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SimplePedestalCalculator Class Reference

Concrete implementation of TkPedestalCalculator for Simple. More...

#include <CalibTracker/SiStripAPVAnalysis/interface/SimplePedestalCalculator.h>

Inheritance diagram for SimplePedestalCalculator:

List of all members.

Public Member Functions
void	newEvent ()
	Return raw noise, determined without CMN subtraction.
ApvAnalysis::PedestalType	pedestal () const
	Return reconstructed pedestals.
ApvAnalysis::PedestalType	rawNoise () const
void	resetPedestals ()
void	setPedestals (ApvAnalysis::PedestalType &in)
void	setRawNoise (ApvAnalysis::PedestalType &in)
	SimplePedestalCalculator (int evnt_ini)
void	updatePedestal (ApvAnalysis::RawSignalType &in)
	Update pedestals with current event.
void	updateStatus ()
	Request that status flag be updated.
virtual	~SimplePedestalCalculator ()
Protected Attributes
bool	alreadyUsedEvent
int	eventsRequiredToCalibrate
int	numberOfEvents
std::vector< unsigned short >	theEventPerStrip
ApvAnalysis::PedestalType	thePedestal
std::vector< int >	thePedSqSum
std::vector< int >	thePedSum
ApvAnalysis::PedestalType	theRawNoise
Private Member Functions
void	init ()
void	initializePedestal (ApvAnalysis::RawSignalType &in)
void	refinePedestal (ApvAnalysis::RawSignalType &in)

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Detailed Description

Concrete implementation of TkPedestalCalculator for Simple.

Definition at line 10 of file SimplePedestalCalculator.h.

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Constructor & Destructor Documentation

SimplePedestalCalculator::SimplePedestalCalculator

(

int

evnt_ini

)

Definition at line 9 of file SimplePedestalCalculator.cc.

References GenMuonPlsPt100GeV_cfg::cout, lat::endl(), eventsRequiredToCalibrate, and init().

                                                               :   
                        numberOfEvents(0),
                        alreadyUsedEvent(false)
{
  if (0) cout << "Constructing SimplePedestalCalculator " << endl;
  eventsRequiredToCalibrate = evnt_ini; 
  //  eventsRequiredToUpdate    = evnt_iter;
  //  cutToAvoidSignal          = sig_cut;
  init();
}

SimplePedestalCalculator::~SimplePedestalCalculator

(

)

[virtual]

Definition at line 34 of file SimplePedestalCalculator.cc.

References GenMuonPlsPt100GeV_cfg::cout, and lat::endl().

                                                    {
  if (0) cout << "Destructing SimplePedestalCalculator " << endl;
}

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Member Function Documentation

void SimplePedestalCalculator::init

(

)

[private]

Definition at line 22 of file SimplePedestalCalculator.cc.

References TkStateMachine::setCalibrating(), theEventPerStrip, thePedestal, thePedSqSum, thePedSum, theRawNoise, and TkPedestalCalculator::theStatus.

Referenced by SimplePedestalCalculator().

                                    { 
  theRawNoise.clear();
  thePedestal.clear();
  thePedSum.clear();
  thePedSqSum.clear();
  theEventPerStrip.clear();
  theStatus.setCalibrating();

}

void SimplePedestalCalculator::initializePedestal

(

ApvAnalysis::RawSignalType &

in

)

[private]

Definition at line 72 of file SimplePedestalCalculator.cc.

References edm::DetSet< T >::data, eventsRequiredToCalibrate, i, numberOfEvents, funct::sqrt(), theEventPerStrip, thePedestal, thePedSqSum, thePedSum, and theRawNoise.

Referenced by updatePedestal().

                                                                              {
  if (numberOfEvents == 1) {

    thePedSum.clear();
    thePedSqSum.clear();
    theEventPerStrip.clear();
    
    thePedSum.reserve(128);
    thePedSqSum.reserve(128);
    theEventPerStrip.reserve(128);
    
    thePedSum.resize(in.data.size(), 0);
    thePedSqSum.resize(in.data.size(), 0);
    theEventPerStrip.resize(in.data.size(),0);
  }

  //eventsRequiredToCalibrate is considered the minimum number of events to be used

  if (numberOfEvents <= eventsRequiredToCalibrate) {
    edm::DetSet<SiStripRawDigi>::const_iterator i = in.data.begin();
    int ii=0;
    for (;i!=in.data.end() ; i++) {
      thePedSum[ii]   += (*i).adc();
      thePedSqSum[ii] += ((*i).adc())*((*i).adc());
      theEventPerStrip[ii]++;
      ii++;
    }
  }
  if (numberOfEvents == eventsRequiredToCalibrate) {
    thePedestal.clear();
    theRawNoise.clear();
    edm::DetSet<SiStripRawDigi>::const_iterator i = in.data.begin();
    int ii=0;
    for (;i!=in.data.end() ; i++) {


      // the pedestal is calculated as int, as required by FED.
      int avVal   = (theEventPerStrip[ii]) 
        ? thePedSum[ii]/theEventPerStrip[ii]:0;

      double sqAvVal = (theEventPerStrip[ii]) 
        ? thePedSqSum[ii]/theEventPerStrip[ii]:0.0;
      double corr_fac = (theEventPerStrip[ii] > 1) 
        ? (theEventPerStrip[ii]/(theEventPerStrip[ii]-1)) : 1.0;
      double rmsVal  =  (sqAvVal - avVal*avVal > 0.0) 
           ? sqrt(corr_fac * (sqAvVal - avVal*avVal)) : 0.0;    
      thePedestal.push_back(static_cast<float>(avVal));
      theRawNoise.push_back(static_cast<float>(rmsVal));
      ii++;
    }

  }
}

void SimplePedestalCalculator::newEvent

(

)

[virtual]

Return raw noise, determined without CMN subtraction.

Tell pedestal calculator that a new event is available

Reimplemented from TkPedestalCalculator.

Definition at line 178 of file SimplePedestalCalculator.cc.

References alreadyUsedEvent.

                                       {
  alreadyUsedEvent = false;
}

ApvAnalysis::PedestalType SimplePedestalCalculator::pedestal

(

)

const [inline, virtual]

Return reconstructed pedestals.

Implements TkPedestalCalculator.

Definition at line 30 of file SimplePedestalCalculator.h.

References thePedestal.

{ return thePedestal;}

ApvAnalysis::PedestalType SimplePedestalCalculator::rawNoise

(

)

const [inline, virtual]

Implements TkPedestalCalculator.

Definition at line 29 of file SimplePedestalCalculator.h.

References theRawNoise.

{ return theRawNoise;}

void SimplePedestalCalculator::refinePedestal

(

ApvAnalysis::RawSignalType &

in

)

[private]

Definition at line 130 of file SimplePedestalCalculator.cc.

References edm::DetSet< T >::data, i, funct::sqrt(), theEventPerStrip, thePedestal, thePedSqSum, thePedSum, and theRawNoise.

Referenced by updatePedestal().

                                                                          {


  // keep adding th adc count for any events 

  unsigned int ii=0;
  ApvAnalysis::RawSignalType::const_iterator i= in.data.begin();
  for (; i < in.data.end(); i++) {
    
    thePedSum[ii]   += (*i).adc();
    thePedSqSum[ii] += ((*i).adc())*((*i).adc());
    theEventPerStrip[ii]++;
    
    ii++;
  }


  // calculate a new pedestal any events, so it will come for free when for the last event

  for (unsigned int iii = 0; iii < in.data.size(); iii++) {
    if (theEventPerStrip[iii] > 10 ) {
      int avVal   = (theEventPerStrip[iii]) 
        ? thePedSum[iii]/theEventPerStrip[iii]:0;

      double sqAvVal = (theEventPerStrip[iii]) 
        ? thePedSqSum[iii]/theEventPerStrip[iii]:0.0;

      double rmsVal  =  (sqAvVal - avVal*avVal > 0.0) 
        ? sqrt(sqAvVal - avVal*avVal) : 0.0;    
      
      
      if (avVal != 0 ) {
        thePedestal[iii] = static_cast<float>(avVal);
        theRawNoise[iii] = static_cast<float>(rmsVal);
      }
    }
  }

}

void SimplePedestalCalculator::resetPedestals

(

)

[inline, virtual]

Implements TkPedestalCalculator.

Definition at line 18 of file SimplePedestalCalculator.h.

References thePedestal, and theRawNoise.

                        {
    thePedestal.clear();
    theRawNoise.clear();
  } 

void SimplePedestalCalculator::setPedestals

(

ApvAnalysis::PedestalType &

in

)

[inline, virtual]

Implements TkPedestalCalculator.

Definition at line 22 of file SimplePedestalCalculator.h.

References thePedestal.

{thePedestal=in;}

void SimplePedestalCalculator::setRawNoise

(

ApvAnalysis::PedestalType &

in

)

[inline]

Definition at line 23 of file SimplePedestalCalculator.h.

References theRawNoise.

{theRawNoise=in;}

void SimplePedestalCalculator::updatePedestal

(

ApvAnalysis::RawSignalType &

in

)

[virtual]

Update pedestals with current event.

Implements TkPedestalCalculator.

Definition at line 53 of file SimplePedestalCalculator.cc.

References alreadyUsedEvent, initializePedestal(), TkStateMachine::isCalibrating(), TkStateMachine::isUpdating(), numberOfEvents, refinePedestal(), TkPedestalCalculator::theStatus, and updateStatus().

                                                                          {

 if (alreadyUsedEvent == false) {
    alreadyUsedEvent = true;
    numberOfEvents++;
    if (theStatus.isCalibrating()) {
      initializePedestal(in);
    } else if (theStatus.isUpdating()) {
      refinePedestal(in);
    }  
    updateStatus();
  }


}

void SimplePedestalCalculator::updateStatus

(

)

[virtual]

Request that status flag be updated.

Implements TkPedestalCalculator.

Definition at line 42 of file SimplePedestalCalculator.cc.

References eventsRequiredToCalibrate, TkStateMachine::isCalibrating(), numberOfEvents, TkStateMachine::setUpdating(), and TkPedestalCalculator::theStatus.

Referenced by updatePedestal().

                                           {
  if (theStatus.isCalibrating() && 
      numberOfEvents >= eventsRequiredToCalibrate) {
    theStatus.setUpdating();
  }
}

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Member Data Documentation

bool SimplePedestalCalculator::alreadyUsedEvent [protected]

Definition at line 49 of file SimplePedestalCalculator.h.

Referenced by newEvent(), and updatePedestal().

int SimplePedestalCalculator::eventsRequiredToCalibrate [protected]

Definition at line 46 of file SimplePedestalCalculator.h.

Referenced by initializePedestal(), SimplePedestalCalculator(), and updateStatus().

int SimplePedestalCalculator::numberOfEvents [protected]

Definition at line 45 of file SimplePedestalCalculator.h.

Referenced by initializePedestal(), updatePedestal(), and updateStatus().

std::vector<unsigned short> SimplePedestalCalculator::theEventPerStrip [protected]

Definition at line 44 of file SimplePedestalCalculator.h.

Referenced by init(), initializePedestal(), and refinePedestal().

ApvAnalysis::PedestalType SimplePedestalCalculator::thePedestal [protected]

Definition at line 41 of file SimplePedestalCalculator.h.

Referenced by init(), initializePedestal(), pedestal(), refinePedestal(), resetPedestals(), and setPedestals().

std::vector<int> SimplePedestalCalculator::thePedSqSum [protected]

Definition at line 43 of file SimplePedestalCalculator.h.

Referenced by init(), initializePedestal(), and refinePedestal().

std::vector<int> SimplePedestalCalculator::thePedSum [protected]

Definition at line 43 of file SimplePedestalCalculator.h.

Referenced by init(), initializePedestal(), and refinePedestal().

ApvAnalysis::PedestalType SimplePedestalCalculator::theRawNoise [protected]

Definition at line 42 of file SimplePedestalCalculator.h.

Referenced by init(), initializePedestal(), rawNoise(), refinePedestal(), resetPedestals(), and setRawNoise().

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The documentation for this class was generated from the following files:

• CalibTracker/SiStripAPVAnalysis/interface/SimplePedestalCalculator.h
• CalibTracker/SiStripAPVAnalysis/src/SimplePedestalCalculator.cc

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