RawPCCProducer.cc

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#include <string>
#include <iostream> 
#include <fstream> 
#include <vector>
#include "DataFormats/Luminosity/interface/PixelClusterCounts.h"
#include "DataFormats/Luminosity/interface/LumiInfo.h"
#include "DataFormats/Luminosity/interface/LumiConstants.h"
#include "CondFormats/Luminosity/interface/LumiCorrections.h"
#include "CondFormats/DataRecord/interface/LumiCorrectionsRcd.h"
#include "FWCore/MessageLogger/interface/MessageLogger.h"
#include "FWCore/Framework/interface/MakerMacros.h"
#include "FWCore/Framework/interface/ConsumesCollector.h"
#include "FWCore/Framework/interface/ESHandle.h"
#include "FWCore/Framework/interface/EventSetup.h"
#include "FWCore/Framework/interface/Frameworkfwd.h"
#include "FWCore/Framework/interface/one/EDProducer.h"
#include "FWCore/Framework/interface/Event.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "FWCore/Utilities/interface/EDGetToken.h"
#include "FWCore/ServiceRegistry/interface/Service.h"
#include "FWCore/Framework/interface/LuminosityBlock.h"
#include "TMath.h"

class RawPCCProducer : public edm::one::EDProducer<edm::EndLuminosityBlockProducer,
    edm::one::WatchLuminosityBlocks> {
        public:
            explicit RawPCCProducer(const edm::ParameterSet&);
            ~RawPCCProducer() override;

        private:
            void beginLuminosityBlock     (edm::LuminosityBlock const& lumiSeg, const edm::EventSetup& iSetup) final;
            void endLuminosityBlock       (edm::LuminosityBlock const& lumiSeg, const edm::EventSetup& iSetup) final;
            void endLuminosityBlockProduce(edm::LuminosityBlock& lumiSeg, const edm::EventSetup& iSetup) final;
            void produce                  (edm::Event& iEvent, const edm::EventSetup& iSetup) final;


            edm::EDGetTokenT<reco::PixelClusterCounts>  pccToken;
            std::string   pccSource_;                   //input file EDproducer module label 
            std::string   prodInst_;                    //input file product instance 
            std::string   takeAverageValue_;            //Output average values 

            std::vector<int>   modVeto_;                //The list of modules to skip in the lumi calc. 
            std::string outputProductName_;             //specifies the trigger Rand or ZeroBias 
            std::vector<int> clustersPerBXInput_;       //Will fill this with content from PCC
            std::vector<int> modID_;                    //vector with Module IDs 1-1 map to bunch x-ing in clusers
            std::vector<int> events_;                   //vector with total events at each bxid.
            std::vector<int> clustersPerBXOutput_;      //new vector containing clusters per bxid 
            std::vector<float> corrClustersPerBXOutput_;//new vector containing clusters per bxid with afterglow corrections 
            std::vector<float> errorPerBX_;             //Stat error (or number of events)
            std::vector<int> goodMods_;                 //The indicies of all the good modules - not vetoed
            float totalLumi_;                           //The total raw luminosity from the pixel clusters - not scaled
            float statErrOnLumi_;                       //the statistical error on the lumi - large num ie sqrt(N)

            std::string csvOutLabel_;
            bool saveCSVFile_;

            bool applyCorr_;
            std::vector<float> correctionScaleFactors_;

            std::unique_ptr<LumiInfo> outputLumiInfo;

            std::ofstream csvfile;
    };

//--------------------------------------------------------------------------------------------------
RawPCCProducer::RawPCCProducer(const edm::ParameterSet& iConfig)
{
    pccSource_ = iConfig.getParameter<edm::ParameterSet>("RawPCCProducerParameters").getParameter<std::string>("inputPccLabel");
    prodInst_ = iConfig.getParameter<edm::ParameterSet>("RawPCCProducerParameters").getParameter<std::string>("ProdInst");
    takeAverageValue_ = iConfig.getParameter<edm::ParameterSet>("RawPCCProducerParameters").getUntrackedParameter<std::string>("OutputValue",std::string("Totals")); 
    outputProductName_ = iConfig.getParameter<edm::ParameterSet>("RawPCCProducerParameters").getUntrackedParameter<std::string>("outputProductName","alcaLumi");
    modVeto_ = iConfig.getParameter<edm::ParameterSet>("RawPCCProducerParameters").getParameter<std::vector<int>>("modVeto");
    applyCorr_ = iConfig.getParameter<edm::ParameterSet>("RawPCCProducerParameters").getUntrackedParameter<bool>("ApplyCorrections",false);
    saveCSVFile_ = iConfig.getParameter<edm::ParameterSet>("RawPCCProducerParameters").getUntrackedParameter<bool>("saveCSVFile",false);
    csvOutLabel_ = iConfig.getParameter<edm::ParameterSet>("RawPCCProducerParameters").getUntrackedParameter<std::string>("label",std::string("rawPCC.csv"));

    edm::InputTag PCCInputTag_(pccSource_, prodInst_);
    clustersPerBXOutput_.resize(LumiConstants::numBX,0);//vector containing clusters per bxid 
    corrClustersPerBXOutput_.resize(LumiConstants::numBX,0);//vector containing clusters per bxid 
    pccToken=consumes<reco::PixelClusterCounts, edm::InLumi>(PCCInputTag_);
    produces<LumiInfo, edm::Transition::EndLuminosityBlock>(outputProductName_);

    if(!applyCorr_){
        correctionScaleFactors_.resize(LumiConstants::numBX,1.0);
    }
}

//--------------------------------------------------------------------------------------------------
RawPCCProducer::~RawPCCProducer(){
}

//--------------------------------------------------------------------------------------------------
void RawPCCProducer::produce(edm::Event& iEvent, const edm::EventSetup& iSetup){


}

//--------------------------------------------------------------------------------------------------
void RawPCCProducer::beginLuminosityBlock(edm::LuminosityBlock const& lumiSeg, const edm::EventSetup& iSetup){

    outputLumiInfo = std::make_unique<LumiInfo>(); 

    if(saveCSVFile_){
        csvfile.open(csvOutLabel_, std::ios_base::app);
        csvfile<<std::to_string(lumiSeg.run())<<",";
        csvfile<<std::to_string(lumiSeg.luminosityBlock())<<",";
    }
}

//--------------------------------------------------------------------------------------------------
void RawPCCProducer::endLuminosityBlock(edm::LuminosityBlock const& lumiSeg, const edm::EventSetup& iSetup){
    totalLumi_=0.0;
    statErrOnLumi_=0.0;

    std::fill(clustersPerBXOutput_.begin(),  clustersPerBXOutput_.end(),0);
    std::fill(corrClustersPerBXOutput_.begin(),     corrClustersPerBXOutput_.end(),   0);

    goodMods_.clear();

    edm::Handle<reco::PixelClusterCounts> pccHandle; 
    lumiSeg.getByToken(pccToken,pccHandle);

    const reco::PixelClusterCounts& inputPcc = *(pccHandle.product()); 

    modID_ = inputPcc.readModID();
    events_= inputPcc.readEvents();
    clustersPerBXInput_ = inputPcc.readCounts();

    //making list of modules to sum over
    for (unsigned int i=0;i<modID_.size();i++){
        if (std::find(modVeto_.begin(),modVeto_.end(), modID_.at(i)) == modVeto_.end()){
            goodMods_.push_back(i);
        }
    }

    //summing over good modules only 
    for (int bx=0;bx<int(LumiConstants::numBX);bx++){
        for (unsigned int i=0;i<goodMods_.size();i++){
            clustersPerBXOutput_.at(bx)+=clustersPerBXInput_.at(goodMods_.at(i)*int(LumiConstants::numBX)+bx);

        }
    }

    if(applyCorr_){
        edm::ESHandle< LumiCorrections > corrHandle;
        iSetup.get<LumiCorrectionsRcd>().get(corrHandle);
        const LumiCorrections *pccCorrections = corrHandle.product();
        correctionScaleFactors_ = pccCorrections->getCorrectionsBX();
    }

    for (unsigned int i=0;i<clustersPerBXOutput_.size();i++){
        if (events_.at(i)!=0){
            corrClustersPerBXOutput_[i]=clustersPerBXOutput_[i]*correctionScaleFactors_[i];
        }else{
            corrClustersPerBXOutput_[i]=0.0;
        }
        totalLumi_+=corrClustersPerBXOutput_[i];
        statErrOnLumi_+=float(events_[i]);
    }

    errorPerBX_.clear();
    errorPerBX_.assign(events_.begin(),events_.end()); 

    if(takeAverageValue_=="Average"){
        unsigned int NActiveBX=0;
        for (int bx=0;bx<int(LumiConstants::numBX);bx++){
            if(events_[bx]>0){
                NActiveBX++;  
                // Counting where events are will only work 
                // for ZeroBias or AlwaysTrue triggers.
                // Random triggers will get all BXs.
                corrClustersPerBXOutput_[bx]/=float(events_[bx]);
                errorPerBX_[bx]=1/TMath::Sqrt(float(events_[bx]));
            }
        }
        if (statErrOnLumi_!=0) {
            totalLumi_=totalLumi_/statErrOnLumi_*float(NActiveBX);
            statErrOnLumi_=1/TMath::Sqrt(statErrOnLumi_)*totalLumi_;
        }
    }


    outputLumiInfo->setTotalInstLumi(totalLumi_);
    outputLumiInfo->setTotalInstStatError(statErrOnLumi_);

    outputLumiInfo->setErrorLumiAllBX(errorPerBX_);
    outputLumiInfo->setInstLumiAllBX(corrClustersPerBXOutput_);

    if(saveCSVFile_){
        csvfile<<std::to_string(totalLumi_);
        
        if(totalLumi_>0){
            for(unsigned int bx=0;bx<LumiConstants::numBX;bx++){
                csvfile<<","<<std::to_string(corrClustersPerBXOutput_[bx]);
            }
            csvfile<<std::endl;   
        } else if (totalLumi_<0) {
            edm::LogInfo("WARNING")<<"WHY IS LUMI NEGATIVE?!?!?!? "<<totalLumi_;
        }

        csvfile.close();
    }
}

//--------------------------------------------------------------------------------------------------
void RawPCCProducer::endLuminosityBlockProduce(edm::LuminosityBlock& lumiSeg, const edm::EventSetup& iSetup){
    lumiSeg.put(std::move(outputLumiInfo), std::string(outputProductName_)); 

}

DEFINE_FWK_MODULE(RawPCCProducer);