1 / 6

Data Quality

Data Quality. Eric van Herwijnen December 16 th 2002. Contents. Log files Procedures Standard histograms (SICBMC) Standard histograms (Brunel). Log file checking (some suggestions). Standard string prefix for errors in SICB If a qq decay file isn’t found, stop SICB

gus
Download Presentation

Data Quality

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Data Quality Eric van Herwijnen December 16th 2002

  2. Contents • Log files • Procedures • Standard histograms (SICBMC) • Standard histograms (Brunel)

  3. Log file checking (some suggestions) • Standard string prefix for errors in SICB • If a qq decay file isn’t found, stop SICB • Print the decay tree – take action if required particles aren’t found

  4. Procedure • Check 3 groups of data: • Minimum bias • Generic b’s plus channel • Generic c’s • Physics coordinator should indicate set of ‘OK’ datasets (that have been analysed), 10k events? • Master histograms are produced. Means and spreads are calculated. • Allowed discrepancies are defined. • Utility is created that calculates: • Correlation with master histograms • Deviations of means and spreads

  5. Standard histograms, SICBMC • Primary multiplicity before Geant • Total multiplicity after Geant • ATMC vz - Production point for particles. • AVMC vz - Decay points (vertices) for particles • ATMC mu background vz • No. or particles per event (ATMC) • No. of vertices per event (AVMC) • Primary zvtx • multiplicities of raw hits in subdetector systems. • hits in muon stations. • See http://lhcb-wdqa.web.cern.ch/lhcb-wdqa/pp2002/412800/sicbmc/index.html • And http://lhcb-wdqa.web.cern.ch/lhcb-wdqa/pp2002/61/sicbmc/index.html

  6. Standard histograms, Brunel • To do.

More Related