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Comparing UserCode/cbrown/AnalysisFramework/Plotting/Modules/Systematics.C (file contents):
Revision 1.18 by buchmann, Wed Aug 17 17:07:18 2011 UTC vs.
Revision 1.31 by buchmann, Wed Sep 7 13:30:58 2011 UTC

# Line 1 | Line 1
1   #include <iostream>
2   #include <vector>
3   #include <sys/stat.h>
4 + #include <algorithm>
5 + #include <cmath>
6  
7   #include <TMath.h>
8   #include <TColor.h>
# Line 157 | Line 159 | TH1F* plotEff(TTree* events, TCut kbase,
159  
160  
161   //________________________________________________________________________________________
162 + // Master Formula
163 + void master_formula(std::vector<float> eff, float &errHi, float &errLo) {
164 +
165 +  float x0 = eff[0];
166 +  float deltaPos = 0, deltaNeg = 0;
167 +  for(int k = 0; k < (eff.size()-1)/2; k++) {
168 +    float xneg = eff[2*k+2];
169 +    float xpos = eff[2*k+1];
170 +    if(xpos-x0>0 || xneg-x0>0) {
171 +      if(xpos-x0 > xneg-x0) {
172 +        deltaPos += (xpos-x0)*(xpos-x0);
173 +      } else {
174 +        deltaPos += (xneg-x0)*(xneg-x0);
175 +      }
176 +    }
177 +    if(x0-xpos>0 || x0-xneg>0) {
178 +      if(x0-xpos > x0-xneg) {
179 +        deltaNeg += (xpos-x0)*(xpos-x0);
180 +      } else {
181 +        deltaNeg += (xneg-x0)*(xneg-x0);
182 +      }
183 +    }
184 +  }
185 +  errHi = sqrt(deltaPos);
186 +  errLo = sqrt(deltaNeg);
187 +
188 + }
189 +
190 +
191 + //________________________________________________________________________________________
192 + // Get normalization factor for the PDFs
193 + float get_norm_pdf_factor(TTree *events, int k) {
194 +
195 +  TH1F *haux = new TH1F("haux", "", 10000, 0, 5);
196 +  char nameVar[20];
197 +  sprintf(nameVar, "pdfW[%d]", k);
198 +  events->Project("haux", nameVar);
199 +  float thisW = haux->Integral();
200 +  events->Project("haux", "pdfW[0]");
201 +  float normW = haux->Integral();
202 +
203 +  float factor=thisW/normW;
204 +
205 +  delete haux;
206 +
207 +  return factor;
208 +
209 + }
210 +
211 +
212 +
213 + //________________________________________________________________________________________
214   // Pile-up efficiency
215   float pileup(TTree *events, bool requireZ, string informalname, string addcut="",Float_t myJzbMax = 140. ) {
216          nBins = 16;
# Line 224 | Line 278 | void PeakError(TTree *events,float &resu
278  
279   //____________________________________________________________________________________
280   // Total selection efficiency (MC)
281 < void MCefficiency(TTree *events,float &result, float &resulterr,string mcjzb,bool requireZ,int Neventsinfile, string addcut="") {
281 > void MCefficiency(TTree *events,float &result, float &resulterr,string mcjzb,bool requireZ,int Neventsinfile, string addcut="", int k = 0) {
282          
283          char jzbSelStr[256]; sprintf(jzbSelStr,"%f",jzbSel);
284          // All acceptance cuts at gen. level
# Line 235 | Line 289 | void MCefficiency(TTree *events,float &r
289          // Corresponding reco. cuts
290          TCut ksel("pfJetGoodNum>2&&abs(mll-91.2)<20&&id1==id2&&"+TString(mcjzb)+geq_or_leq()+TString(jzbSelStr));
291          TCut ksel2("pfJetGoodNum>2&&abs(mll-91.2)<20&&id1==id2&&"+TString(mcjzb)+ngeq_or_leq()+TString("-")+TString(jzbSelStr));
292 <        events->Draw(mcjzbexpression.c_str(),kbase&&ksel,"goff");
293 <        Float_t sel = events->GetSelectedRows();
294 <        events->Draw(mcjzbexpression.c_str(),kbase&&ksel2,"goff");
295 <        Float_t nsel = events->GetSelectedRows();
292 >        TCut posSide = kbase&&ksel;
293 >        TCut negSide = kbase&&ksel2;
294 >        string sposSide(posSide);
295 >        string snegSide(negSide);
296 >        char var[20];
297 >        sprintf(var, "pdfW[%d]", k);
298 >        string svar(var);
299 >        string newPosSide = "(" + sposSide + ")*" + svar;
300 >        string newNegSide = "(" + snegSide + ")*" + svar;
301 >
302 >        TH1F *effh= new TH1F("effh","effh",1,-14000,14000);
303 >        if(k>=0)events->Draw((mcjzbexpression+">>effh").c_str(), newPosSide.c_str(),"goff");
304 >        else events->Draw((mcjzbexpression+">>effh").c_str(), sposSide.c_str(),"goff");
305 >        Float_t sel = effh->Integral();
306 >        Float_t nsel=0;
307 >        if(ConsiderSignalContaminationForLimits) {
308 >          if(k>=0)events->Draw((mcjzbexpression+">>effh").c_str(), newNegSide.c_str(),"goff");
309 >          else events->Draw((mcjzbexpression+">>effh").c_str(), snegSide.c_str(),"goff");
310 >          nsel = effh->Integral();
311 >        }
312 >        //Corrections due to normalization in the PDF. This has to be applied as well to the number of events in a file if the definition changes at some point.
313 >        float normFactor = 1;
314 >        if(k>=0) get_norm_pdf_factor(events, k);
315 >        sel = sel/normFactor;
316 >        nsel = nsel/normFactor;
317 >
318   //      events->Draw(mcjzbexpression.c_str(),kbase,"goff");
319   //      Float_t tot = events->GetSelectedRows();
320          Float_t tot = Neventsinfile;
321          
322 <        result=(sel-nsel)/tot;
323 <        resulterr=TMath::Sqrt(sel/tot*(1-sel/tot)/tot);
324 <        dout << "  MC efficiency: " << result << "+-" << resulterr << "  ( JZB>" << jzbSel << " : " << sel << " , JZB<-" << jzbSel << " : " << nsel << " and nevents=" << tot << ")" << std::endl;
322 >        if(ConsiderSignalContaminationForLimits) {
323 >          result=(sel-nsel)/tot;
324 >          resulterr=(1.0/tot)*TMath::Sqrt(sel+nsel+(sel-nsel)*(sel-nsel)/tot);
325 >        } else {//no signal contamination considered:
326 >          result=(sel)/tot;
327 >          resulterr=TMath::Sqrt(sel/tot*(1+sel/tot)/tot);
328 >        }
329 >        if(!automatized) dout << "  MC efficiency: " << result << "+-" << resulterr << "  ( JZB>" << jzbSel << " : " << sel << " , JZB<-" << jzbSel << " : " << nsel << " and nevents=" << tot << ") with normFact=" << normFactor << std::endl;
330 >        delete effh;
331   }
332  
333 +
334 + //____________________________________________________________________________________
335 + // Selection efficiency for one process (MC)
336 + vector<float> processMCefficiency(TTree *events,string mcjzb,bool requireZ,int Neventsinfile, string addcut) {
337 +  vector<float> process_efficiencies;
338 +  for(int iprocess=0;iprocess<=10;iprocess++) {
339 +    float this_process_efficiency,efferr;
340 +    stringstream addcutplus;
341 +    addcutplus<<addcut<<"&&(process=="<<iprocess<<")";
342 +    MCefficiency(events,this_process_efficiency, efferr,mcjzb,requireZ,Neventsinfile, addcutplus.str(),-1);
343 +    process_efficiencies.push_back(this_process_efficiency);
344 +  }
345 +  return process_efficiencies;
346 + }
347 +        
348 +
349   void JZBefficiency(TTree *events, string informalname, float &jzbeff, float &jzbefferr, bool requireZ, string addcut="") {
350          TCut kbase("abs(genMll-91.2)<20&&genNjets>2&&genZPt>0&&abs(mll-91.2)<20&&((id1+1)*(id2+1)*ch1*ch2)!=-2");
253        cout << "Getting started with JZB efficiency" << endl;
351          if(addcut!="") kbase=kbase&&addcut.c_str();//this is mostly for SUSY scans (adding requirements on masses)
352          if(requireZ) kbase=kbase&&"TMath::Abs(genMID)==23";
353          TH1F* hLM4 = plotEff(events,kbase,informalname);
# Line 350 | Line 447 | void JZBresponse(TTree *events, bool req
447   }
448  
449  
450 < void do_systematics_for_one_file(TTree *events,int Neventsinfile,string informalname, vector<vector<float> > &results,string mcjzb,string datajzb,float peakerror,bool requireZ=false, string addcut="") {
450 > //________________________________________________________________________________________
451 > // PDF uncertainty  
452 > float get_pdf_uncertainty(TTree *events, string mcjzb, bool requireZ, int Neventsinfile, int NPdfs, string addcut="") {
453 >  std::vector<float> efficiency;
454 >  for(int k = 1; k < NPdfs; k++) {
455 >    float result, resulterr;
456 >    MCefficiency(events, result, resulterr, mcjzb, requireZ, Neventsinfile, addcut, k);  
457 >    efficiency.push_back(result);
458 >  }
459 >  float errHi, errLow,err;
460 >  master_formula(efficiency, errHi, errLow);
461 >  err=errLow;
462 >  if(errHi>errLow) err=errHi;
463 >  if(!automatized) dout << "  Uncertainty from PDF: " << errLow << " (low) and " << errHi << "(high) ---> Picked " << err << endl;
464 >  return err;
465 >
466 > }
467 >
468 > int get_npdfs(TTree *events) {
469 >  int NPDFs;
470 >  events->SetBranchAddress("NPdfs",&NPDFs);
471 >  events->GetEntry(1);
472 >  return NPDFs;
473 > }
474    
475 +
476 + void do_systematics_for_one_file(TTree *events,int Neventsinfile,string informalname, vector<vector<float> > &results,string mcjzb,string datajzb,float peakerror,bool requireZ=false, string addcut="", bool ismSUGRA=false) {
477    float JetEnergyScaleUncert=0.1;
478    float JZBScaleUncert=0.1;
479    mcjzbexpression=mcjzb;
480 <  float triggereff=4.0/100;// in range [0,1]
480 >  float triggereff=5.0/100;// in range [0,1]
481    dout << "Trigger efficiency not implemented in this script  yet, still using external one" << endl;
482    float leptonseleff=2.0/100;// in range [0,1]
483    dout << "Lepton selection efficiency not implemented in this script  yet, still using external one" << endl;
484    
485 +  int NPdfs=0;
486 +  if(ismSUGRA) NPdfs = get_npdfs(events);
487 +  
488    float mceff,mcefferr,jzbeff,jzbefferr;
489    if(!automatized) dout << "MC efficiencies:" << endl;
490 <  MCefficiency(events,mceff,mcefferr,mcjzb,requireZ,Neventsinfile,addcut);
490 >  MCefficiency(events,mceff,mcefferr,mcjzb,requireZ,Neventsinfile,addcut,-1);
491    JZBefficiency(events,informalname,jzbeff,jzbefferr,requireZ,addcut);
492    if(!automatized) dout << "JZB efficiency: " << jzbeff << "+/-" << jzbefferr << endl;
493    
# Line 384 | Line 509 | void do_systematics_for_one_file(TTree *
509  
510    if(!automatized) dout << "Pileup: " << std::endl;
511    float resolution=pileup(events,requireZ,informalname,addcut);
512 <  
512 >
513 >  float PDFuncert=0;
514 >  if(ismSUGRA) PDFuncert = get_pdf_uncertainty(events, mcjzb, requireZ, Neventsinfile, NPdfs, addcut);
515 >
516    dout << "_______________________________________________" << endl;
517    dout << "                 SUMMARY FOR " << informalname << " with JZB>" << jzbSel << "  (all in %) ";
518    if(addcut!="") dout << "With additional cut: " << addcut;
# Line 396 | Line 524 | void do_systematics_for_one_file(TTree *
524    dout << "JZB Scale Uncert: " << scaledown << " " << scaleup << endl; // in range [0,1]
525    dout << "Resolution : " << resolution << endl; // in range [0,1]
526    dout << "From peak : " << sysfrompeak << endl; // in range [0,1]
527 +  if(ismSUGRA) dout << "PDF uncertainty  : " << PDFuncert << endl; // in range [0,1]
528    dout << "JZB efficiency: " << jzbeff << "+/-" << jzbefferr << " (not yet included below) " << endl; // in range [0,1]
529    dout << "JZB response  : " << resp << " +/-" << resperr << " (not yet included below) " << endl; // in range [0,1]
530    
# Line 406 | Line 535 | void do_systematics_for_one_file(TTree *
535    if(fabs(scaleup)>fabs(scaledown)) toterr+=(scaleup*scaleup); else toterr+=(scaledown*scaledown);
536    toterr+=(resolution*resolution);
537    toterr+=(sysfrompeak*sysfrompeak);
538 +  if(ismSUGRA) toterr+=(PDFuncert*PDFuncert);
539    dout << "TOTAL SYSTEMATICS: " << TMath::Sqrt(toterr) << " --> " << TMath::Sqrt(toterr)*mceff << endl;
540 <  toterr=TMath::Sqrt(toterr)*mceff;
541 <  dout << "FINAL RESULT : " << 100*mceff << " +/- "<< 100*mcefferr << " (stat) +/- " << 100*toterr << " (syst)   %" << endl;
542 <  dout << "     we thus use the sqrt of the sum of the squares which is : " << 100*toterr << endl;
540 >  float systerr=TMath::Sqrt(toterr)*mceff;
541 >  toterr=TMath::Sqrt(toterr*mceff*mceff+mcefferr*mcefferr);//also includes stat err!
542 >  
543 >  dout << "FINAL RESULT : " << 100*mceff << " +/- "<< 100*mcefferr << " (stat) +/- " << 100*systerr << " (syst)   %" << endl;
544 >  dout << "     we thus use the sqrt of the sum of the squares of the stat & syst err, which is : " << 100*toterr << endl;
545 >  
546 >  //Do not modify the lines below or mess with the order; this order is expected by all limit calculating functions!
547    vector<float> res;
548    res.push_back(jzbSel);
549    res.push_back(mceff);
# Line 419 | Line 553 | void do_systematics_for_one_file(TTree *
553    if(fabs(jesup)>fabs(jesdown)) res.push_back(fabs(jesup)); else res.push_back(fabs(jesdown));
554    if(fabs(scaleup)>fabs(scaledown)) res.push_back(fabs(scaleup)); else res.push_back(fabs(scaledown));
555    res.push_back(fabs(resolution));
556 +  if(ismSUGRA) res.push_back(PDFuncert);
557    results.push_back(res);
558   }
559  

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