21.6. SVD DQM#

The SVD DQM modules produce plots to assess the quality of the data. Only SVDUnpackerDQM is executed on HLT, the rest of the modules are executed on ExpressReco on a fraction of events.

21.6.1. DQM Modules#

This is a list of the svd dqm modules.

SVDDQMClustersOnTrack#

SVD DQM module for clusters related to tracks.

Package

svd

Library

libsvdDQM.so

Parameters
  • Clusters (str, default=’’)

    SVDCluster StoreArray name.

  • EventInfo (str, default=’’)

    SVDEventInfo StoreArray name.

  • RecoDigits (str, default=’’)

    SVDRecoDigits StoreArray name.

  • ShaperDigits (str, default=’’)

    SVDShaperDigits StoreArray name.

  • TriggerBin (int, default=-1)

    select events for a specific trigger bin, if -1 then no selection is applied (default)

  • desynchronizeSVDTime (bool, default=False)

    if True, svd time back in SVD time reference

  • histogramDirectoryName (str, default=’SVDClsTrk’)

    Name of the directory where histograms will be placed.

  • skipHLTRejectedEvents (bool, default=True)

    If True, skip events rejected by HLT.

SVDDQMDose#

The SVD dose-monitoring DQM module. Fills histograms of the SVD’s instantaneous occupancy and of SVD occupancy vs time since last injection and time in beam revolution cycle.

Package

svd

Library

libsvdDQM.so

Parameters
  • eventTypeFilter (unsigned int, default=7)

    Types of events to include in the plots (1 = less than noInjectionTimeout after HER injection, 2 = less than noInjectionTimeout after LER injection, 4 = more than noInjectionTimeout after any injection; bitwise or combinations are possible; see SVDDQMDoseModule::EEventType).

  • histogramDirectoryName (str, default=’SVDDose’)

    Name of the directory where histograms will be placed in the ROOT file.

  • noInjectionTimeout (float, default=30000.0)

    Time (microseconds) since last injection after which an event is considered “No Injection”. Also the limit for the x axis of the 2D histograms.

  • offlineZSShaperDigits (str, default=’SVDShaperDigitsZS5’)

    Name of the SVDShaperDigits to use for computing occupancy (default is SVDShaperDigitsZS5).

  • trgTypes (list(int), default=[13])

    Trigger types for event selection. Empty to select everything. Default is only Poisson w/o inj. veto.

SVDDQMEfficiency#

Create basic histograms to compute the average sensor efficiency.

Package

svd

Library

libsvdDQM.so

Parameters
  • Clusters (str, default=’’)

    name of StoreArray with SVD cluster.

  • Intercepts (str, default=’’)

    name of StoreArray with SVDIntercepts.

  • binsU (int, default=4)

    histogram bins in u direction.

  • binsV (int, default=6)

    histogram bins in v direction.

  • fiducialU (float, default=0.5)

    Fiducial Area, U direction.

  • fiducialV (float, default=0.5)

    Fiducial Area, V direction.

  • histogramDirectoryName (str, default=’SVDEfficiency’)

    Name of the directory where histograms will be placed.

  • maxHalfResidU (float, default=0.05000000074505806)

    half window for cluster search around intercept, U direction.

  • maxHalfResidV (float, default=0.05000000074505806)

    half window for cluster search around intercept, V direction.

  • minCDCHits (unsigned int, default=20)

    Number of CDC hits required in a track to be considered.

  • minSVDHits (unsigned int, default=1)

    Number of SVD hits required in a track to be considered.

  • momCut (float, default=0.0)

    Set a cut on the track momentum.

  • pValCut (float, default=0.0)

    Set a cut on the track p-value.

  • ptCut (float, default=1.0)

    Set a cut on the track transverse momentum.

  • saveExpertHistos (bool, default=False)

    if True, save additional histograms.

SVDDQMExpressReco#

Original SVD DQM module for ExpressReco.

Package

svd

Library

libsvdDQM.so

Parameters
  • Clusters (str, default=’SVDClusters’)

    Cluster StoreArray name.

  • CutSVDCharge (float, default=0.0)

    minimum charge (ADC) to fill the strip-hitmap histogram.

  • CutSVDClusterCharge (float, default=0.0)

    minimum charge (in e-) to fill the cluster-hitmap histogram.

  • ShaperDigits (str, default=’SVDShaperDigits’)

    not zero-suppressed ShaperDigits StoreArray name.

  • ShowAllHistos (int, default=0)

    Flag to show all histos in DQM, default = 0.

  • additionalPlots (bool, default=False)

    Flag to produce additional plots

  • desynchronizeSVDTime (bool, default=False)

    if True, svd time back in SVD time reference.

  • histogramDirectoryName (str, default=’SVDExpReco’)

    Name of the directory where histograms will be placed.

  • offlineZSShaperDigits (str, default=’SVDShaperDigitsZS5’)

    ShaperDigits StoreArray name - usually ZS5 strips.

  • skipHLTRejectedEvents (bool, default=True)

    If True, skip events rejected by HLT.

SVDDQMHitTime#

Make data quality monitoring plots for SVD Hit Time for bhabha, mu mu, and hadron samples seeded by different trigger times (ECL, CDC).

Package

svd

Library

libsvdDQM.so

Parameters
  • Clusters (str, default=’’)

    SVDCluster StoreArray name.

  • EventInfo (str, default=’’)

    SVDEventInfo StoreObjPtr name.

  • desynchronizeSVDTime (bool, default=False)

    if True, svd time back in SVD time reference

  • histogramDirectoryName (str, default=’SVDHitTime’)

    Name of the directory where histograms will be placed.

SVDDQMInjection#

Monitor SVD Occupancy after Injection.

Package

svd

Library

libsvdDQM.so

Parameters
  • ShaperDigits (str, default=’’)

    Name of SVD ShaperDigits to count occupancy - usually ZS5 strips.

  • histogramDirectoryName (str, default=’SVDInjection’)

    Name of the directory where histograms will be placed.

SVDUnpackerDQM#

DQM Histogram of the SVD Raw Data format.

Package

svd

Library

libsvdDQM.so

Parameters
  • DAQDiagnostics (str, default=’’)

    Name of DAQDiagnostics Store Array.

  • EventInfo (str, default=’’)

    Name of SVDEventInfo object.

  • histogramDirectoryName (str, default=’SVDUnpacker’)

    Name of the directory where histograms will be placed.

21.6.2. DQM Analysis Modules#

DQMHistAnalysisSVDDose#

Monitoring of SVD Dose with events from Poisson trigger w/o inj. veto. See also SVDDQMDoseModule.

Package

dqm

Library

libdqm_analysis_modules.so

Parameters
  • deltaTPVSuffix (str, default=’Occ:Pois:UpdateInterval’)

    Suffix for the PV that monitors the update interval of the PVs.

  • epicsUpdateSeconds (float, default=1000.0)

    Minimum interval between two successive PV updates (in seconds).

  • pvPrefix (str, default=’DQM:SVD:’)

    Prefix for EPICS PVs.

  • pvSuffix (str, default=’:Occ:Pois:Avg’)

    Suffix for EPICS PVs.

  • statePVSuffix (str, default=’Occ:Pois:State’)

    Suffix for the PV with the state of the monitoring.

DQMHistAnalysisSVDEfficiency#

DQM Analysis Module that computes the average SVD sensor efficiency.

Package

dqm

Library

libdqm_analysis_modules.so

Parameters
  • PVPrefix (str, default=’SVD:’)

    PV Prefix

  • RefHistoFile (str, default=’SVDrefHisto.root’)

    Reference histogram file name

  • effLevel_Error (float, default=0.9)

    Efficiency error (%) level (red)

  • effLevel_Warning (float, default=0.94)

    Efficiency WARNING (%) level (orange)

  • samples3 (bool, default=False)

    if True 3 samples histograms analysis is performed

  • statThreshold (float, default=100.0)

    minimal number of tracks per sensor to set green/red alert

DQMHistAnalysisSVDGeneral#

DQM Analysis Module that produces colored canvas for a straightforward interpretation of the SVD Data Quality.

Package

dqm

Library

libdqm_analysis_modules.so

Parameters
  • PVPrefix (str, default=’SVD:’)

    PV Prefix

  • RefHistoFile (str, default=’SVDrefHisto.root’)

    Reference histrogram file name

  • additionalPlots (bool, default=False)

    Flag to produce additional plots

  • occLevel_Empty (float, default=0.0)

    Maximum Occupancy (%) for which the sensor is considered empty

  • occLevel_Error (float, default=5.0)

    Maximum Occupancy (%) allowed for safe operations (red)

  • occLevel_Warning (float, default=3.0)

    Occupancy (%) at WARNING level (orange)

  • onlineOccLevel_Empty (float, default=0.0)

    Maximum OnlineOccupancy (%) for which the sensor is considered empty

  • onlineOccLevel_Error (float, default=10.0)

    Maximum OnlineOccupancy (%) allowed for safe operations (red)

  • onlineOccLevel_Warning (float, default=5.0)

    OnlineOccupancy (%) at WARNING level (orange)

  • printCanvas (bool, default=False)

    if True prints pdf of the analysis canvas

  • refMCTC (float, default=0.0)

    Mean of the signal time peak from Cosmic reference run

  • refMCTP (float, default=0.0)

    Mean of the signal time peak from Physics reference run

  • samples3 (bool, default=False)

    if True 3 samples histograms analysis is performed

  • statThreshold (float, default=10000.0)

    Minimal number of events to compare histograms

  • timeThreshold (float, default=6.0)

    Acceptable difference between mean of central peak for present and reference run

  • unpackerErrorLevel (float, default=1e-05)

    Maximum bin_content/ # events allowed before throwing ERROR

DQMHistAnalysisSVDOnMiraBelle#

DQM Analysis Module that extracts monitoring variables from SVD DQM histograms and provides input to MiraBelle.

Package

dqm

Library

libdqm_analysis_modules.so