Nus18SystsTauLoad.C

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/////////////////////////////////////////////////////////////////////
// Tau systematics for Nus18
//
// Author: Sijith Edayath
// Modified by Mike Wallbank (wallbank@fnal.gov)
/////////////////////////////////////////////////////////////////////

#include "CAFAna/Analysis/Prod4Loaders.h"
#include "CAFAna/Core/Loaders.h"
#include "CAFAna/Core/SystShifts.h"
#include "CAFAna/Core/Utilities.h"
#include "CAFAna/Cuts/Cuts.h"
#include "NuXAna/Cuts/NusCuts18.h"
#include "3FlavorAna/Cuts/NumuCuts2018.h"
#include "CAFAna/Cuts/SpillCuts.h"
#include "CAFAna/Decomp/CheatDecomp.h"
#include "CAFAna/Decomp/ProportionalDecomp.h"
#include "CAFAna/Prediction/PredictionGenerator.h"
#include "NuXAna/Prediction/PredictionGeneratorNuX.h"
#include "NuXAna/Prediction/NDPredictionSterile.h"
#include "NuXAna/Prediction/FDPredictionSterile.h"
#include "NuXAna/Prediction/PredictionSterile.h"
#include "CAFAna/Systs/BeamSysts.h"
#include "CAFAna/Systs/Systs.h"
#include "CAFAna/Vars/GenieWeights.h"
#include "CAFAna/Vars/HistAxes.h"
#include "NuXAna/Vars/HistAxes.h"
#include "CAFAna/Vars/PPFXWeights.h"

#include "NuXAna/macros/Nus18/Nus18Systs/HelperSyst18/NuSSystFunctions18.h"

using namespace ana;

/// Run systematics for Tau scale
void Nus18SystsTauLoad(TString opt) {

  TH1::AddDirectory(0);
  const Var kReweight = kXSecCVWgt2018*kPPFXFluxCVWgt;

  // Get options
  ECAFType cafType;
  Loaders::FluxType fluxType;
  bool extrap = false;
  if (opt.Contains("caf", TString::kIgnoreCase))
    cafType = ECAFType::kFullCAF;
  else if (opt.Contains("concat", TString::kIgnoreCase))
    cafType = ECAFType::kNusConcat;
  else {
    std::cout << "ECAFType required: caf or concat" << std::endl;
    abort();
  }
  if (opt.Contains("fhc", TString::kIgnoreCase))
    fluxType = Loaders::FluxType::kFHC;
  else if (opt.Contains("rhc", TString::kIgnoreCase))
    fluxType = Loaders::FluxType::kRHC;
  else {
    std::cout << "FluxType required: fhc or rhc" << std::endl;
    abort();
  }
  if (opt.Contains("extrap", TString::kIgnoreCase))
    extrap = true;

  // Set up the loaders
  Loaders* loaders = new Prod4NomLoaders(cafType, fluxType);
  loaders->SetSpillCut(kStandardSpillCuts);

  // Vector of sigmas, levels to set each systematic
  const std::vector<int> sigmas{-1, +1};

  // Get the labels for Tau systematics
  std::map<std::string, std::string> shiftLabels;
  shiftLabels["Tau"] = "Tau";
  const Var kTauP = kReweight*kFDTauWgtP;
  const Var kTauM = kReweight*kFDTauWgtM;

  // Define map of systematic objects, indexed by same labels as previous map
  std::map<std::string, std::map<int, const Var*> > systematics;
  systematics["Tau"][-1] = &kTauM;
  systematics["Tau"][+1] = &kTauP;

  // Define a map of samples and cuts/axes to set them up
  // Each sample, essentially, is a way to set up the analysis
  HistAxis AxisRecoE = kNus18AxisE;
  std::map<std::string, std::pair<HistAxis*, std::pair<Cut*, Cut*> > > cut_samples;
  cut_samples["Nus18"] = std::make_pair(&AxisRecoE, std::make_pair(new Cut(kNus18ND), new Cut(kNus18FD)));

  // Set up maps to the decompositions/predictions (each flavor component)
  // Nominal maps are indexed purely by sample label
  // Shifted maps are indexed by sample label, systematic label, then sigma of the shift
  std::map<std::string, NDPredictionSterile*> predsND_nominal;
  std::map<std::string, FDPredictionSterile*> predsFD_nominal;
  std::map<std::string, PredictionSterile*>   predsExtrap_nominal;
  std::map<std::string, std::map<std::string, std::map<int, NDPredictionSterile*> > > predsND_shifted;
  std::map<std::string, std::map<std::string, std::map<int, FDPredictionSterile*> > > predsFD_shifted;
  std::map<std::string, std::map<std::string, std::map<int, PredictionSterile*> > >   predsExtrap_shifted;

  // Set up the actual decompositions/predictions
  // sample.first = the sample label
  // shiftLabel.first = the systematic shift label
  // sample.second.first = the sample HistAxis
  // sample.second.second = the sample Cut
  // syst.first = the integer number of sigmas for the shift
  // syst.second = the systematic being shifted
  for (const auto& sample : cut_samples) {

    // const NDPredictionGenerator gennd(*sample.second.first, *sample.second.second.first, kNoShift, kReweight);
    // const FDPredictionGenerator genfd(*sample.second.first, *sample.second.second.second, kNoShift, kReweight);
    SterileGenerator* genExtrap;
    if (extrap)
      genExtrap = new SterileGenerator(*sample.second.first, kNus18BinsNumuCCAxis,
                                       *sample.second.second.second, *sample.second.second.first,    
                                       kNumuCutND2018, kNoShift, kReweight);

    // Set up the nominal decompositions
    // Only one is needed per sample
    // predsND_nominal[sample.first] = (NDPredictionSterile*)gennd.Generate(*loaders).release();
    // predsFD_nominal[sample.first] = (FDPredictionSterile*)genfd.Generate(*loaders).release();
    if (extrap)
      predsExtrap_nominal[sample.first] = (PredictionSterile*)genExtrap->Generate(*loaders).release();

    if (extrap)
      delete genExtrap;

    // Set up the shifted decompositions
    // One is needed for every sample, systematic, and sigma level
    for(const auto& shiftLabel : shiftLabels) {
      for(const auto& syst : systematics[shiftLabel.first]) {

        // Create new prediction generators with correct reweights
        // const NDPredictionGenerator gennd_tau
        //   (*sample.second.first, *sample.second.second.first, kNoShift, *syst.second);
        // const FDPredictionGenerator genfd_tau
        //   (*sample.second.first, *sample.second.second.second, kNoShift, *syst.second);
        SterileGenerator* genExtrap_tau;
        if (extrap)
          genExtrap_tau = new SterileGenerator(*sample.second.first, kNus18BinsNumuCCAxis,
                                                *sample.second.second.second, *sample.second.second.first,    
                                                kNumuCutND2018, kNoShift, *syst.second);

        // Shift the spectra
        // predsND_shifted[sample.first][shiftLabel.first][syst.first]
        //   = (NDPredictionSterile*)gennd_tau.Generate(*loaders).release();
        // predsFD_shifted[sample.first][shiftLabel.first][syst.first]
        //   = (FDPredictionSterile*)genfd_tau.Generate(*loaders).release();
        if (extrap)
          predsExtrap_shifted[sample.first][shiftLabel.first][syst.first]
            = (PredictionSterile*)genExtrap_tau->Generate(*loaders).release();

        if (extrap)
          delete genExtrap_tau;

      }
    }

  }

  loaders->Go();

  std::string folder = "./";
  std::string filenm = "SystsTau18";

  std::string fullLocation = folder + filenm + ".root";
  TFile* rootF = new TFile(fullLocation.c_str(), "RECREATE");
  // SaveMaps(rootF, predsND_nominal, predsND_shifted);
  // SaveMaps(rootF, predsFD_nominal, predsFD_shifted);
  if (extrap)
    SaveMaps(rootF, predsExtrap_nominal, predsExtrap_shifted);
  rootF->Close();

  // delete loaders;

  return;

}

// FDExtrap* extrapfds = new FDExtrap
//               (FDExtrap::FDExtrap_c(
//                                     loaders.GetLoader(caf::kFARDET, Loaders::kMC, kBeam, Loaders::kNonSwap),
//                                     loaders.GetLoader(caf::kFARDET, Loaders::kMC, kBeam, Loaders::kFluxSwap),
//                                     loaders.GetLoader(caf::kFARDET, Loaders::kMC, kBeam, Loaders::kTauSwap),
//                                     *sample.second.first , kNus18FD, kNoShift,  kWgtP3));
// predsFD_nominal[sample.first] = new FDPredictionSterile( extrapfds );

// for(const auto& shiftlabel : shiftlabels) {
//   for(const auto& syst : systematics[shiftlabel.first]) {
    
//     FDExtrap* extrapfdst = new FDExtrap
//       (FDExtrap::FDExtrap_c
//        (
//         loaders.GetLoader(caf::kFARDET, Loaders::kMC, kBeam, Loaders::kNonSwap), 
//      loaders.GetLoader(caf::kFARDET, Loaders::kMC, kBeam, Loaders::kFluxSwap),
//      loaders.GetLoader(caf::kFARDET, Loaders::kMC, kBeam, Loaders::kTauSwap),
//      *sample.second.first , kNus18FD, kNoShift,  *syst.second));
//       predsFD_shifted[sample.first][shiftlabel.first][syst.first] = new FDPredictionSterile( extrapfdst );
//   }
//  }
// }