Editing: TJ found my mistake, I should say ezca['TCS-ITMX_CO2_LASERPOWER_COMMAND'] = 2 to go to the requested power, not 1. 1 is search for home. Thank you TJ.
Lasty night I added some lines to Kevin's script that I hoped would make the CO2 powers step down from 1.7W to 0.9W at midnight.
As the screenshot shows the CO2 powers ended up at 7.8W for ITMX and 5 W if ITMY, which caused the PRG to drop and a lockloss.
The first attachment shows the requested and measured powers for the ITM CO2 in the power up step they normally do as we power up the IFO power. We can read off these plots that to adjust the power from 1.7W to 0.9W we should request an angle of 47 degrees from ITMX or 72 degrees from ITMY.
Next is the same plot for the time when I requested 0.9W. From this plot we can read off the information we would need to update the rotation stage calibration, for ITMX the power in should be 7.9W (it's set to 9W) and the minimum power angle (H1:TCS-ITMX_CO2_LASERPOWER_B) should be 35.5 degrees (it's set to 36.8deg). For ITMY power in should be 6.4W, (it's 6.5W), min power angle should be 58 degrees (it's 60 now).
Based on the calibration it has, the calculated angle for both ITMX and ITMY was very close to what I think it should have been. I don't understand why the angle didn't go to that angle but kept moving. It looks to me like what my script did is the same as what the guardian does to request a power change.
