Tony, Camilla We went into Commissioning 15:56 to 15:59UTC as we needed to take SUS_PI into IDLE and manually change the phase of PI mode 24. It was circling through phases and ringing up, plot attached, t-cursor where we changed SUS_PI to IDLE.

We are unsure why this would have changed today, Tony checked that it hasn't rung up this high in the last week, his plot attached. We should check the SUS_PI settings to avoid this in future locks.

There is instructions on how SUS_PI works in 68610 68379 but all we did was take SUS_PI to IDLE and change H1:SUS-PI_PROC_COMPUTE_MODE24_PLL_PHASE to 50, shown in attached image. Tony suggests maybe SUS_PI doesn't need to be monitored as the phase already changes during observing.