EDS Coda
Before a new PCA configuration is run by an Event Analyzer, the EDS ends the old run by attaching a coda. The coda contains information about the status of the EDS during the run, including errors and discrepancies between what was processed and what was recorded and telemetred.
The various pieces of coda information end up as keywords at the end of the header of the XTE_SA extension. They are prefaced by the DDESC keyword which contains a DDL string indicating the origin of the coda. For example:
O[XTE] & I[EDS] & D[0] & E[EA1]
shows that the coda in question refers to EA1 on the "A" side of the EDS. Next come the individual coda items comprising:
- ConfigId: This field is identical to the Configuration Id in the Parameter Block used by the observation.
- EARunStart: This specifies the actual (as opposed to scheduled) starting time of the observation (in MajorTicks).
- PartCount: This specifies how many partitions of data were generated (but not necessarily telemetered) by the observation.
- TyperErrCount: This is the total number of discrepancies between the encoded Typer Table and the actual Typer Table, after the observation (Value has meaning for PCA Modes Only).
- TyperErrOffset: This identifies the Typer Table offset which contained the first discovered discrepancy (Value has
meaning for PCA Modes Only).
- TyperErrValue: This identifies the value that was read at the Typer Table offset, which didn't match the encoded
table (Value has meaning for PCA Modes Only).
- RecodErrCount: This is the total number of discrepancies between the encoded Recoder Tables and the actual Recoder Table, after the observation (Value has meaning for PCA Modes Only).
- RecodErrOffset: This identifies the Recorder Table offset which contained the first discovered discrepancy (Value has meaning for PCA Modes Only).
- RecodErrValue: This identifies the ,value that was read at the Recoder Table offset, which didn't match the encoded table (Value has meaning for PCA Modes Only).
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