Events in 4 detector stations with missing Slave data

[153957]

Events # 9397 and # 9398 for station 502 on 25/5/2015 is missing their slave data.
The slave participated in the trigger (only a pulse in channel 2, 1432526145999032934).
Probably occurs more often, I just happen to stumble across it.
Check that this does not happen to often..