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379c5c09 | 1 | /************************************************************************** |
2 | * Copyright(c) 2007, 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 | ||
16 | /* $Id: $ */ | |
17 | ||
18 | // This class extracts the signal parameters (energy, time, quality) | |
19 | // from ALTRO samples. Energy is in ADC counts, time is in time bin units. | |
20 | // A coarse algorithm takes the energy as the maximum | |
21 | // sample, time is the first sample index, and the quality is the number | |
22 | // of bunches in the signal. | |
23 | // | |
24 | // AliPHOSRawFitterv0 *fitterv0=new AliPHOSRawFitterv0(); | |
25 | // fitterv0->SetSamples(sig,sigStart,sigLength); | |
26 | // fitterv0->SetNBunches(nBunches); | |
27 | // fitterv0->SetChannelGeo(module,cellX,cellZ,caloFlag); | |
28 | // fitterv0->SetCalibData(fgCalibData) ; | |
29 | // fitterv0->Eval(); | |
30 | // Double_t amplitude = fitterv0.GetEnergy(); | |
31 | // Double_t time = fitterv0.GetTime(); | |
32 | // Bool_t isLowGain = fitterv0.GetCaloFlag()==0; | |
33 | ||
34 | // Author: Yuri Kharlov | |
35 | ||
36 | // --- ROOT system --- | |
37 | #include "TArrayI.h" | |
38 | #include "TMath.h" | |
39 | #include "TObject.h" | |
40 | ||
41 | // --- AliRoot header files --- | |
42 | #include "AliPHOSRawFitterv0.h" | |
43 | #include "AliPHOSCalibData.h" | |
44 | #include "AliLog.h" | |
45 | ||
46 | ClassImp(AliPHOSRawFitterv0) | |
47 | ||
48 | //----------------------------------------------------------------------------- | |
49 | AliPHOSRawFitterv0::AliPHOSRawFitterv0(): | |
50 | TObject(), | |
51 | fSignal(0), | |
52 | fModule(0), | |
53 | fCellX(0), | |
54 | fCellZ(0), | |
55 | fCaloFlag(0), | |
56 | fStart(0), | |
57 | fLength(0), | |
58 | fNBunches(0), | |
59 | fPedSubtract(kFALSE), | |
60 | fEnergy(-111), | |
61 | fTime(-111), | |
62 | fQuality(0.), | |
63 | fPedestalRMS(0.), | |
64 | fAmpOffset(0), | |
65 | fAmpThreshold(0), | |
66 | fOverflow(kFALSE), | |
67 | fCalibData(0) | |
68 | { | |
69 | //Default constructor | |
70 | } | |
71 | ||
72 | //----------------------------------------------------------------------------- | |
73 | AliPHOSRawFitterv0::~AliPHOSRawFitterv0() | |
74 | { | |
75 | //Destructor | |
76 | delete [] fSignal; | |
77 | } | |
78 | ||
79 | //----------------------------------------------------------------------------- | |
80 | AliPHOSRawFitterv0::AliPHOSRawFitterv0(const AliPHOSRawFitterv0 &phosFitter ): | |
81 | TObject(), | |
82 | fSignal (phosFitter.fSignal), | |
83 | fModule (phosFitter.fModule), | |
84 | fCellX (phosFitter.fCellX), | |
85 | fCellZ (phosFitter.fCellZ), | |
86 | fCaloFlag (phosFitter.fCaloFlag), | |
87 | fStart (phosFitter.fStart), | |
88 | fLength (phosFitter.fLength), | |
89 | fNBunches (phosFitter.fNBunches), | |
90 | fPedSubtract (phosFitter.fPedSubtract), | |
91 | fEnergy (phosFitter.fEnergy), | |
92 | fTime (phosFitter.fTime), | |
93 | fQuality (phosFitter.fQuality), | |
94 | fPedestalRMS (phosFitter.fPedestalRMS), | |
95 | fAmpOffset (phosFitter.fAmpOffset), | |
96 | fAmpThreshold(phosFitter.fAmpThreshold), | |
97 | fOverflow (phosFitter.fOverflow), | |
98 | fCalibData (phosFitter.fCalibData) | |
99 | { | |
100 | //Copy constructor | |
101 | } | |
102 | ||
103 | //----------------------------------------------------------------------------- | |
104 | AliPHOSRawFitterv0& AliPHOSRawFitterv0::operator = (const AliPHOSRawFitterv0 &phosFitter) | |
105 | { | |
106 | //Assignment operator. | |
107 | ||
108 | if(this != &phosFitter) { | |
109 | fSignal = phosFitter.fSignal; | |
110 | fModule = phosFitter.fModule; | |
111 | fCellX = phosFitter.fCellX; | |
112 | fCellZ = phosFitter.fCellZ; | |
113 | fCaloFlag = phosFitter.fCaloFlag; | |
114 | fStart = phosFitter.fStart; | |
115 | fLength = phosFitter.fLength; | |
116 | fNBunches = phosFitter.fNBunches; | |
117 | fPedSubtract = phosFitter.fPedSubtract; | |
118 | fEnergy = phosFitter.fEnergy; | |
119 | fTime = phosFitter.fTime; | |
120 | fQuality = phosFitter.fQuality; | |
121 | fPedestalRMS = phosFitter.fPedestalRMS; | |
122 | fAmpOffset = phosFitter.fAmpOffset; | |
123 | fAmpThreshold = phosFitter.fAmpThreshold; | |
124 | fOverflow = phosFitter.fOverflow; | |
125 | fCalibData = phosFitter.fCalibData; | |
126 | } | |
127 | ||
128 | return *this; | |
129 | } | |
130 | ||
131 | //----------------------------------------------------------------------------- | |
132 | ||
133 | void AliPHOSRawFitterv0::SetSamples(const UShort_t *sig, Int_t sigStart, Int_t sigLength) | |
134 | { | |
135 | // Set the sample array, its start and length in time bin units | |
136 | ||
137 | fStart = sigStart; | |
138 | fLength = sigLength; | |
139 | fSignal = new UShort_t[fLength]; | |
140 | for (Int_t i=0; i<fLength; i++) { | |
141 | fSignal[i] = sig[i]; | |
142 | } | |
143 | } | |
144 | //----------------------------------------------------------------------------- | |
145 | ||
146 | void AliPHOSRawFitterv0::SetChannelGeo(const Int_t module, const Int_t cellX, | |
147 | const Int_t cellZ, const Int_t caloFlag) | |
148 | { | |
149 | // Set geometry address of the channel | |
150 | // (for a case if fitting parameters are different for different channels) | |
151 | ||
152 | fModule = module; | |
153 | fCellX = cellX; | |
154 | fCellZ = cellZ; | |
155 | fCaloFlag = caloFlag; | |
156 | } | |
157 | //----------------------------------------------------------------------------- | |
158 | ||
159 | Bool_t AliPHOSRawFitterv0::Eval() | |
160 | { | |
161 | // Calculate signal parameters (energy, time, quality) from array of samples | |
162 | // Energy is a maximum sample minus pedestal 9 | |
163 | // Time is the first time bin | |
164 | // Signal overflows is there are at least 3 samples of the same amplitude above 900 | |
165 | ||
166 | fEnergy = 0; | |
167 | if (fNBunches > 1) { | |
168 | fQuality = 1000; | |
169 | return kTRUE; | |
170 | } | |
171 | ||
172 | const Float_t kBaseLine = 1.0; | |
173 | const Int_t kPreSamples = 10; | |
174 | ||
175 | Float_t pedMean = 0; | |
176 | Float_t pedRMS = 0; | |
177 | Int_t nPed = 0; | |
178 | UShort_t maxSample = 0; | |
179 | Int_t nMax = 0; | |
180 | ||
181 | for (Int_t i=0; i<fLength; i++) { | |
182 | if (i<kPreSamples) { | |
183 | nPed++; | |
184 | pedMean += fSignal[i]; | |
185 | pedRMS += fSignal[i]*fSignal[i] ; | |
186 | } | |
187 | if(fSignal[i] > maxSample) maxSample = fSignal[i]; | |
188 | if(fSignal[i] == maxSample) nMax++; | |
189 | } | |
190 | fEnergy = (Double_t)maxSample; | |
191 | if (maxSample > 900 && nMax > 2) fOverflow = kTRUE; | |
192 | ||
193 | if (fPedSubtract) { | |
194 | if (nPed > 0) { | |
195 | fPedestalRMS=(pedRMS - pedMean*pedMean/nPed)/nPed ; | |
196 | if(fPedestalRMS > 0.) | |
197 | fPedestalRMS = TMath::Sqrt(fPedestalRMS) ; | |
198 | fEnergy -= (Double_t)(pedMean/nPed); // pedestal subtraction | |
199 | } | |
200 | else | |
201 | return kFALSE; | |
202 | } | |
203 | else { | |
204 | //take pedestals from DB | |
205 | Double_t pedestal = (Double_t) fAmpOffset ; | |
206 | if (fCalibData) { | |
207 | Float_t truePed = fCalibData->GetADCpedestalEmc(fModule, fCellZ, fCellX) ; | |
208 | Int_t altroSettings = fCalibData->GetAltroOffsetEmc(fModule, fCellZ, fCellX) ; | |
209 | pedestal += truePed - altroSettings ; | |
210 | } | |
211 | else{ | |
212 | AliWarning(Form("Can not read data from OCDB")) ; | |
213 | } | |
214 | fEnergy-=pedestal ; | |
215 | } | |
216 | if (fEnergy < kBaseLine) fEnergy = 0; | |
217 | ||
218 | return kTRUE; | |
219 | ||
220 | } |