Only the loudest of these saturated the noisemons, and it did so by hitting an analog limit at plus/minus 22000 counts.

I projected the drive signal into noisemon counts and looked at the last three injections on the list. In the first two, the noisemon signal tracks the drive, and the subtraction of the two is just noise. In the last (loudest) injection, the noisemon hits an analog saturation at both plus and minus 22,000 counts leaving a huge glitch in the subtracted data.

This is good because it suggests that the only important analog limit in the noisemon is this threshold. I don't have time to document it now, but I've tried the same with a set of loud detchar injections, which go up to hundreds of Hz, and I get the same behavior. So when the drive signal does not push the noisemon beyond 22,000 counts, we can trust the subtraction, and anything we see has entered the signal between the DAC and noisemon; it's a glitch in the electronics and not a result of the DARM loop.

Attached are the three subtractions, noisemon minus projected drive signal.