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Дата изменения: Wed Jul 2 02:04:10 2008
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XMM-Newton Science Analysis System


odfingest (odfingest-3.28) [xmmsas_20080701_1801-8.0.0]

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Data Quality Record

Finally there will be a data quality record for each instrument exposure and one for the spacecraft data. The following data quality information will be stored stored in the summary file:

• Number of packets that failed reception
• Number of event report
• Number of errors not resulting from user input
• Number of telemetry drops
• Total duration of these telemetry drops
• Number of OOLs

These items will be stored on a per exposure basis for each instrument and on a per observation basis for the spacecraft telemetry.

Data Quality Record

Line	Offset	Type	Description	Note
1	0	A12, 58X	'DATA QUALITY'	Note 1
2	0	A2, 1X	Instrument Id.	Note 2
2	3	A77	Comment	Note 3
3	0	A13, 1X	Exposure Id	Note 4
3	5	A66	Comment	Note 3
4	0	A4,1X	Number of packets failing reception	Note 5
4	5	A75	Comment	Note 3
5	0	A4,1X	Number of event reports	Note 6
5	5	A75	Comment	Note 3
6	0	A4,1X	Number PMS errors	Note 7
6	5	A75	Comment	Note 3
7	0	A4,1X	Number of telemetry drops	Note 8
7	5	A75	Comment	Note 3
8	0	A4,1X	Total duration of telemetry drops	Note 9
8	5	A75	Comment	Note 3
9	0	A4,1X	Number of out of limits	Note 10
9	5	A75	Comment	Note 3
10	0	A1,1X	Unscheduled/ scheduled/ not applicable flag	Note 11
10	3	A78	Comment	Note 3

1. Identifies the record as a Data Quality Record.
2. The syntax is ii (Section ).
3. All comments will have the syntax ' / text'.
4. The syntax is ppppppoolliieee (Section ).
5. Number of telemetry packets associated with the instrument/ spacecraft that failed reception during the period.
6. Number of event reports produced by the instrument/ spacecraft during the period.
7. Number of errors detected by the automatic telemetry processor for the instrument/ spacecraft during the period.
8. Number of drops in the instrument/ spacecraft telemetry during the period.
9. Total duration of the telemetry drops in the instrument/ spacecraft telemetry during the period.
10. Number of out of limits detected in the instrument/ spacecraft telemetry during the period.
11. Flag (S, U or X) indicating whether the exposure was scheduled (S) or unscheduled (U) and set to 'X' when it is not applicable (for the spacecraft data quality records).