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NoiseCaloCellsFromFileTool.cpp
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NoiseCaloCellsFromFileTool.cpp
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#include "NoiseCaloCellsFromFileTool.h"
// k4geo
#include "detectorCommon/DetUtils_k4geo.h"
// k4FWCore
#include "k4Interface/IGeoSvc.h"
// DD4hep
#include "DD4hep/Detector.h"
// ROOT
#include "TSystem.h"
#include "TFile.h"
#include "TH1F.h"
#include "TMath.h"
DECLARE_COMPONENT(NoiseCaloCellsFromFileTool)
NoiseCaloCellsFromFileTool::NoiseCaloCellsFromFileTool(const std::string& type, const std::string& name,
const IInterface* parent)
: AlgTool(type, name, parent), m_geoSvc("GeoSvc", name) {
declareInterface<INoiseCaloCellsTool>(this);
declareProperty("cellPositionsTool", m_cellPositionsTool, "Handle for tool to retrieve cell positions");
}
StatusCode NoiseCaloCellsFromFileTool::initialize() {
if (!m_geoSvc) {
error() << "Unable to locate Geometry Service. "
<< "Make sure you have GeoSvc and SimSvc in the right order in the configuration." << endmsg;
return StatusCode::FAILURE;
}
// Initialize random service
if (service("RndmGenSvc", m_randSvc).isFailure()) {
error() << "Couldn't get RndmGenSvc!!!!" << endmsg;
return StatusCode::FAILURE;
}
if (m_gauss.initialize(m_randSvc, Rndm::Gauss(0., 1.)).isFailure()) {
error() << "Couldn't initialize RndmGenSvc!!!!" << endmsg;
return StatusCode::FAILURE;
}
// open and check file, read the histograms with noise constants
if (initNoiseFromFile().isFailure()) {
error() << "Couldn't open file with noise constants!!!" << endmsg;
return StatusCode::FAILURE;
}
// Check if cell position tool available
if (!m_cellPositionsTool.retrieve() and !m_useSeg) {
info() << "Unable to retrieve cell positions tool, try eta-phi segmentation." << endmsg;
// Get PhiEta segmentation
m_segmentationPhiEta = dynamic_cast<dd4hep::DDSegmentation::FCCSWGridPhiEta_k4geo*>(
m_geoSvc->getDetector()->readout(m_readoutName).segmentation().segmentation());
if (m_segmentationPhiEta == nullptr) {
error() << "There is no phi-eta segmentation." << endmsg;
return StatusCode::FAILURE;
}
else
info() << "Found phi-eta segmentation." << endmsg;
}
// Get PhiEta segmentation
m_segmentationPhiEta = dynamic_cast<dd4hep::DDSegmentation::FCCSWGridPhiEta_k4geo*>(
m_geoSvc->getDetector()->readout(m_readoutName).segmentation().segmentation());
if (m_segmentationPhiEta == nullptr) {
m_segmentationMulti = dynamic_cast<dd4hep::DDSegmentation::MultiSegmentation*>(
m_geoSvc->getDetector()->readout(m_readoutName).segmentation().segmentation());
if (m_segmentationMulti == nullptr) {
error() << "There is no phi-eta or multi- segmentation for the readout " << m_readoutName << " defined." << endmsg;
return StatusCode::FAILURE;
} else {
// check if multisegmentation contains only phi-eta sub-segmentations
const dd4hep::DDSegmentation::FCCSWGridPhiEta_k4geo* subsegmentation = nullptr;
for (const auto& subSegm: m_segmentationMulti->subSegmentations()) {
subsegmentation = dynamic_cast<dd4hep::DDSegmentation::FCCSWGridPhiEta_k4geo*>(subSegm.segmentation);
if (subsegmentation == nullptr) {
error() << "At least one of the sub-segmentations in MultiSegmentation named " << m_readoutName << " is not a phi-eta grid." << endmsg;
return StatusCode::FAILURE;
}
}
}
}
m_decoder = m_geoSvc->getDetector()->readout(m_readoutName).idSpec().decoder();
m_index_activeField = m_decoder->index(m_activeFieldName);
debug() << "Filter noise threshold: " << m_filterThreshold << "*sigma" << endmsg;
StatusCode sc = AlgTool::initialize();
if (sc.isFailure()) return sc;
return sc;
}
void NoiseCaloCellsFromFileTool::addRandomCellNoise(std::unordered_map<uint64_t, double>& aCells) {
std::for_each(aCells.begin(), aCells.end(), [this](std::pair<const uint64_t, double>& p) {
p.second += (getNoiseRMSPerCell(p.first) * m_gauss.shoot());
});
}
void NoiseCaloCellsFromFileTool::filterCellNoise(std::unordered_map<uint64_t, double>& aCells) {
// Erase a cell if it has energy bellow a threshold from the vector
auto it = aCells.begin();
while ((it = std::find_if(it, aCells.end(), [this](std::pair<const uint64_t, double>& p) {
return m_useAbsInFilter ? bool(std::abs(p.second) < m_filterThreshold * getNoiseRMSPerCell(p.first)) : bool(p.second < m_filterThreshold * getNoiseRMSPerCell(p.first));
})) != aCells.end()) {
aCells.erase(it++);
}
}
StatusCode NoiseCaloCellsFromFileTool::finalize() {
StatusCode sc = AlgTool::finalize();
return sc;
}
StatusCode NoiseCaloCellsFromFileTool::initNoiseFromFile() {
// Check if file exists
if (m_noiseFileName.empty()) {
error() << "Name of the file with the noise values not provided!" << endmsg;
return StatusCode::FAILURE;
}
if (gSystem->AccessPathName(m_noiseFileName.value().c_str())) {
error() << "Provided file with the noise values not found!" << endmsg;
error() << "File path: " << m_noiseFileName.value() << endmsg;
return StatusCode::FAILURE;
}
std::unique_ptr<TFile> noiseFile(TFile::Open(m_noiseFileName.value().c_str(), "READ"));
if (noiseFile->IsZombie()) {
error() << "Unable to open the file with the noise values!" << endmsg;
error() << "File path: " << m_noiseFileName.value() << endmsg;
return StatusCode::FAILURE;
} else {
info() << "Using the following file with noise values: "
<< m_noiseFileName.value() << endmsg;
}
std::string elecNoiseLayerHistoName, pileupLayerHistoName;
// Read the histograms with electronics noise and pileup from the file
for (unsigned i = 0; i < m_numRadialLayers; i++) {
elecNoiseLayerHistoName = m_elecNoiseHistoName + std::to_string(i + 1);
debug() << "Getting histogram with a name " << elecNoiseLayerHistoName << endmsg;
m_histoElecNoiseRMS.push_back(*dynamic_cast<TH1F*>(noiseFile->Get(elecNoiseLayerHistoName.c_str())));
if (m_histoElecNoiseRMS.at(i).GetNbinsX() < 1) {
error() << "Histogram " << elecNoiseLayerHistoName
<< " has 0 bins! check the file with noise and the name of the histogram!" << endmsg;
return StatusCode::FAILURE;
}
if (m_addPileup) {
pileupLayerHistoName = m_pileupHistoName + std::to_string(i + 1);
debug() << "Getting histogram with a name " << pileupLayerHistoName << endmsg;
m_histoPileupNoiseRMS.push_back(*dynamic_cast<TH1F*>(noiseFile->Get(pileupLayerHistoName.c_str())));
if (m_histoPileupNoiseRMS.at(i).GetNbinsX() < 1) {
error() << "Histogram " << pileupLayerHistoName
<< " has 0 bins! check the file with noise and the name of the histogram!" << endmsg;
return StatusCode::FAILURE;
}
}
}
noiseFile->Close();
// Check if we have same number of histograms (all layers) for pileup and electronics noise
if (m_histoElecNoiseRMS.size() == 0) {
error() << "No histograms with noise found!!!!" << endmsg;
return StatusCode::FAILURE;
}
if (m_addPileup) {
if (m_histoElecNoiseRMS.size() != m_histoPileupNoiseRMS.size()) {
error() << "Missing histograms! Different number of histograms for electronics noise and pileup!!!!" << endmsg;
return StatusCode::FAILURE;
}
}
return StatusCode::SUCCESS;
}
double NoiseCaloCellsFromFileTool::getNoiseRMSPerCell(uint64_t aCellId) {
const dd4hep::DDSegmentation::FCCSWGridPhiEta_k4geo* segmentation = m_segmentationPhiEta;
if (segmentation == nullptr) {
segmentation = dynamic_cast<const dd4hep::DDSegmentation::FCCSWGridPhiEta_k4geo*>(&m_segmentationMulti->subsegmentation(aCellId));
}
double elecNoiseRMS = 0.;
double pileupNoiseRMS = 0.;
double cellEta;
if (m_useSeg)
cellEta = m_segmentationPhiEta->eta(aCellId);
else
cellEta = m_cellPositionsTool->xyzPosition(aCellId).Eta();
unsigned cellLayer = m_decoder->get(aCellId, m_index_activeField);
// All histograms have same binning, all bins with same size
// Using the histogram in the first layer to get the bin size
unsigned index = 0;
if (m_histoElecNoiseRMS.size() != 0) {
int ibin = m_histoElecNoiseRMS.at(index).FindFixBin(fabs(cellEta));
// Check that there are not more layers than the constants are provided for
if (cellLayer < m_histoElecNoiseRMS.size()) {
elecNoiseRMS = m_histoElecNoiseRMS.at(cellLayer).GetBinContent(ibin);
if (m_addPileup) {
pileupNoiseRMS = m_histoPileupNoiseRMS.at(cellLayer).GetBinContent(ibin);
}
} else {
error()
<< "More radial layers than we have noise for!!!! Using the last layer for all histograms outside the range."
<< endmsg;
}
} else {
error() << "No histograms with noise constants!!!!! " << endmsg;
}
// Total noise: electronics noise + pileup
double totalNoiseRMS = 0;
if (m_addPileup) {
totalNoiseRMS = sqrt(elecNoiseRMS*elecNoiseRMS + pileupNoiseRMS*pileupNoiseRMS) * m_scaleFactor;
}
else { // avoid useless math operations if no pileup
totalNoiseRMS = elecNoiseRMS * m_scaleFactor;
}
if (totalNoiseRMS < 1e-6) {
warning() << "Zero noise RMS: cell eta " << cellEta << " layer " << cellLayer << " noise " << totalNoiseRMS << endmsg;
}
return totalNoiseRMS;
}