ZSEnergy_impl Namespace Reference

Functions
template<class DIGI >
bool	keepMe (const HcalDbService &db, const DIGI &inp, int threshold, int firstSample, int samples, bool twosided)

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Function Documentation

template<class DIGI >

bool ZSEnergy_impl::keepMe	(	const HcalDbService &	db,
		const DIGI &	inp,
		int	threshold,
		int	firstSample,
		int	samples,
		bool	twosided
	)

Definition at line 19 of file HcalZSAlgoEnergy.cc.

References HcalQIECoder::charge(), ExpressReco_HICollisions_FallBack::firstSample, HcalDbService::getHcalCoder(), HcalDbService::getHcalShape(), HcalDbService::getPedestal(), HcalPedestal::getValue(), j, evf::evtn::offset(), and slope.

                                                                                                                    {
    bool keepIt=false;
    const HcalQIEShape* shape = db.getHcalShape (); // this one is generic
    const HcalQIECoder* channelCoder = db.getHcalCoder (inp.id());

    // determine average pedestal for channel
    float pedsum=0, pedave=0, offset=0, slope=0;
    const HcalPedestal* ped=db.getPedestal(inp.id());
    for (int j=0; j<4; j++) {
      pedave+=ped->getValue(j)/4.0;
      offset+=channelCoder->charge(*shape,0,j)/4.0;
      slope+=channelCoder->charge(*shape,1,j)/4.0;
    }
    slope-=offset;
    pedave-=offset;
    pedave/=slope;
      
    int sum=0;

    for (int j=0; j<samples && j+firstSample < inp.size(); j++) {
      sum+=inp[j+firstSample].adc();
      pedsum+=pedave;
    }
    //    int presum=sum;
    sum-=(int)(pedsum);

    if (sum>=threshold) keepIt=true;
    else if (sum<=(-threshold) && twosided) keepIt=true;
    /*
      else
     std::cout << inp.id() << " " << sum << ":" << presum << " " << threshold 
      << " " << pedsum << " " << pedave
      << " " << offset << " " << slope 
      << std::endl;
    */
    return keepIt;
  }