I generated many spectrograms to investigate OpLev glitches in the TypeB/Bp suspensions, from 09:40 to 09:20 JST today.

In general, the sum signal of the QPDs is not glitchy -> Not caused by the laser sources and power lines?

Some correlation with the PEM sensors (MIC/ACC) in the BS booth is found around 09:12, but not around 09:01 JST.
 

Very glitchy channels

K1:VIS-BS_TM_OPLEV_LEN_HOR_OUT_DQ
K1:VIS-BS_TM_OPLEV_TILT_HOR_OUT_DQ
K1:VIS-BS_TM_OPLEV_TILT_VER_OUT_DQ
K1:VIS-PR2_TM_OPLEV_LEN_VER_OUT_DQ
K1:VIS-SR2_TM_OPLEV_LEN_VER_OUT_DQ
K1:VIS-SR2_TM_OPLEV_TILT_HOR_OUT_DQ
K1:VIS-SR3_TM_OPLEV_LEN_HOR_OUT_DQ
K1:VIS-SR3_TM_OPLEV_LEN_VER_OUT_DQ

Little bit glitchy channels

K1:PEM-MIC_BS_BOOTH_BS_Z_OUT_DQ
K1:PEM-MIC_BS_TABLE_POP_Z_OUT_DQ
K1:PEM-MIC_BS_TABLE_POS_Z_OUT_DQ
K1:VIS-BS_TM_OPLEV_LEN_VER_OUT_DQ
K1:VIS-PR2_TM_OPLEV_LEN_HOR_OUT_DQ
K1:VIS-PR2_TM_OPLEV_TILT_HOR_OUT_DQ
K1:VIS-PR2_TM_OPLEV_TILT_VER_OUT_DQ
K1:VIS-SR2_TM_OPLEV_LEN_HOR_OUT_DQ
K1:VIS-SR2_TM_OPLEV_TILT_VER_OUT_DQ
K1:VIS-PR3_TM_OPLEV_LEN_HOR_OUT_DQ
K1:VIS-PR3_TM_OPLEV_LEN_VER_OUT_DQ
K1:VIS-PR3_TM_OPLEV_TILT_HOR_OUT_DQ
K1:VIS-PR3_TM_OPLEV_TILT_VER_OUT_DQ
K1:VIS-SR3_TM_OPLEV_TILT_HOR_OUT_DQ
K1:VIS-SR3_TM_OPLEV_TILT_VER_OUT_DQ
K1:VIS-PRM_TM_OPLEV_LEN_VER_OUT_DQ
K1:VIS-PRM_TM_OPLEV_TILT_HOR_OUT_DQ
K1:VIS-PRM_TM_OPLEV_TILT_VER_OUT_DQ
K1:VIS-SRM_TM_OPLEV_LEN_VER_OUT_DQ
K1:VIS-SRM_TM_OPLEV_TILT_VER_OUT_DQ

No glitch channels

K1:VIS-BS_TM_OPLEV_LEN_SUM_OUT_DQ
K1:VIS-BS_TM_OPLEV_TILT_SUM_OUT_DQ
K1:VIS-PR2_TM_OPLEV_LEN_SUM_OUT_DQ
K1:VIS-PR2_TM_OPLEV_TILT_SUM_OUT_DQ
K1:VIS-SR2_TM_OPLEV_LEN_SUM_OUT_DQ
K1:VIS-SR2_TM_OPLEV_TILT_SUM_OUT_DQ
K1:VIS-PR3_TM_OPLEV_LEN_SUM_OUT_DQ
K1:VIS-PR3_TM_OPLEV_TILT_SUM_OUT_DQ
K1:VIS-SR3_TM_OPLEV_LEN_SUM_OUT_DQ
K1:VIS-SR3_TM_OPLEV_TILT_SUM_OUT_DQ
K1:VIS-PRM_TM_OPLEV_LEN_HOR_OUT_DQ
K1:VIS-PRM_TM_OPLEV_LEN_SUM_OUT_DQ
K1:VIS-PRM_TM_OPLEV_TILT_VER_OUT_DQ
K1:VIS-PRM_TM_OPLEV_TILT_SUM_OUT_DQ
K1:VIS-SRM_TM_OPLEV_LEN_SUM_OUT_DQ
K1:VIS-SRM_TM_OPLEV_TILT_HOR_OUT_DQ
K1:VIS-SRM_TM_OPLEV_TILT_SUM_OUT_DQ