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WEB DATA QUALITY ANALYSIS

WEB DATA QUALITY ANALYSIS. Jonathan Levell Jonathan.Levell@cern.ch (Summer Student). Working with: Eric van Herwijnen (EvH) Agnieszka Jacholkowska (AJ). TALK OUTLINE. Introduction How is the Data Quality Checking done? What is SICBCHK ? What is WDQA ? Results Typical Data

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WEB DATA QUALITY ANALYSIS

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  1. WEB DATA QUALITY ANALYSIS Jonathan Levell Jonathan.Levell@cern.ch (Summer Student) • Working with: • Eric van Herwijnen (EvH) • Agnieszka Jacholkowska (AJ)

  2. TALK OUTLINE • Introduction • How is the Data Quality Checking done? • What is SICBCHK? • What is WDQA? • Results • Typical Data • CERN/MAP • Summary

  3. AIMS • Check Data Quality (DQ): • During MC and DST production of test data • After each detector modification How • Produce a standalone DQ program which calls • checking routines supplied by subdetector groups • Provide WDQA package to display and compare • sets of histograms for each subdetector

  4. SICBMC RAWH SICBDST DST1/DST2 SICBCHK NTUPLE WDQA GIFS PostScript HTML

  5. SICBCHK • Fortran Program • Separate from SICBMC/SICBDST • (package called: SICBCHK) • Split into branches for each subdetector • Branches maintained individually • Latest version installed in September

  6. SICBCHK * = JL leaves on 15th September

  7. SICBCHK SICBCHK.F UGINIT.F CHKRUN.F UGLAST.F Initialisation Tidy Up For each event CHKTRIG.F SUANAL.F Subdetector Routines SUCHECK.F Miscellaneous Checks

  8. W.D.Q.A. • Package controlled by .lmac scripts • similar to PAW’s .kumac scripts • Small Interpreter written in C++ • Based on ROOT • Converts ntuple files to ROOT files • LMAC scripts can call ROOT macros • Easy to use • Manual currently being written • Eventually details in Computing meeting

  9. An Example .LMAC script // Conversion to ROOT files. hbookin ~/work/data/<<eventtype>>.hbook file 1 hbookin ~/work/data2/<<eventtype>>.hbook opt nowait outputdir velo ps velo.ps outputdir velo/gifs settitle Event Type: <<eventtype>> (Vertex) zone 1 2 set style default plot 1001 set ymax 250 set fillcolor 5 file 1 overlay 1001 // Call standard ROOT macro rootpad fit2gauss.c gifs page1 wait ps close close file 1 close

  10. Are the differences significant?

  11. Conclusions • Bigger sample required before real conclusions • can be drawn. • Differences currently at 3s level • Larger sample (500 events) will be requested, • if possible with same random seeds. More Generally... SICBCHK/WDQA still require more work but a new version will be released in mid-September

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