# Up to now our concern (PSL) was to find out why we had some very loud glitches visible on PD1 and not on PD2. This seems to have been solved since 46399 (16/07, ~ 10H UTC) when we have discovered that the PD2 photodiode is likely flawed and eplaced it with PD1 photodiode.

Now the PD1 channel refers to the glitchy PD2 photodiode. This channel has no impact on the science since it is only a monitor signal and it is no more a releavant signal.

# PD2 channel (PD1 photodiode) is a good signal to monitor and check the correlation wrt h(t).

# it may be usefull to setup the same signal for PD2 (OMICRON_RATE_SNR_70_ADC_PSTAB_PD2_AC) ?

# at least the unlock pointed by a green circle is a fast unlock. PStab is just the witness of it and is not responsible for any trouble here. It is likely the same for each unlock ince PSTAB is not able to unlock the ITF (46397)  . See plot where EOM_CORR starts to drift before any other signal