STAR QA Board

[videbaek <videbaek@bnl.gov>]

Hi Takahito,

Thanks a lot for this plot. This confirms my theory. I made two slide, 
attached, that shows the loss is clearly
related to the auto recoveries gone bad in a few cases. As before I 
suggest we drop this run but would be cautious
on a few subsequent runs for that night

best Flemming


On 2022-12-04 12:23, Takahito Todoroki wrote:
> Hello Flemming,
>
> Thank you very much for the useful input. The event number dependence
> of #tracks in the inefficient region has been added on page 17 of the
> slides:
> https://drupal.star.bnl.gov/STAR/system/files/2022_1129_Run19AuAu200QA.pdf
>
> It seems that the region was as efficient as the other regions at the
> beginning but deteriorated at least three times as the run continued.
> Right now it’s difficult to see if the deteriorations were sudden
> jumps or continuous changes due to the gaps in
> the event number because of inaccessible PicoDst files.
>
> Best regards,
> Takahito
>
> > On Dec 4, 2022, at 0:29, videbaek <videbaek@bnl.gov> wrote:
> >
> > Hallo Ting et al.
> >
> > I took at look at the other QA info we have on this run. There is
> > nothing obvious in the online QA plot
> > in the 2D plots (the eta-phi ineff for the run 192001 correspond to
> > sector 1), but if you look at the
> > charge dist vs. phi for itpc you see a small loss. These are not
> > split into eta> and < 0. The few runs during that night was noticed
> > by Tonko to have many autorecoveries for itpc S1-RDO1 and was
> > reprogrammed during the day. This by itself
> > should not cause ineffeciency as busy for the whole tpcreadout is
> > set.
> >
> > Would it be possible to make a plot of #tracks in for that sector
> > (eta>0 and phi =60deg +-15) vs event number
> > (appropriately binned) to see if the is there is a time dependence.
> > In any case the run should be marked as bad, but
> > it could be useful to understand what happened.
> >
> > best Flemming
> >
> > On 2022-12-03 06:36, Takahito Todoroki via STAR-QAboard-l wrote:
> > Hello Ting and all,
> > Thanks a lot for the minutes. Here is a follow-up for the homework:
> https://drupal.star.bnl.gov/STAR/system/files/2022_1129_Run19AuAu200QA.pdf
> > I have compared the phi distribution between run 20193001 and all
> > the
> > runs.
> > In 20193001, there is an inefficient area in TPC around phi = 1 &
> > eta
> > 0, which
> > seems to have caused the deviation close to 5 sigma.
> > As we discussed in the meeting, probably we should keep this run as
> > good, but
> > some analyses such as spectra measurements would require attention
> > to
> > this run.
> > Best regards,
> > Takahito
> > On Dec 3, 2022, at 2:22, Ting Lin via STAR-QAboard-l
> > <star-qaboard-l@lists.bnl.gov> wrote:
> > Hi all:
> > A brief minutes for today's meeting:
> > 1. 2019 200GeV Data QA by Takahito Todoroki:
> > 1) 97M events analyzed (138M in total), get three bad runs:
> > – 20191005: refmult
> > – 20191015: dE/dx
> > – 20192001: dE/dx
> > 2) run 20193001 has average phi at 4.9sigma, but below the 5sigma
> > cut. It would be useful to compare this run's phi distribution to
> > other runs.
> > We will continue to meet every two weeks.
> > Best,
> > Ting
> > -----Original Messages-----
> > From: "Ting Lin" <tinglin@sdu.edu.cn>
> > Sent Time: 2022-12-01 11:29:02 (Thursday)
> > To: "star-qaboard-l@lists.bnl.gov" <star-qaboard-l@lists.bnl.gov>
> > Cc:
> > Subject: QA Board Meeting Dec 2
> > Hi all:
> > We will have a QA Board meeting on Friday at noon BNL time.
> > Takahito has sent out an update on the Au+Au 200 QA, so we will
> > discuss this and also any other updates that may available.
> > https://drupal.star.bnl.gov/STAR/event/2022/12/02/QA-Board-Meeting
> > Join ZoomGov Meeting:
>
> https://urldefense.com/v3/__https://bnl.zoomgov.com/j/1618435669?pwd=L3B6M3JKcjRFMVFxQTNhaEdBdkZ5UT09__;!!P4SdNyxKAPE!AVtwKU9d7gouQ2g-TlUbb4y_YY5uO99mdb5YydNp7N5uNRfUYiZpdEJaFdUdmQzy8jeR4hdrva-mza1Bmv6l0ilLljmiKA0$
>
> > > Meeting ID: 161 843 5669
> > > Passcode: 194299
> > > All the previous agendas are listed in the page below:
> > > https://drupal.star.bnl.gov/STAR/comp/qa/pwg-qa/run-22-qa
> > > Thanks.
> > > Ting
> > _______________________________________________
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>
> --
> Flemming Videbaek
> senior scientist, emeritus
> videbaek @ bnl.gov [1]
> Brookhaven National Lab
> Physics Department
> Bldg 510D
> Upton, NY 11973
>
> phone: 631-344-4106
> cell     :  631-681-1596
>
>
>
> Links:
> ------
> [1] http://bnl.gov

--
Flemming Videbaek
senior scientist, emeritus
videbaek @ bnl.gov
Brookhaven National Lab
Physics Department
Bldg 510D
Upton, NY 11973

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

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