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PWGHF: Add histogram on vertex covariance matrix to QA task #4883

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Merged
jgrosseo merged 1 commit into from
Nov 22, 2020
Merged

PWGHF: Add histogram on vertex covariance matrix to QA task #4883

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25 changes: 25 additions & 0 deletions Analysis/Tasks/PWGHF/qaTask.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -26,6 +26,7 @@
#include <sstream>
#include "boost/algorithm/string.hpp"

using namespace o2::framework;
namespace o2fw = o2::framework;
namespace o2exp = o2::framework::expressions;
namespace o2df = o2::dataformats;
Expand Down Expand Up @@ -183,6 +184,18 @@ struct QAGlobalObservables {

histograms.add("multiplicity/numberOfTracks", qafeat::MakeTitle({qafeat::TrackMultiplicity}).c_str(), o2fw::kTH1D,
{{nBinsNumberOfTracks, numberOfTracksRange[0], numberOfTracksRange[1]}});

// covariance histograms
histograms.add("Covariance/xx", "xx;Cov_{xx} [cm]", kTH1D, {{200, -0.1, 0.1}});
histograms.add("Covariance/xy", "xy;Cov_{xy} [cm]", kTH1D, {{200, -0.1, 0.1}});
histograms.add("Covariance/xz", "xz;Cov_{xz} [cm]", kTH1D, {{200, -0.1, 0.1}});
histograms.add("Covariance/yy", "yy;Cov_{yy} [cm]", kTH1D, {{200, -0.1, 0.1}});
histograms.add("Covariance/yz", "yz;Cov_{yz} [cm]", kTH1D, {{200, -0.1, 0.1}});
histograms.add("Covariance/zz", "zz;Cov_{zz} [cm]", kTH1D, {{200, -0.1, 0.1}});
Comment on lines +189 to +194

@vkucera vkucera Nov 21, 2020

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The units are cm^{2} not cm.

@njacazio njacazio Nov 23, 2020

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True, I missed it when copying the lines, I will fix this in the next PR


// quality histograms
histograms.add("Quality/Chi2", "#Chi^{2};#Chi^{2}", kTH1D, {{100, 0, 10}});
histograms.add("Quality/Contributors", "Contributors;Contributors", kTH1D, {{100, 0, 100}});
}

void process(const o2::aod::Collision& collision, const o2::aod::Tracks& tracks)
Expand All @@ -198,6 +211,18 @@ struct QAGlobalObservables {
}

histograms.fill("multiplicity/numberOfTracks", nTracks);

// fill covariance variables
histograms.fill("Covariance/xx", collision.covXX());
histograms.fill("Covariance/xy", collision.covXY());
histograms.fill("Covariance/xz", collision.covXZ());
histograms.fill("Covariance/yy", collision.covYY());
histograms.fill("Covariance/yz", collision.covYZ());
histograms.fill("Covariance/zz", collision.covZZ());

// fill quality variables
histograms.fill("Quality/Chi2", collision.chi2());
histograms.fill("Quality/Contributors", collision.numContrib());
}
};

Expand Down