For Run 2024 from total 686 laser run taken so far 220 runs have failed to produce drift velocity (~32%). The main reason to fail is not enough laser tracks to give a proper drift velocity estimation.
In the list  https://www.star.bnl.gov/~fisyak/star/Tpc/Laser/2024/FailedPass.list I have summarized  laser runs passed of failed with calculation of drift velocities.
I have noticed that there are 20 blocks of sequential failed runs (>= 3) which have some correlation with shifts (night 4:30 - 12:30, day 12:30 - 21:30, night 21:30 - 4:30 GMT)

25128048: 20240508.004938 Done
25128049 - 25129001 Failed

25134007: 20240513.085823 Done
25134016 - 25134052 Failed

25135064: 20240514.233013 Done
25135077 - 25135080 Failed

5138015: 20240517.114236 Done
25138016 - 25138055 Failed

25144015: 20240523.062535 Done
25144031 - 25144040 Failed

25162005: 20240610.045536 Done
25162006 - 25163008 Failed

25174018: 20240622.121323 Done
25174019 - 25174023 Failed

25176020: 20240624.112601 Done
25176033 - 25176048 Failed
25176059: 20240625.024342 Done
25176060 - 25176062 Failed

25177040: 20240625.193137 Done
25177051 - 25178001 Failed

25179054: 20240628.011442 Done
----------------- day 180 ---------------------------------
25180003 - 25180008 Failed

25186042: 20240704.160711 Done
25186043 - 25186058 Failed

25187050: 20240706.021956 Done
25188005 - 25188015 Failed
25188016: 20240706.073210 Done
25188028 - 25189038 Failed
25189039: 20240707.193224 Done
25189040 - 25190018 Failed

25190042: 20240708.161843 Done
25190055 - 25191003 Failed

25190042: 20240708.161843 Done
25190055 - 25191003 Failed

25200006: 20240718.062235 Done
25200007 - 25200050 Failed

25201038: 20240719.153216 Done
25201039 - 25202014 Failed

25203043: 20240721.225014 Done
25203052 - 25203058 Failed