The lockloss at 6:42:20 UTC was due to the saturation of SSFS correction, subsequent to a jump of PSL_PMC_TRA DC.
The jump on PMC_TRA can also be seen in PMC_REFL while AMP_DC stays constant. This suggests a malfunctionning of the PSTAB.
In deed we can see a sudden start of an oscillation at 16 kHz both on PSTAB and EOM_corr (see the attached figure). This oscillation is not explained yet.
