d",channel));
619   return 0;
620 }
621
622 void  AliVZEROCalibData::InitLightYields()
623 {
624   // Initialize the light yield factors
625   // Read from a separate OCDB entry
626   if (fLightYields) return;
627
628   AliCDBEntry *entry = AliCDBManager::Instance()->Get("VZERO/Calib/LightYields");
629   if (!entry) AliFatal("VZERO light yields are not found in OCDB !");
630   TH1F *yields = (TH1F*)entry->GetObject();
631
632   fLightYields = new Float_t[64];
633   for(Int_t i = 0 ; i < 64; ++i) {
634     fLightYields[i] = yields->GetBinContent(i+1);
635   }
636 }
637
638 void  AliVZEROCalibData::InitPMGains()
639 {
640   // Initialize the PM gain factors
641   // Read from a separate OCDB entry
642   if (fPMGainsA) return;
643
644   AliCDBEntry *entry = AliCDBManager::Instance()->Get("VZERO/Calib/PMGains");
645   if (!entry) AliFatal("VZERO PM gains are not found in OCDB !");
646   TH2F *gains = (TH2F*)entry->GetObject();
647
648   fPMGainsA = new Float_t[64];
649   fPMGainsB = new Float_t[64];
650   for(Int_t i = 0 ; i < 64; ++i) {
651     fPMGainsA[i] = gains->GetBinContent(i+1,1);
652     fPMGainsB[i] = gains->GetBinContent(i+1,2);
653   }
654 }
655
656 Float_t AliVZEROCalibData::GetCalibDiscriThr(Int_t channel, Bool_t scaled)
657 {
658   // The method returns actual TDC discri threshold
659   // extracted from the data.
660   //
661   // In case scaled flag is set the threshold is scaled
662   // so that to get 4.0 for a FEE threshold of 4.0.
663   // In this way we avoid a change in the slewing correction
664   // for the entire 2010 p-p data.
665   //
666   // The method is to be moved to OCDB object.
667
668   Float_t thr = GetDiscriThr(channel);
669
670   Float_t calThr = 0;
671   if (thr <= 1.) 
672     calThr = 3.1;
673   else if (thr >= 2.)
674     calThr = (3.1+1.15*thr-1.7);
675   else
676     calThr = (3.1-0.3*thr+0.3*thr*thr);
677
678   if (scaled) calThr *= 4./(3.1+1.15*4.-1.7);
679
680   return calThr;
681 }