STAR QA Board

[videbaek <videbaek@bnl.gov>]

Just a comment to first item 2), that was discussed with fastoffline QA. 
This was caused bad or none pedestals
due to a non-completed pedestal runs for TPC.

-Flemming


On 2022-03-18 13:24, Ting Lin via STAR-QAboard-l wrote:
> Hi all:
>
> A brief minutes for today's meeting:
> https://drupal.star.bnl.gov/STAR/comp/qa/pwg-qa/run-22-qa
>
> For Run-22 offline QA:
>  1). Run 23070009: TPC sector-by-sector hit distributions skewed. Gene
> found that this was caused by a bad space-charge correction scaler in
> one file, that caused the average hit positions to be shifted. Gene
> will zero out the TPC status for a short period around this errant
> scaler so that the data won't be used in analyses.
>   -> It also happen for day-66 last week. If the shift is > 10cm, it
> will fail and stop the production. But this run is below this
> threshold.
>  2). Runs 23073028 – 033 have very low hit densities in most sectors
> in the anode 3 & 4 region. Shift log reported very high, ~100% TPX and
> iTPC dead time. Runs marked BAD by fast-offline QA.
>  3). Bad dE/dx mean and bands in run 23071024:
>  4). Also on day 073 the FCS trigger IDs were changed which affected
> the trigger grouping assignments used for the st_fwd data stream. This
> caused many of the “XX” triggers to be labeled “MB” in the
> fast-offline shift reports. This was quickly corrected by Jeff
> Landgraf and Gene and only affected a few runs from 23073070 – 074027.
> The QA shift crew (R. Witt) corrected the entries (MB -> XX) by hand
>  5). Run 23074012: Bad dEdx mean, Almost empty dEdx bands Empty BTOF
> 1/ b plot Almost empty MTD – TPC track matching plot. Usually these 5
> plots are either filled as usual, or are totally empty, e.g. when
> there is no start -time. Shift log reported run stoppage to take out
> di -muon trigger.
>
> From PWG:
>  1). Since last week, several mid-rapidity triggers like JP1 are
> discontinue to increase the rate for forward upgrade.
>  2). LF group found that for Run23069019-031, no TOF information in
> picoDst root files. Gene check the logfile, there are btof hits, but
> none of them match to TPC tracks. Maybe calibration issues for these
> runs.
>  3). Continue to see double vz peak.
>  4). TPC Vz - VPD Vz = 5cm
>
> Best,
> Ting
>
> > -----Original Messages-----
> > From: "Ting Lin" <tinglin@sdu.edu.cn>
> > Sent Time: 2022-03-17 09:19:07 (Thursday)
> > To: "star-qaboard-l@lists.bnl.gov" <star-qaboard-l@lists.bnl.gov>
> > Cc:
> > Subject: QA Board Meeting March 18
> >
> > Hi all:
> >
> > We will have a QA board meeting on Friday at noon BNL time.
> > https://drupal.star.bnl.gov/STAR/comp/qa/pwg-qa/run-22-qa
> >
> > If you have slides to show, please link to the meeting page (in below 
> > link) or send it to me.
> > https://drupal.star.bnl.gov/STAR/event/2022/03/18/QA-Board-Meeting
> >
> > It is daylight-saving time now at the US, so the meeting will be one 
> > hour earlier than before for people in China.
> >
> > Join ZoomGov Meeting:
> > https://urldefense.com/v3/__https://bnl.zoomgov.com/j/1618435669?pwd=L3B6M3JKcjRFMVFxQTNhaEdBdkZ5UT09__;!!P4SdNyxKAPE!Vf4NfWIsOJ36FVM6gMsyshfaGS_3RwuIml4ChzYH-t5GGZ1JqDFVCtiU48CuBFXvMTT86-yd5ss$
> > Meeting ID: 161 843 5669
> > Passcode: 194299
> >
> > Thanks.
> > Ting
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--
Flemming Videbaek
senior scientist
videbaek @ bnl.gov
Brookhaven National Lab
Physics Department
Bldg 510D
Upton, NY 11973

phone: 631-344-4106
cell     :  631-681-1596