Earth Explorer Fixed Header
| id | field name | definition |
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| 0 | File_Name |
| xml string |
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The Logical File Name, i.e. the File Name excluding the extension
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| 1 | File_Description |
| xml string |
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A 1-line description of the File Type
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| 2 | Notes |
| xml string |
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Multi-lines free text. This can be used for any type of comment, relevant to that instance of the file.
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| 3 | Mission |
| xml string |
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A 1-word description of the Mission, coherent with the Mission element in the File Name.
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| 4 | File_Class |
| xml string |
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A 1-line description of the file class, coherent with the File Class element in the File Name.
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| 5 | File_Type |
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| 6 | Validity_Period |
| xml record |
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| id | field name | definition |
|---|
| 0 | Validity_Start |
| ascii time | size: 23 |
|---|
This is the UTC Validity Start Time, coherent with the Validity Start Time in the File Name, but in CCSDS ASCII format with time reference. Note that this can have the special value indicating "beginning of mission" (without an absolute time specified)
unit: "s since 2000-01-01"
value: if(str(., 23) == "UTC=9999-99-99T99:99:99", +inf, if(str(., 23) == "UTC=9999-12-31T23:59:59", +inf, if(str(., 23) == "UTC=0000-00-00T00:00:00", -inf, time(str(.), "'UTC='yyyy-MM-dd'T'HH:mm:ss|'TAI='yyyy-MM-dd'T'HH:mm:ss|'GPS='yyyy-MM-dd'T'HH:mm:ss|'UT1='yyyy-MM-dd'T'HH:mm:ss"))))
| ascii string | size: 23 |
|---|
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CCSDS ASCII datetime with time reference "RRR=YYYY-MM-DDThh:mm:ss". The reference RRR can be any of "UT1", "UTC", "TAI", or "GPS".
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| 1 | Validity_Stop |
| ascii time | size: 23 |
|---|
This is the UTC Validity Stop Time, coherent with the Validity Stop Time in the File Name, but in CCSDS ASCII format with time reference. Note that this can have the special value indicating "end of mission" (without an absolute time specified)
unit: "s since 2000-01-01"
value: if(str(., 23) == "UTC=9999-99-99T99:99:99", +inf, if(str(., 23) == "UTC=9999-12-31T23:59:59", +inf, if(str(., 23) == "UTC=0000-00-00T00:00:00", -inf, time(str(.), "'UTC='yyyy-MM-dd'T'HH:mm:ss|'TAI='yyyy-MM-dd'T'HH:mm:ss|'GPS='yyyy-MM-dd'T'HH:mm:ss|'UT1='yyyy-MM-dd'T'HH:mm:ss"))))
| ascii string | size: 23 |
|---|
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CCSDS ASCII datetime with time reference "RRR=YYYY-MM-DDThh:mm:ss". The reference RRR can be any of "UT1", "UTC", "TAI", or "GPS".
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| 7 | File_Version |
| ascii uint16 | size: 4 |
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A repetition of the File Version element in the File Name.
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| 8 | Source |
| xml record |
|---|
| id | field name | definition |
|---|
| 0 | System |
| xml string |
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Name of the Ground Segment element creating the file (e.g. FOS, PDS, SSALTO...)
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| 1 | Creator |
| xml string |
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Name of the tool, within the Ground Segment element, creating the file (e.g. CS-MCS, IPF1...)
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| 2 | Creator_Version |
| xml string |
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Version of the tool (e.g. 1.0, 2.1a ...)
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| 3 | Creation_Date |
| ascii time | size: 23 |
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This is the UTC Creation Date, in CCSDS ASCII format with time reference
unit: "s since 2000-01-01"
value: if(str(., 23) == "UTC=9999-99-99T99:99:99", +inf, if(str(., 23) == "UTC=9999-12-31T23:59:59", +inf, if(str(., 23) == "UTC=0000-00-00T00:00:00", -inf, time(str(.), "'UTC='yyyy-MM-dd'T'HH:mm:ss|'TAI='yyyy-MM-dd'T'HH:mm:ss|'GPS='yyyy-MM-dd'T'HH:mm:ss|'UT1='yyyy-MM-dd'T'HH:mm:ss"))))
| ascii string | size: 23 |
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CCSDS ASCII datetime with time reference "RRR=YYYY-MM-DDThh:mm:ss". The reference RRR can be any of "UT1", "UTC", "TAI", or "GPS".
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