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Comparing UserCode/cbrown/AnalysisFramework/Plotting/Modules/Systematics.C (file contents):
Revision 1.23 by pablom, Wed Aug 31 10:21:17 2011 UTC vs.
Revision 1.41 by buchmann, Wed Oct 19 10:36:31 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 190 | Line 192 | void master_formula(std::vector<float> e
192   // Get normalization factor for the PDFs
193   float get_norm_pdf_factor(TTree *events, int k) {
194  
195 <  TH1F *haux = new TH1F("haux", "", 1000, 0, 15);
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 factor = haux->Integral();
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  
# Line 243 | Line 249 | void PeakError(TTree *events,float &resu
249          TString npeakup("("+TString(mcjzb)+"+"+TString(any2string(TMath::Abs(peakerr)))+")"+ngeq_or_leq()+"-"+TString(any2string(jzbSel)));
250          TString npeakdown("("+TString(mcjzb)+"-"+TString(any2string(TMath::Abs(peakerr)))+")"+ngeq_or_leq()+"-"+TString(any2string(jzbSel)));
251          TString npeakcentral("("+TString(mcjzb)+")"+ngeq_or_leq()+"-"+TString(any2string(jzbSel)));
246        
252          nBins = 1;
253          string informalname="PeakErrorCalculation";
254          float resup,resdown,rescent;
# Line 266 | Line 271 | void PeakError(TTree *events,float &resu
271            else if(i==1) resdown=res;
272            else if(i==2) resup=res;
273          }
274 <        if(TMath::Abs(rescent-resup)>TMath::Abs(rescent-resdown)) result=(TMath::Abs(rescent-resup)/rescent);
275 <        else result=(TMath::Abs(rescent-resdown)/rescent);
274 >        if(TMath::Abs(rescent-resup)>TMath::Abs(rescent-resdown)) result=(TMath::Abs(rescent-resup)/(float)rescent);
275 >        else result=(TMath::Abs(rescent-resdown)/(float)rescent);
276   }
277  
278   //____________________________________________________________________________________
279   // Total selection efficiency (MC)
280 < void MCefficiency(TTree *events,float &result, float &resulterr,string mcjzb,bool requireZ,int Neventsinfile, string addcut="", int k = 0) {
281 <        
280 > //returns the efficiency WITHOUT signal contamination, and the result and resulterr contain the result and the corresponding error
281 > Value MCefficiency(TTree *events,float &result, float &resulterr,string mcjzb,bool requireZ,int Neventsinfile, string addcut="", int k = 0) {
282 >        if(!events) {
283 >           write_error(__FUNCTION__,"Tree passed for efficiency calculation is invalid!");
284 >           result=0;resulterr=0;
285 >           return Value(0,0);
286 >        }
287          char jzbSelStr[256]; sprintf(jzbSelStr,"%f",jzbSel);
288          // All acceptance cuts at gen. level
289          //TCut kbase("abs(genMll-91.2)<20&&genNjets>2&&genZPt>0&&genJZB"+geq_or_leq()+TString(jzbSelStr)+"&&genId1==-genId2");
# Line 293 | Line 303 | void MCefficiency(TTree *events,float &r
303          string newPosSide = "(" + sposSide + ")*" + svar;
304          string newNegSide = "(" + snegSide + ")*" + svar;
305  
306 <        events->Draw(mcjzbexpression.c_str(), newPosSide.c_str(),"goff");
307 <        Float_t sel = events->GetSelectedRows();
306 >        TH1F *effh= new TH1F("effh","effh",1,-14000,14000);
307 >        if(k>=0)events->Draw((mcjzbexpression+">>effh").c_str(), newPosSide.c_str(),"goff");
308 >        else events->Draw((mcjzbexpression+">>effh").c_str(), sposSide.c_str(),"goff");
309 >        Float_t sel = effh->Integral();
310          Float_t nsel=0;
311          if(ConsiderSignalContaminationForLimits) {
312 <          events->Draw(mcjzbexpression.c_str(), newNegSide.c_str(),"goff");
313 <          nsel = events->GetSelectedRows();
312 >          if(k>=0)events->Draw((mcjzbexpression+">>effh").c_str(), newNegSide.c_str(),"goff");
313 >          else events->Draw((mcjzbexpression+">>effh").c_str(), snegSide.c_str(),"goff");
314 >          nsel = effh->Integral();
315          }
316          //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.
317 <        float normFactor = get_norm_pdf_factor(events, k);
317 >        float normFactor = 1;
318 >        if(k>=0) get_norm_pdf_factor(events, k);
319          sel = sel/normFactor;
320          nsel = nsel/normFactor;
321  
# Line 309 | Line 323 | void MCefficiency(TTree *events,float &r
323   //      Float_t tot = events->GetSelectedRows();
324          Float_t tot = Neventsinfile;
325          
326 +        Value result_wo_signalcont;
327 +
328          if(ConsiderSignalContaminationForLimits) {
329            result=(sel-nsel)/tot;
330            resulterr=(1.0/tot)*TMath::Sqrt(sel+nsel+(sel-nsel)*(sel-nsel)/tot);
331 +          result_wo_signalcont=Value(sel/tot,TMath::Sqrt(sel/tot*(1+sel/tot)/tot));
332          } else {//no signal contamination considered:
333            result=(sel)/tot;
334            resulterr=TMath::Sqrt(sel/tot*(1+sel/tot)/tot);
335 +          result_wo_signalcont=Value(result,resulterr);
336          }
337 <        if(!automatized) dout << "  MC efficiency: " << result << "+-" << resulterr << "  ( JZB>" << jzbSel << " : " << sel << " , JZB<-" << jzbSel << " : " << nsel << " and nevents=" << tot << ")" << std::endl;
337 >        if(!automatized && k>0 ) dout << "PDF assessment (" << k << ") : ";
338 >        if(!automatized) dout << "  MC efficiency: " << result << "+-" << resulterr << "  ( JZB>" << jzbSel << " : " << sel << " , JZB<-" << jzbSel << " : " << nsel << " and nevents=" << tot << ") with normFact=" << normFactor << std::endl;
339 >        delete effh;
340 >        return result_wo_signalcont;
341 > }
342 >
343 >
344 > //____________________________________________________________________________________
345 > // Selection efficiency for one process (MC)
346 > vector<float> processMCefficiency(TTree *events,string mcjzb,bool requireZ,int Neventsinfile, string addcut) {
347 >  vector<float> process_efficiencies;
348 >  for(int iprocess=0;iprocess<=10;iprocess++) {
349 >    float this_process_efficiency,efferr;
350 >    stringstream addcutplus;
351 >    addcutplus<<addcut<<"&&(process=="<<iprocess<<")";
352 >    MCefficiency(events,this_process_efficiency, efferr,mcjzb,requireZ,Neventsinfile, addcutplus.str(),-1);
353 >    process_efficiencies.push_back(this_process_efficiency);
354 >  }
355 >  return process_efficiencies;
356   }
357 +        
358  
359   void JZBefficiency(TTree *events, string informalname, float &jzbeff, float &jzbefferr, bool requireZ, string addcut="") {
360          TCut kbase("abs(genMll-91.2)<20&&genNjets>2&&genZPt>0&&abs(mll-91.2)<20&&((id1+1)*(id2+1)*ch1*ch2)!=-2");
# Line 387 | Line 424 | void doJZBscale(TTree *events, float &do
424          Float_t eff  = Interpolate(jzbSel,hist);
425          Float_t effp = Interpolate(jzbSel*(1.+systematic),hist);
426          Float_t effm = Interpolate(jzbSel*(1.-systematic),hist);
427 <        if(!automatized) dout << "  efficiency at JZB==" << jzbSel*(1.+systematic)  << "(-"<<syst*100<<"%) : " << effp << " (" << ((effp-eff)/eff)*100. << "%)"  << std::endl;
427 >        if(!automatized) dout << "  efficiency at JZB==" << jzbSel*(1.+systematic)  << "(-"<<systematic*100<<"%) : " << effp << " (" << ((effp-eff)/eff)*100. << "%)"  << std::endl;
428          if(!automatized) dout << "  efficiency at JZB==" << jzbSel  << ": " << eff << std::endl;
429 <        if(!automatized) dout << "  efficiency at JZB==" << jzbSel*(1.-systematic)  << "(-"<<syst*100<<"%) : " << effm << " (" << ((effm-eff)/eff)*100. << "%)"  << std::endl;
429 >        if(!automatized) dout << "  efficiency at JZB==" << jzbSel*(1.-systematic)  << "(-"<<systematic*100<<"%) : " << effm << " (" << ((effm-eff)/eff)*100. << "%)"  << std::endl;
430          up=((effp-eff)/eff);
431          down=((effm-eff)/eff);
432   }
# Line 413 | Line 450 | void JZBresponse(TTree *events, bool req
450          hJzbResp->SetMinimum(0.2);
451          hJzbResp->Fit("pol0","Q");
452          TF1 *fittedfunction = hJzbResp->GetFunction("pol0");
453 <        resp=fittedfunction->GetParameter(0);
454 <        resperr=fittedfunction->GetParError(0);
455 <        if(!automatized) dout << "  Response: " << resp << " +/- " << resperr << endl;
453 >        if(!fittedfunction) {
454 >                // in case there are not enough points passing our selection
455 >                cout << "OOPS response function invalid, assuming 100% error !!!!" << endl;
456 >                resp=1;
457 >                resperr=1;
458 >        } else {
459 >                resp=fittedfunction->GetParameter(0);
460 >                resperr=fittedfunction->GetParError(0);
461 >                if(!automatized) dout << "  Response: " << resp << " +/- " << resperr << endl;
462 >        }
463          delete hJzbResp;
464   }
465  
466  
467   //________________________________________________________________________________________
468   // PDF uncertainty  
469 < float get_pdf_uncertainty(TTree *events, string mcjzb, bool requireZ, int Neventsinfile, string addcut="") {
426 <
427 <  int numberOfPDFs = 44;
469 > float get_pdf_uncertainty(TTree *events, string mcjzb, bool requireZ, int Neventsinfile, int NPdfs, string addcut="") {
470    std::vector<float> efficiency;
471 <  for(int k = 1; k < numberOfPDFs; k++) {
471 >  for(int k = 1; k < NPdfs; k++) {
472      float result, resulterr;
473      MCefficiency(events, result, resulterr, mcjzb, requireZ, Neventsinfile, addcut, k);  
474      efficiency.push_back(result);
475    }
476 <  float errHi, errLow;
476 >  float errHi, errLow,err;
477    master_formula(efficiency, errHi, errLow);
478 <  if(errHi>errLow) return errHi;
479 <  return errLow;
478 >  err=errLow;
479 >  if(errHi>errLow) err=errHi;
480 >  if(!automatized) dout << "  Uncertainty from PDF: " << errLow << " (low) and " << errHi << "(high) ---> Picked " << err << endl;
481 >  return err;
482  
483   }
484  
485 <
485 > int get_npdfs(TTree *events) {
486 >  int NPDFs;
487 >  events->SetBranchAddress("NPdfs",&NPDFs);
488 >  events->GetEntry(1);
489 >  return NPDFs;
490 > }
491 >  
492  
493   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) {
444  
494    float JetEnergyScaleUncert=0.1;
495    float JZBScaleUncert=0.1;
496    mcjzbexpression=mcjzb;
497 <  float triggereff=4.0/100;// in range [0,1]
497 >  float triggereff=5.0/100;// in range [0,1]
498    dout << "Trigger efficiency not implemented in this script  yet, still using external one" << endl;
499    float leptonseleff=2.0/100;// in range [0,1]
500 +  leptonseleff=TMath::Sqrt(leptonseleff*leptonseleff+leptonseleff*leptonseleff); // because the 2% is per lepton
501    dout << "Lepton selection efficiency not implemented in this script  yet, still using external one" << endl;
502    
503 +  int NPdfs=0;
504 +  if(ismSUGRA) NPdfs = get_npdfs(events);
505 +  
506    float mceff,mcefferr,jzbeff,jzbefferr;
507    if(!automatized) dout << "MC efficiencies:" << endl;
508 <  MCefficiency(events,mceff,mcefferr,mcjzb,requireZ,Neventsinfile,addcut);
509 <  JZBefficiency(events,informalname,jzbeff,jzbefferr,requireZ,addcut);
508 >  Value mceff_nosigcont = MCefficiency(events,mceff,mcefferr,mcjzb,requireZ,Neventsinfile,addcut,-1);
509 >  if(!automatized) cout << "   Without signal contamination, we find an efficiency of " << mceff_nosigcont << endl;
510 >
511 >  if(PlottingSetup::computeJZBefficiency) JZBefficiency(events,informalname,jzbeff,jzbefferr,requireZ,addcut);
512    if(!automatized) dout << "JZB efficiency: " << jzbeff << "+/-" << jzbefferr << endl;
513    
514 +
515 +  if(!(mceff>0)) write_warning(__FUNCTION__,"Efficiency is zero - the systematics will not be computed!");
516 +
517 +
518    if(!automatized) dout << "Error from Peak position:" << endl;
519    float sysfrompeak=0;
520 <  PeakError(events,sysfrompeak,mcjzb,peakerror,addcut);
520 >  if(mceff>0) PeakError(events,sysfrompeak,mcjzb,peakerror,addcut);
521 >  else dout << "Not computed." << endl;
522      
523    if(!automatized) dout << "Jet energy scale: " << std::endl;
524 <  float jesup,jesdown;
525 <  JZBjetScale(events,jesdown,jesup,informalname,requireZ,addcut,JetEnergyScaleUncert);
524 >  float jesup=0,jesdown=0;
525 >  if(mceff>0) JZBjetScale(events,jesdown,jesup,informalname,requireZ,addcut,JetEnergyScaleUncert);
526 >  else dout << "Not computed." << endl;
527    
528    if(!automatized) dout << "JZB scale: " << std::endl;
529 <  float scaleup,scaledown,scalesyst;
530 <  doJZBscale(events,scaledown,scaleup,scalesyst,JZBScaleUncert,informalname,requireZ,addcut);
529 >  float scaleup=0,scaledown=0,scalesyst=0;
530 >  if(mceff>0) doJZBscale(events,scaledown,scaleup,scalesyst,JZBScaleUncert,informalname,requireZ,addcut);
531 >  else dout << "Not computed." << endl;
532    
533    if(!automatized) dout << "JZB response: " << std::endl;
534 <  float resp,resperr;
535 <  JZBresponse(events,requireZ,resp,resperr,addcut);
534 >  float resp=0,resperr=0;
535 >  if(PlottingSetup::computeJZBresponse && mceff>0) {
536 >        if(!automatized) dout << "JZB response: " << std::endl;
537 >        JZBresponse(events,requireZ,resp,resperr,addcut);
538 >  }
539  
540    if(!automatized) dout << "Pileup: " << std::endl;
541 <  float resolution=pileup(events,requireZ,informalname,addcut);
541 >  float resolution=0;
542 >  if(mceff>0) resolution=pileup(events,requireZ,informalname,addcut);
543 >  else dout << "Not computed." << endl;
544  
545    float PDFuncert=0;
546 <  if(ismSUGRA) PDFuncert = get_pdf_uncertainty(events, mcjzb, requireZ, Neventsinfile, addcut);
546 >  if(!automatized&&mceff>0) dout << "Assessing PDF uncertainty: " << std::endl;
547 >  if(ismSUGRA&&mceff>0) PDFuncert = get_pdf_uncertainty(events, mcjzb, requireZ, Neventsinfile, NPdfs, addcut);
548  
549    dout << "_______________________________________________" << endl;
550    dout << "                 SUMMARY FOR " << informalname << " with JZB>" << jzbSel << "  (all in %) ";
# Line 489 | Line 557 | void do_systematics_for_one_file(TTree *
557    dout << "JZB Scale Uncert: " << scaledown << " " << scaleup << endl; // in range [0,1]
558    dout << "Resolution : " << resolution << endl; // in range [0,1]
559    dout << "From peak : " << sysfrompeak << endl; // in range [0,1]
560 <  dout << "PDF uncertainty  : " << PDFuncert << " (not yet included below) " << endl; // in range [0,1]
561 <  dout << "JZB efficiency: " << jzbeff << "+/-" << jzbefferr << " (not yet included below) " << endl; // in range [0,1]
562 <  dout << "JZB response  : " << resp << " +/-" << resperr << " (not yet included below) " << endl; // in range [0,1]
560 >  if(ismSUGRA) dout << "PDF uncertainty  : " << PDFuncert << endl; // in range [0,1]
561 >  if(PlottingSetup::computeJZBefficiency) dout << "JZB efficiency: " << jzbeff << "+/-" << jzbefferr << " (not yet included below) " << endl; // in range [0,1]
562 >  if(PlottingSetup::computeJZBresponse)dout << "JZB response  : " << resp << " +/-" << resperr << " (not yet included below) " << endl; // in range [0,1]
563    
564    float toterr=0;
565    toterr+=(triggereff)*(triggereff);
# Line 507 | Line 575 | void do_systematics_for_one_file(TTree *
575    
576    dout << "FINAL RESULT : " << 100*mceff << " +/- "<< 100*mcefferr << " (stat) +/- " << 100*systerr << " (syst)   %" << endl;
577    dout << "     we thus use the sqrt of the sum of the squares of the stat & syst err, which is : " << 100*toterr << endl;
578 +  dout << "_______________________________________________" << endl;
579    
580    //Do not modify the lines below or mess with the order; this order is expected by all limit calculating functions!
581    vector<float> res;
# Line 518 | Line 587 | void do_systematics_for_one_file(TTree *
587    if(fabs(jesup)>fabs(jesdown)) res.push_back(fabs(jesup)); else res.push_back(fabs(jesdown));
588    if(fabs(scaleup)>fabs(scaledown)) res.push_back(fabs(scaleup)); else res.push_back(fabs(scaledown));
589    res.push_back(fabs(resolution));
590 +  res.push_back(mceff_nosigcont.getValue());
591 +  res.push_back(mceff_nosigcont.getError());
592    if(ismSUGRA) res.push_back(PDFuncert);
593    results.push_back(res);
594   }

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