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FIT-FDD#

FDD: General#

All QC plots are generated in 5 min. cycles. The histogram contents are reseted after each cycle. Please wait at least 5 min. from the start of the RUN to judge about the quality of collected data.

If a non-critical (i.e. expendable) QC task fails, please add a bookkeeping entry about it.

FDD: Quality summary#

fdd_summary_and_trend_bad

The left panel summarizes all FDD checks for the last QC cycle of the selected run. The top part shows a global aggregated quality with a text message suggesting actions for the QC shifter:

  • Quality: Bad: Inform the FIT on-call immediately
  • Quality: Medium: Follow individual check instructions
  • Quality: Good: All checks are OK
  • Quality: NULL: Some histograms are empty, inform the FIT on-call immediately

The bottom part of the summary shows individual check results and reasons for qualities Bad, Medium and NULL.

The right panel shows a time trend of the global quality for the selected run.

FDD: Out of bunch collisions#

[QC on EPN/QC nodes - plot integrated over the QC cycle]

fdd_bc_triggers

BC vs trigger correlation for the events which were detected but are not aligned (out-of-bunch) with LHC filling scheme. The number of out-of-bunch events depends on the trigger settings. The check is performed for the Vertex trigger.

Actions:

  • If WARNING - Add bookkeeping entry (once per run).
  • If ERROR - call FIT-on-call.

FDD: Fraction of events with CFD in ADC gate#

[QC on EPN/QC nodes - plot integrated over the QC cycle]

fdd_cfd_efficiency

Fraction of events with CFD in ADC gate in each detector channel. Horizontal lines show the levels below which the warnings/errors are raised.

Actions:

  • If WARNING - Add bookkeeping entry (once per run).
  • If ERROR - call FIT-on-call.

FDD: Fraction of events with the CFD in time gate#

[QC on EPN/QC nodes - plot integrated over the QC cycle]

fdd_cfd_gate

Fraction of events with CFD in time gate in each detector channel. Horizontal lines show the levels below which the warnings/errors are raised.

Actions:

  • If WARNING - Add bookkeeping entry (once per run).
  • If ERROR - call FIT-on-call.

FDD: Fraction of charge in ADC range#

[QC on EPN/QC nodes - plot integrated over the QC cycle]

fdd_cfd_gate

Fraction of charge in ADC range in each detector channel. Horizontal lines show the levels below which the warnings/errors are raised.

Actions:

  • If WARNING - Add bookkeeping entry (once per run).
  • If ERROR - call FIT-on-call.

FDD: Validation of hardware (HW) triggers in software (SW)#

[QC on EPN/QC nodes - plot integrated over the QC cycle]

fv0_cfd_gate

Fraction of only software or hardware (SW + HW) triggers. In ideal case both the FW and SW triggers or nighther of them should be present in a given event. Horizontal lines show the levels below which the warnings/errors are raised.

Actions:

  • If WARNING - Add bookkeeping entry (once per run).
  • If ERROR - call FIT-on-call.

Known issues#

  • The Out of bunch collisions plot can be ignored in SYNTHETIC runs at the moment (i.e. no need to take any actions in case of not GOOD quality). The BC distribution is not simulated properly in MC and will always cause problems in this plot.