first noticed 2021.10.11 or earlier
still present as of 2022.01.19
- Q band, 3-bit
- BP amp solutions show dip in the middle of each baseband
- Mark says to not flag or note for now
example, colored by pol:
/lustre/aoc/projects/srdp/problem_data/ea23_BP/21B-267_2021_10_30_T15_13_17.181
