Lockloss most likely due to PSL FSS Glitch. ASC and IMC lost lock within 63ms of one another, which is suspect. However, it seems AS_A lost lock first, so it might not be FSS related - unsure. Plots below.
No FSS tag on the lockloss tool
Tagging OpsInfo: I've added an ndscope template to the lockloss select tool that provides some good channels to look at to help determine if it was caused by the PSL glitches. Running it for this lockloss, I would say this does not look like an "FSS glitch" lockloss (see attached).