Nus18SystsCalibRelLoad.C

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

#include "CAFAna/Analysis/Prod4Loaders.h"
#include "CAFAna/Core/SpectrumLoader.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/Extrap/ExtrapSterile.h"
#include "CAFAna/Extrap/FDExtrap.h"
#include "CAFAna/Extrap/NDExtrap.h"
#include "CAFAna/Prediction/PredictionGenerator.h"
#include "NuXAna/Prediction/PredictionGeneratorNuX.h"
#include "NuXAna/Prediction/NDPredictionSterile.h"
#include "NuXAna/Prediction/FDPredictionSterile.h"
#include "CAFAna/Systs/Systs.h"
#include "CAFAna/Vars/GenieWeights.h"
#include "NuXAna/Vars/HistAxes.h"
#include "CAFAna/Vars/PPFXWeights.h"

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

using namespace ana;

void Nus18SystsCalibRelLoad(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_nom   = new Prod4NomLoaders(cafType, fluxType);
  Loaders* loaders_up    = new Prod4AbsCalibLoaders(cafType, fluxType, +1);
  Loaders* loaders_down  = new Prod4AbsCalibLoaders(cafType, fluxType, -1);
  loaders_nom  ->SetSpillCut(kStandardSpillCuts);
  loaders_up   ->SetSpillCut(kStandardSpillCuts);
  loaders_down ->SetSpillCut(kStandardSpillCuts);

  // Get all Relative Calibration systematics
  std::map<std::string, std::pair<Loaders*, Loaders*> > systematics;
  systematics["CalFlatDownND"] = std::make_pair(loaders_down, loaders_nom);
  systematics["CalFlatUpND"]   = std::make_pair(loaders_up, loaders_nom);
  systematics["CalFlatDownFD"] = std::make_pair(loaders_nom, loaders_down);
  systematics["CalFlatUpFD"]   = std::make_pair(loaders_nom, loaders_up);

  // 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
  for(const auto& sample : cut_samples) {

    // Get prediction generators
    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_nom).release();
    predsFD_nominal[sample.first] = (FDPredictionSterile*)genfd.Generate(*loaders_nom).release();
    if (extrap)
      predsExtrap_nominal[sample.first] = (PredictionSterile*)genExtrap->Generate(*loaders_nom).release();

    // Set up the shifted decompositions
    // One is needed for every sample, systematic, and sigma level
    for (const auto& syst : systematics) {
      predsND_shifted[sample.first][syst.first][1]
        = (NDPredictionSterile*)gennd.Generate(*syst.second.first).release();
      predsFD_shifted[sample.first][syst.first][1]
        = (FDPredictionSterile*)genfd.Generate(*syst.second.second).release();
      if (extrap)
        predsExtrap_shifted[sample.first][syst.first][1]
          = (PredictionSterile*)genExtrap->Generate(*syst.second.second).release();
    }

    if (extrap)
      delete genExtrap;

  }

  loaders_nom ->Go();
  loaders_up  ->Go();
  loaders_down->Go();

  std::string folder = "./";
  std::string filenm = "SystsCalibRel18";

  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_nom;
  // delete loaders_up;
  // delete loaders_down;

  return;

}