The STAR experiment

For Run-22 offline QA:
From Lanny Ray: 
1. On day 008, (last Saturday) iTPC 8, RDO 4 was masked, but possibly without rebooting the processor, resulting in what appears as a low number of hits in several runs, e.g. run 23008086. -> This will be discussed in the TPC meeting. 
2. Run 23009044 had an excess number of clusters for eta < 0
3. On day 012 a new spike appeared at ~5 units (GeV?) in the BTOW cluster energy distribution, e.g. run 23012073. It looks like a new hot towers in BEMC, and it is persist till the latest run.
4. On day 012, one tray in the MTD was masked out in backleg 3, channels > 48, e.g. run 23012073: -> This will be mask out through the run.

From pwg: 
1. Bassam found that some of the MuDst files have IO problem. FCS clustering in the production chain may be the reason (it was took out after day 008, then things look normal). But what happened at 364 is not understood, as FCS options were already included before this date.
3. Continue to see vertex difference TPC Vz - VPD Vz = 4cm
4. The signed DCA has large variations, and there are some small difference in proton mass and kaon mass for the positive and negative charges.-> The space charge is not well-calibrated, this maybe the reason..

For BES-II 14.6GeV data QA:
1. 369 Injection runs(~ 25.2%) excluded and No pile-up rejection
2. 116 bad runs(~7.92%) flagged.
3. A few inconsistencies between Ashik and Li-Ke could be due to uncertain rcf behaviour in reading the events