Likely not actually a problem: this calibrates out.
first noticed 2021.10.11 or earlier
still present as of 2022.03.28
- Q band, 3-bit, L pol
- BP amp solutions show dip near 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
