We are not yet satisfied with the HAMs sensor correction performance.  The first plot attached is the detchar plot form Jan 6. Ignoring HAM3 (see all logs related to HAM3), only HAM6 shows the blend notches at 1Hz and 1.5Hz. Also the ISI units seem to be only slightly lower than the ground at low frequency.

The second plot attached shows HAM 4,5 and 6 with the sensor correction off and in high blend. The ground and the ISI should have similar amplitude. The third plot show the data that I grabbed from Jan 9th 2am to 3am, and recalibrated. I do find that ground and ISI have very similar amplitude, so we need to double check the automated plots.

Then, the fourth plot shows the transfer function between the ground instrument and the ISI. I averaged the transfer functions between 0.1Hz and 0.4Hz and got the following numbers. That doesn't match with the numbers that Sebastien posted. So I must be forgetting a number in one of the input filter banks, or there is an error in the script used to match the gains.