Analysis of an Existing Root File

An existing root file can be plotted/analysed in this TAB. There is a TCanvas embedded in the TAB and different characteristic histograms can be plotted there. The output root files from the TT6Client as well as from the HybridDialog GUI of the Lyon Software, Lt Software and ARC Software can be analysed here.

There are three different ways to plot histograms. A specific type can be selected in the "Plot Types" frame. The available options are,

The histogram to be plotted can be selected in the "pull down menu", "Histogram Type". The list of the quantities are

  1. Pedestal Vs Strips

  2. Pedestal Distribution

  3. Raw Noise Vs Strips

  4. Raw Noise Distribution

  5. Noise Vs Strips

  6. Noise Distribution

  7. Common Mode Distribution

  8. Calibration Charge vs Strip

    [this is the calibration charge at a fixed latency. This histogram is not available from ARC client]
  9. Calibration Charge Distribution

  10. Calibration Profile with Time

    [can ONLY be plotted for "One APV at a Time" or "More Than One APV at a Time". Can not be plotted in Module Option]
  11. Channel Flag vs Strip

  12. Channel Flag

  13. Maximum Charge Vs Strips

  14. Maximum Charge Distribution

  15. Rise Time Vs Strips

  16. Rise Time Distribution

  17. Data-Pedestal-CM vs Strips

  18. Data-Pedestal-CM Distribution

  19. Laser Pulse vs Strip

  20. Number of Cluster

  21. Number of Cluster

  22. Cluster Charge

  23. Cluster Position

  24. Cluster Width

  25. Cluster Noise

  26. Eta Function

  27. Cluster Shape

  28. Temperature vs Time

  29. Hybrid Current vs Time

  30. Leakage Current vs Time

The Histograms related to Cluster are available from the "Beam Test" output only. On the other hand the slow control variables (Temperature, Currents...) are available from Lt and ARCS output.


Aanalysing Bad Channel :
A channel is defined bad from its Noise, Pulse Height, and Peaking Time behaviors as defined in the Torino Workshop in July 2003. See Talk by Cristiano The cuts used here and the corresponding Badness Flags are the following :


  1. Noise Cut (absolute):
    • Peak Mode : 0.95 < Noise < 1.45
    • Deconvolution Mode : 1.3 < Noise < 2.0
    If a strip is outside this specification the flag value is assigned as +2 (above upper cut) and -2 (below lower cut) and is plotted in red
  2. Pulse Height Cut (in percentage wrt the mean):
    • Peak Mode : +- 15%
    • Deconvolution Mode : +- 20%
    If a strip is outside this specification the flag value is assigned as +4 (above upper cut) and -4 (below lower cut) and is plotted in Green
  3. Peaking Time Cut (absolute):
    • Peak Mode : +5 ....-5
    • Deconvolution Mode : -3 .... +5
    If a strip is outside this specification the flag value is assigned as +6 (above upper cut) and -6 (below lower cut) and is plotted in Blue
The Resulting histogram is plotted "Embedded Canvas" . At the same time a window would the bad channels are listed in a "Pop Up Window " with the Badness Flag . These numbers are also stored in a text file with name "badchannel.out".