When the format of the first event in a record is allocated, it is assumed that no previous events have been received. Thus the data in one record are self contained. Lowercase denotes MSB part and all energy bits are contiguous. Adjacent to previous pixel. Second is the adjoined amplitude.
Second energy is the adjoined amplitude.
Adjacent to previous pixel. The header packet is a block of 136 bytes inserted into the science data nominally every 2 seconds. The slow housekeeping is a block of 120 bytes sent at variable intervals. During communications sessions, this is sent direct to the ground station at nominally once every 5s, otherwise it is stored on the spacecraft at intervals of about 1 minute. The Direct Monitors from JET-X are included in the spacecraft telemetry system and are the only monitors available when the instrument is switched off.