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1 | #include "AliHBTReaderESD.h" |
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2 | //____________________________________________________________________ |
3 | ////////////////////////////////////////////////////////////////////// |
4 | // // |
5 | // class AliHBTReaderESD // |
6 | // // |
7 | // reader for ALICE Event Summary Data (ESD). // |
8 | // // |
9 | // Piotr.Skowronski@cern.ch // |
10 | // // |
11 | ////////////////////////////////////////////////////////////////////// |
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12 | |
13 | #include <TPDGCode.h> |
14 | #include <TString.h> |
15 | #include <TObjString.h> |
16 | #include <TTree.h> |
17 | #include <TFile.h> |
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18 | #include <TKey.h> |
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19 | #include <TParticle.h> |
20 | |
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21 | #include <AliRun.h> |
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22 | #include <AliRunLoader.h> |
23 | #include <AliStack.h> |
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24 | #include <AliESDtrack.h> |
25 | #include <AliESD.h> |
26 | |
27 | #include "AliHBTRun.h" |
28 | #include "AliHBTEvent.h" |
29 | #include "AliHBTParticle.h" |
30 | #include "AliHBTParticleCut.h" |
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31 | #include "AliHBTTrackPoints.h" |
32 | #include "AliHBTClusterMap.h" |
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33 | |
34 | ClassImp(AliHBTReaderESD) |
35 | |
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36 | AliHBTReaderESD::AliHBTReaderESD(const Char_t* esdfilename, const Char_t* galfilename): |
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37 | fESDFileName(esdfilename), |
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38 | fGAlFileName(galfilename), |
39 | fFile(0x0), |
40 | fRunLoader(0x0), |
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41 | fKeyIterator(0x0), |
42 | fReadParticles(kFALSE), |
43 | fNTrackPoints(0), |
44 | fdR(0.0), |
45 | fClusterMap(kFALSE), |
46 | fNTPCClustMin(0), |
47 | fNTPCClustMax(150), |
48 | fTPCChi2PerClustMin(0.0), |
49 | fTPCChi2PerClustMax(10e5), |
50 | fC00Min(0.0), |
51 | fC00Max(10e5), |
52 | fC11Min(0.0), |
53 | fC11Max(10e5), |
54 | fC22Min(0.0), |
55 | fC22Max(10e5), |
56 | fC33Min(0.0), |
57 | fC33Max(10e5), |
58 | fC44Min(0.0), |
59 | fC44Max(10e5), |
60 | fTPCC00Min(0.0), |
61 | fTPCC00Max(10e5), |
62 | fTPCC11Min(0.0), |
63 | fTPCC11Max(10e5), |
64 | fTPCC22Min(0.0), |
65 | fTPCC22Max(10e5), |
66 | fTPCC33Min(0.0), |
67 | fTPCC33Max(10e5), |
68 | fTPCC44Min(0.0), |
69 | fTPCC44Max(10e5) |
70 | |
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71 | { |
72 | //cosntructor |
73 | if ( ((Int_t)kNSpecies) != ((Int_t)AliESDtrack::kSPECIES)) |
74 | Fatal("AliHBTReaderESD","ESD defintions probobly changed. Ask Youra."); |
75 | } |
76 | /********************************************************************/ |
77 | |
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78 | AliHBTReaderESD::AliHBTReaderESD(TObjArray* dirs,const Char_t* esdfilename, const Char_t* galfilename): |
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79 | AliHBTReader(dirs), |
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80 | fESDFileName(esdfilename), |
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81 | fGAlFileName(galfilename), |
82 | fFile(0x0), |
83 | fRunLoader(0x0), |
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84 | fKeyIterator(0x0), |
85 | fReadParticles(kFALSE), |
86 | fNTrackPoints(0), |
87 | fdR(0.0), |
88 | fClusterMap(kFALSE), |
89 | fNTPCClustMin(0), |
90 | fNTPCClustMax(150), |
91 | fTPCChi2PerClustMin(0.0), |
92 | fTPCChi2PerClustMax(10e5), |
93 | fC00Min(0.0), |
94 | fC00Max(10e5), |
95 | fC11Min(0.0), |
96 | fC11Max(10e5), |
97 | fC22Min(0.0), |
98 | fC22Max(10e5), |
99 | fC33Min(0.0), |
100 | fC33Max(10e5), |
101 | fC44Min(0.0), |
102 | fC44Max(10e5), |
103 | fTPCC00Min(0.0), |
104 | fTPCC00Max(10e5), |
105 | fTPCC11Min(0.0), |
106 | fTPCC11Max(10e5), |
107 | fTPCC22Min(0.0), |
108 | fTPCC22Max(10e5), |
109 | fTPCC33Min(0.0), |
110 | fTPCC33Max(10e5), |
111 | fTPCC44Min(0.0), |
112 | fTPCC44Max(10e5) |
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113 | { |
114 | //cosntructor |
115 | if ( ((Int_t)kNSpecies) != ((Int_t)AliESDtrack::kSPECIES)) |
116 | Fatal("AliHBTReaderESD","ESD defintions probobly changed. Ask Youra."); |
117 | } |
118 | /********************************************************************/ |
119 | |
120 | AliHBTReaderESD::~AliHBTReaderESD() |
121 | { |
122 | //desctructor |
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123 | delete fRunLoader; |
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124 | delete fKeyIterator; |
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125 | delete fFile; |
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126 | } |
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127 | /**********************************************************/ |
128 | Int_t AliHBTReaderESD::ReadNext() |
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129 | { |
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130 | //reads next event from fFile |
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131 | //fRunLoader is for reading Kine |
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132 | //****** Tentative particle type "concentrations" |
133 | static const Double_t concentr[5]={0.05, 0., 0.85, 0.10, 0.05}; |
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134 | |
135 | Double_t pidtable[kNSpecies];//array used for reading pid probabilities from ESD track |
136 | Double_t w[kNSpecies]; |
137 | Double_t mom[3];//momentum |
138 | Double_t pos[3];//position |
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139 | |
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140 | if (AliHBTParticle::GetDebug()) |
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141 | Info("ReadNext","Entered"); |
142 | |
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143 | TDatabasePDG* pdgdb = TDatabasePDG::Instance(); |
144 | if (pdgdb == 0x0) |
145 | { |
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146 | Error("Next","Can not get PDG Database Instance."); |
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147 | return 1; |
148 | } |
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149 | |
150 | if (fParticlesEvent == 0x0) fParticlesEvent = new AliHBTEvent(); |
151 | if (fTracksEvent == 0x0) fTracksEvent = new AliHBTEvent(); |
152 | |
153 | fParticlesEvent->Reset(); |
154 | fTracksEvent->Reset(); |
155 | |
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156 | do //do{}while; is OK even if 0 dirs specified. In that case we try to read from "./" |
157 | { |
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158 | if (fFile == 0x0) |
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159 | { |
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160 | fFile = OpenFile(fCurrentDir);//rl is opened here |
161 | if (fFile == 0x0) |
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162 | { |
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163 | Error("ReadNext","Cannot get fFile for dir no. %d",fCurrentDir); |
164 | fCurrentDir++; |
165 | continue; |
166 | } |
167 | fCurrentEvent = 0; |
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168 | fKeyIterator = new TIter(fFile->GetListOfKeys()); |
169 | fFile->Dump(); |
170 | fFile->GetListOfKeys()->Print(); |
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171 | } |
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172 | TKey* key = (TKey*)fKeyIterator->Next(); |
173 | if (key == 0x0) |
174 | { |
175 | if (AliHBTParticle::GetDebug() > 2 ) |
176 | { |
177 | Info("ReadNext","No more keys."); |
178 | } |
179 | fCurrentDir++; |
180 | delete fKeyIterator; |
181 | fKeyIterator = 0x0; |
182 | delete fFile;//we have to assume there is no more ESD objects in the fFile |
183 | fFile = 0x0; |
184 | delete fRunLoader; |
185 | fRunLoader = 0x0; |
186 | continue; |
187 | } |
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188 | //try to read |
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189 | |
190 | |
191 | // TObject* esdobj = key->ReadObj(); |
192 | // if (esdobj == 0x0) |
193 | // { |
194 | // if (AliHBTParticle::GetDebug() > 2 ) |
195 | // { |
196 | // Info("ReadNext","Key read NULL. Key Name is %s",key->GetName()); |
197 | // key->Dump(); |
198 | // } |
199 | // continue; |
200 | // } |
201 | // esdobj->Dump(); |
202 | // AliESD* esd = dynamic_cast<AliESD*>(esdobj); |
203 | |
204 | TString esdname = "ESD"; |
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205 | esdname+=fCurrentEvent; |
206 | AliESD* esd = dynamic_cast<AliESD*>(fFile->Get(esdname)); |
207 | if (esd == 0x0) |
208 | { |
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209 | // if (AliHBTParticle::GetDebug() > 2 ) |
210 | // { |
211 | // Info("ReadNext","This key is not an AliESD object %s",key->GetName()); |
212 | // } |
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213 | if (AliHBTParticle::GetDebug() > 2 ) |
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214 | { |
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215 | Info("ReadNext","Can not find AliESD object named %s",esdname.Data()); |
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216 | } |
217 | fCurrentDir++; |
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218 | delete fKeyIterator; |
219 | fKeyIterator = 0x0; |
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220 | delete fFile;//we have to assume there is no more ESD objects in the fFile |
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221 | fFile = 0x0; |
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222 | delete fRunLoader; |
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223 | fRunLoader = 0x0; |
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224 | continue; |
225 | } |
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226 | |
227 | |
228 | Float_t mf = esd->GetMagneticField(); |
229 | |
230 | if ( (mf == 0.0) && (fNTrackPoints > 0) ) |
231 | { |
232 | Error("ReadNext","Magnetic Field is 0 and Track Points Demended. Skipping to next event."); |
233 | fCurrentEvent++; |
234 | continue; |
235 | } |
236 | |
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237 | AliStack* stack = 0x0; |
238 | if (fReadParticles && fRunLoader) |
239 | { |
240 | fRunLoader->GetEvent(fCurrentEvent); |
241 | stack = fRunLoader->Stack(); |
242 | } |
243 | Info("ReadNext","Reading Event %d",fCurrentEvent); |
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244 | |
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245 | Int_t ntr = esd->GetNumberOfTracks(); |
246 | Info("ReadNext","Found %d tracks.",ntr); |
247 | for (Int_t i = 0;i<ntr; i++) |
248 | { |
249 | AliESDtrack *esdtrack = esd->GetTrack(i); |
250 | if (esdtrack == 0x0) |
251 | { |
252 | Error("Next","Can not get track %d", i); |
253 | continue; |
254 | } |
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255 | |
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256 | //if (esdtrack->HasVertexParameters() == kFALSE) |
257 | if ((esdtrack->GetStatus() & AliESDtrack::kITSrefit) == kFALSE) |
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258 | { |
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259 | if (AliHBTParticle::GetDebug() > 2) |
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260 | Info("ReadNext","Particle skipped: Data at vertex not available."); |
261 | continue; |
262 | } |
263 | |
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264 | if ((esdtrack->GetStatus()&AliESDtrack::kESDpid) == kFALSE) |
265 | { |
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266 | if (AliHBTParticle::GetDebug() > 2) |
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267 | Info("ReadNext","Particle skipped: PID BIT is not set."); |
268 | continue; |
269 | } |
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270 | |
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271 | esdtrack->GetESDpid(pidtable); |
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272 | //esdtrack->GetVertexPxPyPz(mom[0],mom[1],mom[2]); |
273 | esdtrack->GetPxPyPz(mom); |
274 | //esdtrack->GetVertexXYZ(pos[0],pos[1],pos[2]); |
275 | esdtrack->GetXYZ(pos); |
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276 | |
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277 | Double_t extx; |
278 | Double_t extp[5]; |
279 | esdtrack->GetExternalParameters(extx,extp); |
280 | |
281 | Int_t charge = (extp[4] > 0)?-1:1;//if curvature=-charg/Pt is positive charge is negative |
282 | |
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283 | //Particle from kinematics |
284 | AliHBTParticle* particle = 0; |
285 | Bool_t keeppart = kFALSE; |
286 | if ( fReadParticles && stack ) |
287 | { |
288 | if (esdtrack->GetLabel() < 0) continue;//this is fake - we are not able to match any track |
289 | TParticle *p = stack->Particle(esdtrack->GetLabel()); |
290 | if (p==0x0) |
291 | { |
292 | Error("ReadNext","Can not find track with such label."); |
293 | continue; |
294 | } |
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295 | // if(p->GetPdgCode()<0) charge = -1; |
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296 | particle = new AliHBTParticle(*p,i); |
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297 | |
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298 | } |
299 | |
300 | //Here we apply Bayes' formula |
301 | Double_t rc=0.; |
302 | for (Int_t s=0; s<AliESDtrack::kSPECIES; s++) rc+=concentr[s]*pidtable[s]; |
303 | if (rc==0.0) |
304 | { |
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305 | if (AliHBTParticle::GetDebug() > 2) |
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306 | Info("ReadNext","Particle rejected since total bayessian PID probab. is zero."); |
307 | continue; |
308 | } |
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309 | |
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310 | for (Int_t s=0; s<AliESDtrack::kSPECIES; s++) w[s]=concentr[s]*pidtable[s]/rc; |
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311 | |
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312 | if (AliHBTParticle::GetDebug() > 4) |
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313 | { |
314 | Info("ReadNext","###########################################################################"); |
315 | Info("ReadNext","Momentum: %f %f %f",mom[0],mom[1],mom[2]); |
316 | Info("ReadNext","Position: %f %f %f",pos[0],pos[1],pos[2]); |
317 | TString msg("Pid list got from track:"); |
318 | for (Int_t s = 0;s<kNSpecies;s++) |
319 | { |
320 | msg+="\n "; |
321 | msg+=s; |
322 | msg+="("; |
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323 | msg+=charge*GetSpeciesPdgCode((ESpecies)s); |
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324 | msg+="): "; |
325 | msg+=w[s]; |
326 | msg+=" ("; |
327 | msg+=pidtable[s]; |
328 | msg+=")"; |
329 | } |
330 | Info("ReadNext","%s",msg.Data()); |
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331 | }//if (AliHBTParticle::GetDebug()>4) |
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332 | |
333 | AliHBTTrackPoints* tpts = 0x0; |
334 | if (fNTrackPoints > 0) |
335 | { |
336 | tpts = new AliHBTTrackPoints(fNTrackPoints,esdtrack,mf,fdR); |
337 | } |
338 | |
339 | AliHBTClusterMap* cmap = 0x0; |
340 | if ( fClusterMap ) |
341 | { |
342 | cmap = new AliHBTClusterMap(esdtrack); |
343 | } |
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344 | |
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345 | for (Int_t s = 0; s<kNSpecies; s++) |
346 | { |
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347 | Float_t pp = w[s]; |
348 | if (pp == 0.0) continue; |
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349 | |
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350 | Int_t pdgcode = charge*GetSpeciesPdgCode((ESpecies)s); |
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351 | if(Pass(pdgcode)) continue; //check if we are intersted with particles of this type |
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352 | |
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353 | Double_t mass = pdgdb->GetParticle(pdgcode)->Mass(); |
354 | Double_t tEtot = TMath::Sqrt( mom[0]*mom[0] + mom[1]*mom[1] + mom[2]*mom[2] + mass*mass);//total energy of the track |
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355 | |
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356 | AliHBTParticle* track = new AliHBTParticle(pdgcode, w[s],i, |
357 | mom[0], mom[1], mom[2], tEtot, |
358 | pos[0], pos[1], pos[2], 0.); |
359 | //copy probabilitis of other species (if not zero) |
360 | for (Int_t k = 0; k<kNSpecies; k++) |
361 | { |
362 | if (k == s) continue; |
363 | if (w[k] == 0.0) continue; |
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364 | track->SetPIDprobability(charge*GetSpeciesPdgCode( (ESpecies)k ),w[k]); |
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365 | } |
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366 | |
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367 | if(Pass(track))//check if meets all criteria of any of our cuts |
368 | //if it does not delete it and take next good track |
369 | { |
370 | delete track; |
371 | continue; |
372 | } |
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373 | |
374 | //Single Particle cuts on cluster map and track points rather do not have sense |
375 | if (tpts) |
376 | { |
377 | track->SetTrackPoints(tpts); |
378 | } |
379 | |
380 | if (cmap) |
381 | { |
382 | track->SetClusterMap(cmap); |
383 | } |
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384 | |
385 | fTracksEvent->AddParticle(track); |
386 | if (particle) fParticlesEvent->AddParticle(particle); |
387 | keeppart = kTRUE; |
388 | |
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389 | if (AliHBTParticle::GetDebug() > 4 ) |
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390 | { |
391 | Info("ReadNext","\n\nAdding Particle with incarnation %d",pdgcode); |
392 | track->Print(); |
393 | } |
394 | }//for (Int_t s = 0; s<kNSpecies; s++) |
395 | |
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396 | if (keeppart == kFALSE) |
397 | { |
398 | delete particle;//particle was not stored in event |
399 | delete tpts; |
400 | delete cmap; |
401 | } |
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402 | |
403 | }//for (Int_t i = 0;i<ntr; i++) -- loop over tracks |
404 | |
405 | Info("ReadNext","Read %d tracks and %d particles from event %d (event %d in dir %d).", |
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406 | fTracksEvent->GetNumberOfParticles(), fParticlesEvent->GetNumberOfParticles(), |
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407 | fNEventsRead,fCurrentEvent,fCurrentDir); |
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408 | |
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409 | fCurrentEvent++; |
410 | fNEventsRead++; |
411 | delete esd; |
412 | return 0;//success -> read one event |
413 | }while(fCurrentDir < GetNumberOfDirs());//end of loop over directories specified in fDirs Obj Array |
414 | |
415 | return 1; //no more directories to read |
416 | } |
417 | /**********************************************************/ |
418 | void AliHBTReaderESD::Rewind() |
419 | { |
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420 | //rewinds reading |
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421 | delete fKeyIterator; |
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422 | delete fFile; |
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423 | fFile = 0x0; |
424 | fKeyIterator = 0x0; |
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425 | delete fRunLoader; |
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426 | fRunLoader = 0x0; |
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427 | fCurrentDir = 0; |
428 | fNEventsRead = 0; |
429 | fCurrentEvent++; |
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430 | } |
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431 | /**********************************************************/ |
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432 | |
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433 | TFile* AliHBTReaderESD::OpenFile(Int_t n) |
434 | { |
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435 | //opens fFile with kine tree |
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436 | |
437 | const TString& dirname = GetDirName(n); |
438 | if (dirname == "") |
439 | { |
440 | Error("OpenFiles","Can not get directory name"); |
441 | return 0x0; |
442 | } |
443 | TString filename = dirname +"/"+ fESDFileName; |
444 | TFile *ret = TFile::Open(filename.Data()); |
445 | |
446 | if ( ret == 0x0) |
447 | { |
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448 | Error("OpenFiles","Can't open fFile %s",filename.Data()); |
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449 | return 0x0; |
450 | } |
451 | if (!ret->IsOpen()) |
452 | { |
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453 | Error("OpenFiles","Can't open fFile %s",filename.Data()); |
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454 | return 0x0; |
455 | } |
456 | |
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457 | if (fReadParticles ) |
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458 | { |
459 | fRunLoader = AliRunLoader::Open(dirname +"/"+ fGAlFileName); |
460 | if (fRunLoader == 0x0) |
461 | { |
462 | Error("OpenFiles","Can't get RunLoader for directory %s",dirname.Data()); |
463 | delete ret; |
464 | return 0x0; |
465 | } |
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466 | |
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467 | fRunLoader->LoadHeader(); |
468 | if (fRunLoader->LoadKinematics()) |
469 | { |
470 | Error("Next","Error occured while loading kinematics."); |
471 | delete fRunLoader; |
472 | delete ret; |
473 | return 0x0; |
474 | } |
475 | } |
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476 | |
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477 | return ret; |
478 | } |
479 | /**********************************************************/ |
480 | |
481 | Int_t AliHBTReaderESD::GetSpeciesPdgCode(ESpecies spec)//skowron |
482 | { |
483 | //returns pdg code from the PID index |
484 | //ask jura about charge |
485 | switch (spec) |
486 | { |
487 | case kESDElectron: |
488 | return kPositron; |
489 | break; |
490 | case kESDMuon: |
491 | return kMuonPlus; |
492 | break; |
493 | case kESDPion: |
494 | return kPiPlus; |
495 | break; |
496 | case kESDKaon: |
497 | return kKPlus; |
498 | break; |
499 | case kESDProton: |
500 | return kProton; |
501 | break; |
502 | default: |
503 | ::Warning("GetSpeciesPdgCode","Specie with number %d is not defined.",(Int_t)spec); |
504 | break; |
505 | } |
506 | return 0; |
507 | } |
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508 | /********************************************************************/ |
509 | |
510 | void AliHBTReaderESD::SetTPCNClustersRange(Int_t min,Int_t max) |
511 | { |
512 | //sets range of Number Of Clusters that tracks have to have |
513 | fNTPCClustMin = min; |
514 | fNTPCClustMax = max; |
515 | } |
516 | /********************************************************************/ |
517 | |
518 | void AliHBTReaderESD::SetTPCChi2PerCluserRange(Float_t min, Float_t max) |
519 | { |
520 | //sets range of Chi2 per Cluster |
521 | fTPCChi2PerClustMin = min; |
522 | fTPCChi2PerClustMax = max; |
523 | } |
524 | /********************************************************************/ |
525 | |
526 | void AliHBTReaderESD::SetC00Range(Float_t min, Float_t max) |
527 | { |
528 | //Sets range of C00 parameter of covariance matrix of the track |
529 | //it defines uncertainty of the momentum |
530 | fC00Min = min; |
531 | fC00Max = max; |
532 | } |
533 | /********************************************************************/ |
534 | |
535 | void AliHBTReaderESD::SetC11Range(Float_t min, Float_t max) |
536 | { |
537 | //Sets range of C11 parameter of covariance matrix of the track |
538 | //it defines uncertainty of the momentum |
539 | fC11Min = min; |
540 | fC11Max = max; |
541 | } |
542 | /********************************************************************/ |
543 | |
544 | void AliHBTReaderESD::SetC22Range(Float_t min, Float_t max) |
545 | { |
546 | //Sets range of C22 parameter of covariance matrix of the track |
547 | //it defines uncertainty of the momentum |
548 | fC22Min = min; |
549 | fC22Max = max; |
550 | } |
551 | /********************************************************************/ |
552 | |
553 | void AliHBTReaderESD::SetC33Range(Float_t min, Float_t max) |
554 | { |
555 | //Sets range of C33 parameter of covariance matrix of the track |
556 | //it defines uncertainty of the momentum |
557 | fC33Min = min; |
558 | fC33Max = max; |
559 | } |
560 | /********************************************************************/ |
561 | |
562 | void AliHBTReaderESD::SetC44Range(Float_t min, Float_t max) |
563 | { |
564 | //Sets range of C44 parameter of covariance matrix of the track |
565 | //it defines uncertainty of the momentum |
566 | fC44Min = min; |
567 | fC44Max = max; |
568 | } |