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#include <DTTimeBoxFitter.h>
Public Member Functions | |
| DTTimeBoxFitter (const TString &debugFileName=TString("")) | |
| Constructor. | |
| std::pair< double, double > | fitTimeBox (TH1F *hTimeBox) |
| Fit the rising edge of the time box returning mean value and sigma (first and second respectively) | |
| void | getFitSeeds (TH1F *hTBox, double &mean, double &sigma, double &tBoxMax, double &xFitMin, double &xFitMax) |
| Automatically compute the seeds the range to be used for time box fit. | |
| void | getInteractiveFitSeeds (TH1F *hTBox, double &mean, double &sigma, double &tBoxMax, double &xFitMin, double &xFitMax) |
| Ask the user to provide the seeds. | |
| void | setFitSigma (double sigma) |
| void | setInteractiveFit (bool isInteractive) |
| Switch to interactive fit. | |
| void | setRebinning (int reb) |
| Set the rebin. | |
| void | setVerbosity (unsigned int lvl) |
| Set the verbosity of the output: 0 = silent, 1 = info, 2 = debug. | |
| virtual | ~DTTimeBoxFitter () |
| Destructor. | |
Private Attributes | |
| TFile * | hDebugFile |
| bool | interactiveFit |
| int | rebin |
| double | theSigma |
| unsigned int | theVerbosityLevel |
Fit the rising edge of the time box with the integral of a gaussian returning the mean value and the sigma.
Definition at line 20 of file DTTimeBoxFitter.h.
| DTTimeBoxFitter::DTTimeBoxFitter | ( | const TString & | debugFileName = TString("") | ) |
Constructor.
Definition at line 23 of file DTTimeBoxFitter.cc.
References hDebugFile, interactiveFit, and rebin.
: hDebugFile(0), theVerbosityLevel(0), theSigma(10.) { // Create a root file for debug output only if needed if(debugFileName != "") hDebugFile = new TFile(debugFileName.Data(), "RECREATE"); interactiveFit = false; rebin = 1; }
| DTTimeBoxFitter::~DTTimeBoxFitter | ( | ) | [virtual] |
Destructor.
Definition at line 34 of file DTTimeBoxFitter.cc.
References hDebugFile.
{
if(hDebugFile != 0) hDebugFile->Close();
}
| pair< double, double > DTTimeBoxFitter::fitTimeBox | ( | TH1F * | hTimeBox | ) |
Fit the rising edge of the time box returning mean value and sigma (first and second respectively)
Compute the ttrig (in ns) from the Time Box.
Definition at line 42 of file DTTimeBoxFitter.cc.
References gather_cfg::cout, getFitSeeds(), getInteractiveFitSeeds(), interactiveFit, intGauss(), timingPdfMaker::mean, rebin, and theVerbosityLevel.
{
hTimeBox->Rebin(rebin);
// Check if the histo contains any entry
if(hTimeBox->GetEntries() == 0) {
cout << "[DTTimeBoxFitter]***Error: the time box contains no entry!" << endl;
return make_pair(-1, -1);
}
if(hTimeBox->GetEntries() < 50000) {
hTimeBox->Rebin(2);
}
// Get seeds for the fit
// The TimeBox range to be fitted (the rising edge)
double xFitMin=0; // Min value for the fit
double xFitMax=0; // Max value for the fit
double xValue=0; // The mean value of the gaussian
double xFitSigma=0; // The sigma of the gaussian
double tBoxMax=0; // The max of the time box, it is used as seed for gaussian integral
//hTimeBox->Rebin(2); //FIXME: Temporary for low statistics
TH1F *hTimeBoxForSeed = (TH1F*) hTimeBox->Clone(); //FIXME: test
if(!interactiveFit) {
getFitSeeds(hTimeBoxForSeed, xValue, xFitSigma, tBoxMax, xFitMin, xFitMax);
} else {
getInteractiveFitSeeds(hTimeBoxForSeed, xValue, xFitSigma, tBoxMax, xFitMin, xFitMax);
}
// Define the fitting function and use fit seeds
TF1 *fIntGaus = new TF1("IntGauss", intGauss, xFitMin, xFitMax, 3);
fIntGaus->SetParName(0, "Constant");
fIntGaus->SetParameter(0, tBoxMax);
fIntGaus->SetParName(1, "Mean");
fIntGaus->SetParameter(1, xValue);
fIntGaus->SetParName(2, "Sigma");
fIntGaus->SetParameter(2, xFitSigma);
fIntGaus->SetLineColor(kRed);
// Fit the histo
string option = "Q";
if(theVerbosityLevel >= 2)
option = "";
hTimeBox->Fit("IntGauss", option.c_str(), "",xFitMin, xFitMax);
// Get fitted parameters
double mean = fIntGaus->GetParameter("Mean");
double sigma = fIntGaus->GetParameter("Sigma");
// double constant = fIntGaus->GetParameter("Constant");
double chiSquare = fIntGaus->GetChisquare()/fIntGaus->GetNDF();
if(theVerbosityLevel >= 1) {
cout << " === Fit Results: " << endl;
cout << " Fitted mean = " << mean << endl;
cout << " Fitted sigma = " << sigma << endl;
cout << " Reduced Chi Square = " << chiSquare << endl;
}
return make_pair(mean, sigma);
}
| void DTTimeBoxFitter::getFitSeeds | ( | TH1F * | hTBox, |
| double & | mean, | ||
| double & | sigma, | ||
| double & | tBoxMax, | ||
| double & | xFitMin, | ||
| double & | xFitMax | ||
| ) |
Automatically compute the seeds the range to be used for time box fit.
Definition at line 136 of file DTTimeBoxFitter.cc.
References abs, filterCSVwithJSON::copy, gather_cfg::cout, delta, diffTreeTool::diff, hDebugFile, i, MergeJob_cfg::interval, j, dqm_diff::start, theSigma, theVerbosityLevel, and dtDQMClient_cfg::threshold.
Referenced by fitTimeBox().
{
if(theVerbosityLevel >= 1)
cout << " === Looking for fit seeds in Time Box:" << endl;
// The approximate width of the time box
static const int tBoxWidth = 400; //FIXE: tune it
int nBins = hTBox->GetNbinsX();
const int xMin = (int)hTBox->GetXaxis()->GetXmin();
const int xMax = (int)hTBox->GetXaxis()->GetXmax();
const int nEntries = (int)hTBox->GetEntries();
double binValue = (double)(xMax-xMin)/(double)nBins;
// Compute a threshold for TimeBox discrimination
const double threshold = binValue*nEntries/(double)(tBoxWidth*3.);
if(theVerbosityLevel >= 2)
cout << " Threshold for logic time box is (# entries): " << threshold << endl;
int nRebins = 0; // protection for infinite loop
while(threshold > hTBox->GetMaximum()/2. && nRebins < 5) {
cout << " Rebinning!" << endl;
hTBox->Rebin(2);
nBins = hTBox->GetNbinsX();
binValue = (double)(xMax-xMin)/(double)nBins;
nRebins++;
}
if(hDebugFile != 0) hDebugFile->cd();
TString hLName = TString(hTBox->GetName())+"L";
TH1F hLTB(hLName.Data(), "Logic Time Box", nBins, xMin, xMax);
// Loop over all time box bins and discriminate them accordigly to the threshold
for(int i = 1; i <= nBins; i++) {
if(hTBox->GetBinContent(i) > threshold)
hLTB.SetBinContent(i, 1);
}
if(hDebugFile != 0) hLTB.Write();
// Look for the time box in the "logic histo" and save beginning and lenght of each plateau
vector< pair<int, int> > startAndLenght;
if(theVerbosityLevel >= 2)
cout << " Look for rising and folling edges of logic time box: " << endl;
int start = -1;
int lenght = -1;
for(int j = 1; j < nBins;j++) {
int diff = (int)hLTB.GetBinContent(j+1)-(int)hLTB.GetBinContent(j);
if(diff == 1) { // This is a rising edge
start = j;
lenght = 1;
if(theVerbosityLevel >= 2) {
cout << " >>>----" << endl;
cout << " bin: " << j << " is a rising edge" << endl;
}
} else if(diff == -1) { // This is a falling edge
startAndLenght.push_back(make_pair(start, lenght));
if(theVerbosityLevel >= 2) {
cout << " bin: " << j << " is a falling edge, lenght is: " << lenght << endl;
cout << " <<<----" << endl;
}
start = -1;
lenght = -1;
} else if(diff == 0 && (int)hLTB.GetBinContent(j) == 1) { // This is a bin within the plateau
lenght ++;
}
}
if(theVerbosityLevel >= 2)
cout << " Add macro intervals: " << endl;
// Look for consecutive plateau: 2 plateau are consecutive if the gap is < 5 ns
vector< pair<int, int> > superIntervals;
for(vector< pair<int, int> >::const_iterator interval = startAndLenght.begin();
interval != startAndLenght.end();
++interval) {
pair<int, int> theInterval = (*interval);
vector< pair<int, int> >::const_iterator next = interval;
while(++next != startAndLenght.end()) {
int gap = (*next).first - (theInterval.first+theInterval.second);
double gabInNs = binValue*gap;
if(theVerbosityLevel >= 2)
cout << " gap: " << gabInNs << "(ns)" << endl;
if(gabInNs > 20) {
break;
} else {
theInterval = make_pair(theInterval.first, theInterval.second+gap+(*next).second);
superIntervals.push_back(theInterval);
if(theVerbosityLevel >= 2)
cout << " Add interval, start: " << theInterval.first
<< " width: " << theInterval.second << endl;
}
}
}
// merge the vectors of intervals
copy(superIntervals.begin(), superIntervals.end(), back_inserter(startAndLenght));
// Look for the plateau of the right lenght
if(theVerbosityLevel >= 2)
cout << " Look for the best interval:" << endl;
int delta = 999999;
int beginning = -1;
int tbWidth = -1;
for(vector< pair<int, int> >::const_iterator stAndL = startAndLenght.begin();
stAndL != startAndLenght.end();
stAndL++) {
if(abs((*stAndL).second - tBoxWidth) < delta) {
delta = abs((*stAndL).second - tBoxWidth);
beginning = (*stAndL).first;
tbWidth = (*stAndL).second;
if(theVerbosityLevel >= 2)
cout << " Candidate: First: " << beginning
<< ", width: " << tbWidth
<< ", delta: " << delta << endl;
}
}
mean = xMin + beginning*binValue;
sigma = theSigma; //FIXME: estimate it!
tBoxMax = hTBox->GetMaximum();
// Define the fit range
xFitMin = mean-5.*sigma;
xFitMax = mean+5.*sigma;
if(theVerbosityLevel >= 1) {
cout << " Time Box Rising edge: " << mean << endl;
cout << " Time Box Width: " << tbWidth*binValue << endl;
cout << " = Seeds and range for fit:" << endl;
cout << " Seed mean = " << mean << endl;
cout << " Seed sigma = " << sigma << endl;
cout << " Fitting from = " << xFitMin << " to " << xFitMax << endl << endl;
}
}
| void DTTimeBoxFitter::getInteractiveFitSeeds | ( | TH1F * | hTBox, |
| double & | mean, | ||
| double & | sigma, | ||
| double & | tBoxMax, | ||
| double & | xFitMin, | ||
| double & | xFitMax | ||
| ) |
Ask the user to provide the seeds.
Definition at line 109 of file DTTimeBoxFitter.cc.
References gather_cfg::cout, timingPdfMaker::mean, theSigma, and theVerbosityLevel.
Referenced by fitTimeBox().
{
if(theVerbosityLevel >= 1)
cout << " === Insert seeds for the Time Box fit:" << endl;
cout << "Inser the fit mean:" << endl;
cin >> mean;
sigma = theSigma; //FIXME: estimate it!
tBoxMax = hTBox->GetMaximum();
// Define the fit range
xFitMin = mean-5.*sigma;
xFitMax = mean+5.*sigma;
if(theVerbosityLevel >= 1) {
cout << " Time Box Rising edge: " << mean << endl;
cout << " = Seeds and range for fit:" << endl;
cout << " Seed mean = " << mean << endl;
cout << " Seed sigma = " << sigma << endl;
cout << " Fitting from = " << xFitMin << " to " << xFitMax << endl << endl;
}
}
| void DTTimeBoxFitter::setFitSigma | ( | double | sigma | ) | [inline] |
| void DTTimeBoxFitter::setInteractiveFit | ( | bool | isInteractive | ) | [inline] |
Switch to interactive fit.
Definition at line 49 of file DTTimeBoxFitter.h.
References interactiveFit.
{
interactiveFit = isInteractive;
}
| void DTTimeBoxFitter::setRebinning | ( | int | reb | ) | [inline] |
| void DTTimeBoxFitter::setVerbosity | ( | unsigned int | lvl | ) | [inline] |
Set the verbosity of the output: 0 = silent, 1 = info, 2 = debug.
Definition at line 44 of file DTTimeBoxFitter.h.
References theVerbosityLevel.
{
theVerbosityLevel = lvl;
}
TFile* DTTimeBoxFitter::hDebugFile [private] |
Definition at line 66 of file DTTimeBoxFitter.h.
Referenced by DTTimeBoxFitter(), getFitSeeds(), and ~DTTimeBoxFitter().
bool DTTimeBoxFitter::interactiveFit [private] |
Definition at line 69 of file DTTimeBoxFitter.h.
Referenced by DTTimeBoxFitter(), fitTimeBox(), and setInteractiveFit().
int DTTimeBoxFitter::rebin [private] |
Definition at line 70 of file DTTimeBoxFitter.h.
Referenced by DTTimeBoxFitter(), fitTimeBox(), and setRebinning().
double DTTimeBoxFitter::theSigma [private] |
Definition at line 71 of file DTTimeBoxFitter.h.
Referenced by getFitSeeds(), getInteractiveFitSeeds(), and setFitSigma().
unsigned int DTTimeBoxFitter::theVerbosityLevel [private] |
Definition at line 68 of file DTTimeBoxFitter.h.
Referenced by fitTimeBox(), getFitSeeds(), getInteractiveFitSeeds(), and setVerbosity().
1.7.3