Message Log

The Message Log data are time series records taken over the course of a day. Data files are labeled with the date. Individual records are a single data collection interval, which lasts approximately 20 seconds. The Message Log data are messages returned from the GRS central electronics box (CEB). For a reference to all the message codes and their associated information see the "GRS Flight Software Message Dictionary." The Message Log data consists of the data sent from the CEB in response to some action taking place in the GRS and the associated timing information. The message data includes general messages and warnings as well as CEB error messages. The frequency of message data depends on CEB activity. The timing information (sc_ev_time and utc time) for each message is associated with the actual time the message was produced.

Column Descriptions
Column Name Type Bytes Units
SC_EV_TIME CHARACTER 13
The spacecraft time this message was generated, in ticks (256 per second).
UTC CHARACTER 23
SC_EV_TIME converted to UTC, stored as yyyy-mm-ddThh:mm:ss.sss.
MSG_ID CHARACTER 3
Identifies type of message. See Label for details.
GRS_PIXEL_NUMBER ASCII_INTEGER 10
Sequential counter of accumulation intervals, starts with one as grs orbit begins. Special case on reboot when the the CEB is in orbit 0, pixel 0.
GRS_ORBIT_NUMBER ASCII_INTEGER 10
Sequential counter of orbits from GRS CEB boot.
ODY_ORBIT_NUMBER ASCII_INTEGER 10
Orbit number common to all instruments aboard Odyssey. This orbit number is incremented by one as the spacecraft passes through the orbital descending node.
If non-zero, the data has been flagged bad. Definitions in bad_code.txt.
COUNTER ASCII_INTEGER 2
The packet counter from the message packet, values from 0 to 15.
ORIGIN ASCII_INTEGER 1
Origin of execution (loader or flight software).
MESSAGE_TEXT CHARACTER 128
More verbose description of message.