Public Member Functions
double	operator() (const SiStripCluster &cluster, const uint32_t &id) const
double	signalOverNoise (const SiStripCluster &cluster, const uint32_t &id) const
	StripSignalOverNoiseCalculator (const std::string &theQualityLabel=std::string(""))
void	update (const edm::EventSetup &eventSetup)
Private Attributes
const SiStripGain *	gain_
uint32_t	gainCacheId_
const SiStripNoises *	noise_
uint32_t	noiseCacheId_
const SiStripQuality *	quality_
uint32_t	qualityCacheId_
const std::string	qualityLabel_

Detailed Description

Definition at line 55 of file JPTJetAnalyzer.cc.

Constructor & Destructor Documentation

jptJetAnalysis::StripSignalOverNoiseCalculator::StripSignalOverNoiseCalculator ( const std::string & theQualityLabel = std::string("") )

Definition at line 751 of file JPTJetAnalyzer.cc.

    : qualityLabel_(theQualityLabel),
      quality_(NULL),
      noise_(NULL),
      gain_(NULL),
      qualityCacheId_(0),
      noiseCacheId_(0),
      gainCacheId_(0)
    {}

Member Function Documentation

double jptJetAnalysis::StripSignalOverNoiseCalculator::operator()	(	const SiStripCluster &	cluster,
		const uint32_t &	id
	)		const `[inline]`

Definition at line 62 of file JPTJetAnalyzer.cc.

References signalOverNoise().

    { return signalOverNoise(cluster,id); }

double jptJetAnalysis::StripSignalOverNoiseCalculator::signalOverNoise	(	const SiStripCluster &	cluster,
		const uint32_t &	id
	)		const

Definition at line 792 of file JPTJetAnalyzer.cc.

References ecalMGPA::adc(), SiStripCluster::amplitudes(), SiStripCluster::firstStrip(), gain_, SiStripNoises::getNoise(), SiStripBadStrip::getRange(), SiStripNoises::getRange(), SiStripGain::getRange(), SiStripGain::getStripGain(), SiStripQuality::IsStripBad(), noise_, quality_, mathSSE::sqrt(), and strip().

Referenced by operator()().

  {
    //const uint32_t detId = cluster.geographicalId();
    
    const uint16_t firstStrip = cluster.firstStrip();
    const SiStripQuality::Range& qualityRange = quality_->getRange(detId);
    const SiStripNoises::Range& noiseRange = noise_->getRange(detId);
    const SiStripApvGain::Range& gainRange = gain_->getRange(detId);
    double signal = 0;
    double noise2 = 0;
    unsigned int nNonZeroStrips = 0;
    const std::vector<uint8_t>& clusterAmplitudes = cluster.amplitudes();
    const std::vector<uint8_t>::const_iterator clusterAmplitudesEnd = clusterAmplitudes.end();
    const std::vector<uint8_t>::const_iterator clusterAmplitudesBegin = clusterAmplitudes.begin();
    for (std::vector<uint8_t>::const_iterator iAmp = clusterAmplitudesBegin; iAmp != clusterAmplitudesEnd; ++iAmp) {
      const uint8_t adc = *iAmp;
      const uint16_t strip = iAmp-clusterAmplitudesBegin+firstStrip;
      const bool stripBad = quality_->IsStripBad(qualityRange,strip);
      const double noise = noise_->getNoise(strip,noiseRange);
      const double gain = gain_->getStripGain(strip,gainRange);
      signal += adc;
      if (adc) ++nNonZeroStrips;
      const double noiseContrib = (stripBad ? 0 : noise/gain);
      noise2 += noiseContrib*noiseContrib;
    }
    const double noise = sqrt(noise2/nNonZeroStrips);
    if (noise) return signal/noise;
    else return 0;
  }

void jptJetAnalysis::StripSignalOverNoiseCalculator::update ( const edm::EventSetup & eventSetup )

Definition at line 761 of file JPTJetAnalyzer.cc.

References edm::eventsetup::EventSetupRecord::cacheIdentifier(), gain_, gainCacheId_, edm::EventSetup::get(), edm::eventsetup::EventSetupRecord::get(), noise_, noiseCacheId_, edm::ESHandle< T >::product(), quality_, qualityCacheId_, and qualityLabel_.

  {
    //update the quality if necessary
    const SiStripQualityRcd& qualityRecord = eventSetup.get<SiStripQualityRcd>();
    const uint32_t newQualityCacheId = qualityRecord.cacheIdentifier();
    if ((newQualityCacheId != qualityCacheId_) || !quality_) {
      edm::ESHandle<SiStripQuality> qualityHandle;
      qualityRecord.get(qualityLabel_,qualityHandle);
      quality_ = qualityHandle.product();
      qualityCacheId_ = newQualityCacheId;
    }
    //update the noise if necessary
    const SiStripNoisesRcd& noiseRecord = eventSetup.get<SiStripNoisesRcd>();
    const uint32_t newNoiseCacheId = noiseRecord.cacheIdentifier();
    if ((newNoiseCacheId != noiseCacheId_) || !noise_) {
      edm::ESHandle<SiStripNoises> noiseHandle;
      noiseRecord.get(noiseHandle);
      noise_ = noiseHandle.product();
      noiseCacheId_ = newNoiseCacheId;
    }
    //update the gain if necessary
    const SiStripGainRcd& gainRecord = eventSetup.get<SiStripGainRcd>();
    const uint32_t newGainCacheId = gainRecord.cacheIdentifier();
    if ((newGainCacheId != gainCacheId_) || !gain_) {
      edm::ESHandle<SiStripGain> gainHandle;
      gainRecord.get(gainHandle);
      gain_ = gainHandle.product();
      gainCacheId_ = newGainCacheId;
    }
  }