Algorithm for timing run using APV tick marks. More...

#include <FedTimingAlgorithm.h>

Inheritance diagram for FedTimingAlgorithm:

Public Member Functions
	FedTimingAlgorithm (const edm::ParameterSet &pset, FedTimingAnalysis *const )

const Histo &	histo () const

virtual	~FedTimingAlgorithm ()

Public Member Functions inherited from CommissioningAlgorithm
void	analysis (const std::vector< TH1 * > &)

	CommissioningAlgorithm (CommissioningAnalysis *const )

	CommissioningAlgorithm ()

virtual	~CommissioningAlgorithm ()

Private Member Functions
void	analyse ()

void	extract (const std::vector< TH1 * > &)

	FedTimingAlgorithm ()

Private Attributes
Histo	histo_

Additional Inherited Members
Public Types inherited from CommissioningAlgorithm
typedef std::pair< TH1 *, std::string >	Histo

Protected Member Functions inherited from CommissioningAlgorithm
CommissioningAnalysis *const	anal () const

uint32_t	extractFedKey (const TH1 *const )

Detailed Description

Algorithm for timing run using APV tick marks.

Author: M. Wingham, R.Bainbridge

Definition at line 17 of file FedTimingAlgorithm.h.

Constructor & Destructor Documentation

FedTimingAlgorithm::FedTimingAlgorithm	(	const edm::ParameterSet &	pset,
		FedTimingAnalysis * const	anal
	)

Definition at line 16 of file FedTimingAlgorithm.cc.

   : CommissioningAlgorithm(anal),
     histo_(0,"")
 {;}

virtual FedTimingAlgorithm::~FedTimingAlgorithm ( )

inlinevirtual

Definition at line 23 of file FedTimingAlgorithm.h.

References histo().

23 {;}

FedTimingAlgorithm::FedTimingAlgorithm ( )

inlineprivate

Definition at line 29 of file FedTimingAlgorithm.h.

References analyse(), and extract().

29 {;}

Member Function Documentation

void FedTimingAlgorithm::analyse ( )

privatevirtual

Performs histogram anaylsis.

Implements CommissioningAlgorithm.

Definition at line 64 of file FedTimingAlgorithm.cc.

References CommissioningAnalysis::addErrorCode(), CommissioningAlgorithm::anal(), runEdmFileComparison::base, FedTimingAnalysis::base_, stringResolutionProvider_cfi::bin, funct::derivative(), FedTimingAnalysis::error_, runEdmFileComparison::found, FedTimingAnalysis::height_, histo_, cuy::ii, sistrip::invalid_, hpstanc_transforms::max, RecoTauDiscriminantConfiguration::mean, min(), sistrip::missingTickMark_, sistrip::mlCommissioning_, pileupCalc::nbins, sistrip::nullPtr_, sistrip::numberOfBins_, FedTimingAnalysis::peak_, sistrip::smallDataRange_, mathSSE::sqrt(), ctppsDiamondLocalTracks_cfi::threshold, FedTimingAnalysis::time_, and tmp.

Referenced by FedTimingAlgorithm().

                                  { 
 
   if ( !anal() ) {
     edm::LogWarning(mlCommissioning_)
       << "[FedTimingAlgorithm::" << __func__ << "]"
       << " NULL pointer to base Analysis object!";
     return; 
   }
 
   CommissioningAnalysis* tmp = const_cast<CommissioningAnalysis*>( anal() );
   FedTimingAnalysis* anal = dynamic_cast<FedTimingAnalysis*>( tmp );
   if ( !anal ) {
     edm::LogWarning(mlCommissioning_)
       << "[FedTimingAlgorithm::" << __func__ << "]"
       << " NULL pointer to derived Analysis object!";
     return; 
   }
 
   if ( !histo_.first ) {
     anal->addErrorCode(sistrip::nullPtr_);
     return;
   }
   
   // Transfer histogram contents/errors/stats to containers
   uint16_t non_zero = 0;
   float max = -1.e9;
   float min =  1.e9;
   uint16_t nbins = static_cast<uint16_t>( histo_.first->GetNbinsX() );
   std::vector<float> bin_contents; 
   std::vector<float> bin_errors;
   std::vector<float> bin_entries;
   bin_contents.reserve( nbins );
   bin_errors.reserve( nbins );
   bin_entries.reserve( nbins );
   for ( uint16_t ibin = 0; ibin < nbins; ibin++ ) {
     bin_contents.push_back( histo_.first->GetBinContent(ibin+1) );
     bin_errors.push_back( histo_.first->GetBinError(ibin+1) );
     //bin_entries.push_back( histo_.first->GetBinEntries(ibin+1) );
     if ( bin_entries[ibin] ) { 
       if ( bin_contents[ibin] > max ) { max = bin_contents[ibin]; }
       if ( bin_contents[ibin] < min ) { min = bin_contents[ibin]; }
       non_zero++;
     }
   }
 
   //LogTrace(mlCommissioning_) << " Number of bins with non-zero entries: " << non_zero;
   if ( bin_contents.size() < 100 ) { 
     anal->addErrorCode(sistrip::numberOfBins_);
     return; 
   }
   
   // Calculate range (max-min) and threshold level (range/2)
   float range = max - min;
   float threshold = min + range / 2.;
   if ( range < 50. ) {
     anal->addErrorCode(sistrip::smallDataRange_);
     return; 
   }
   //LogTrace(mlCommissioning_) << " ADC samples: max/min/range/threshold: " 
   //<< max << "/" << min << "/" << range << "/" << threshold;
   
   // Associate samples with either "tick mark" or "baseline"
   std::vector<float> tick;
   std::vector<float> base;
   for ( uint16_t ibin = 0; ibin < nbins; ibin++ ) { 
     if ( bin_entries[ibin] ) {
       if ( bin_contents[ibin] < threshold ) { 
     base.push_back( bin_contents[ibin] ); 
       } else { 
     tick.push_back( bin_contents[ibin] ); 
       }
     }
   }
   //LogTrace(mlCommissioning_) << " Number of 'tick mark' samples: " << tick.size() 
   //<< " Number of 'baseline' samples: " << base.size();
   
   // Find median level of tick mark and baseline
   float tickmark = 0.;
   float baseline = 0.;
   sort( tick.begin(), tick.end() );
   sort( base.begin(), base.end() );
   if ( !tick.empty() ) { tickmark = tick[ tick.size()%2 ? tick.size()/2 : tick.size()/2 ]; }
   if ( !base.empty() ) { baseline = base[ base.size()%2 ? base.size()/2 : base.size()/2 ]; }
   //LogTrace(mlCommissioning_) << " Tick mark level: " << tickmark << " Baseline level: " << baseline
   //<< " Range: " << (tickmark-baseline);
   if ( (tickmark-baseline) < 50. ) {
     anal->addErrorCode(sistrip::smallDataRange_);
     return; 
   }
   
   // Find rms spread in "baseline" samples
   float mean = 0.;
   float mean2 = 0.;
   for ( uint16_t ibin = 0; ibin < base.size(); ibin++ ) {
     mean += base[ibin];
     mean2 += base[ibin] * base[ibin];
   }
   if ( !base.empty() ) { 
     mean = mean / base.size();
     mean2 = mean2 / base.size();
   } else { 
     mean = 0.; 
     mean2 = 0.; 
   }
   float baseline_rms = 0.;
   if (  mean2 > mean*mean ) { baseline_rms = sqrt( mean2 - mean*mean ); }
   else { baseline_rms = 0.; }
   //LogTrace(mlCommissioning_) << " Spread in baseline samples: " << baseline_rms;
   
   // Find rising edges (derivative across two bins > range/2) 
   std::map<uint16_t,float> edges;
   for ( uint16_t ibin = 1; ibin < nbins-1; ibin++ ) {
     if ( bin_entries[ibin+1] && 
      bin_entries[ibin-1] ) {
       float derivative = bin_contents[ibin+1] - bin_contents[ibin-1];
       if ( derivative > 5.*baseline_rms ) {
     edges[ibin] = derivative;
     //LogTrace(mlCommissioning_) << " Found edge #" << edges.size() << " at bin " << ibin 
     //<< " and with derivative " << derivative;
       }
     }
   }
   
   // Iterate through "edges" std::map
   bool found = false;
   uint16_t deriv_bin = sistrip::invalid_;
   float max_deriv = -1.*sistrip::invalid_;
   std::map<uint16_t,float>::iterator iter = edges.begin();
   while ( !found && iter != edges.end() ) {
 
     // Iterate through 50 subsequent samples
     bool valid = true;
     for ( uint16_t ii = 0; ii < 50; ii++ ) {
       uint16_t bin = iter->first + ii;
 
       // Calc local derivative 
       float temp_deriv = 0;
       if ( static_cast<uint32_t>(bin)   < 1 ||
        static_cast<uint32_t>(bin+1) >= nbins ) { continue; }
       temp_deriv = bin_contents[bin+1] - bin_contents[bin-1];
       
       // Store max derivative
       if ( temp_deriv > max_deriv ) {
     max_deriv = temp_deriv;
     deriv_bin = bin;
       }
 
       // Check if samples following edge are all "high"
       if ( ii > 10 && ii < 40 && bin_entries[bin] &&
        bin_contents[bin] < baseline + 5*baseline_rms ) { valid = false; }
 
     }
 
     // Break from loop if tick mark found
     if ( valid ) { found = true; }
     else {
       max_deriv = -1.*sistrip::invalid_;
       deriv_bin = sistrip::invalid_;
       edges.erase(iter);
     }
 
     iter++;
   }
   
   // Set monitorables (but not PLL coarse and fine here)
   if ( !edges.empty() ) {
     anal->time_      = deriv_bin;
     anal->error_     = 0.;
     anal->base_      = baseline;
     anal->peak_      = tickmark;
     anal->height_    = tickmark - baseline;
   } else {
     anal->addErrorCode(sistrip::missingTickMark_);
     anal->base_   = baseline;
     anal->peak_   = tickmark;
     anal->height_ = tickmark - baseline;
   }
   
 }

void FedTimingAlgorithm::extract ( const std::vector< TH1 * > & )

privatevirtual

Extracts and organises histograms.

Implements CommissioningAlgorithm.

Definition at line 23 of file FedTimingAlgorithm.cc.

References CommissioningAnalysis::addErrorCode(), CommissioningAlgorithm::anal(), CommissioningAlgorithm::extractFedKey(), sistrip::FED_TIMING, CommissioningAnalysis::fedKey(), histo_, sistrip::mlCommissioning_, sistrip::numberOfHistos_, fftjetcommon_cfi::title, and sistrip::unexpectedTask_.

Referenced by FedTimingAlgorithm().

                                                                 { 
   
   if ( !anal() ) {
     edm::LogWarning(mlCommissioning_)
       << "[FedTimingAlgorithm::" << __func__ << "]"
       << " NULL pointer to Analysis object!";
     return; 
   }
   
   // Check number of histograms
   if ( histos.size() != 1 ) {
     anal()->addErrorCode(sistrip::numberOfHistos_);
   }
   
   // Extract FED key from histo title
   if ( !histos.empty() ) { anal()->fedKey( extractFedKey( histos.front() ) ); }
   
   // Extract histograms
   std::vector<TH1*>::const_iterator ihis = histos.begin();
   for ( ; ihis != histos.end(); ihis++ ) {
     
     // Check for NULL pointer
     if ( !(*ihis) ) { continue; }
     
     // Check name
     SiStripHistoTitle title( (*ihis)->GetName() );
     if ( title.runType() != sistrip::FED_TIMING ) {
       anal()->addErrorCode(sistrip::unexpectedTask_);
       continue;
     }
     
     // Extract timing histo
     histo_.first = *ihis;
     histo_.second = (*ihis)->GetName();
     
   }
 
 }