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⇤ ← Revision 1 as of 2012-08-28 08:49:04
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| Deletions are marked like this. | Additions are marked like this. |
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| ||0|| 0-3 || 0x0F ||HFCORRVR || Height of formation code version used to find disk center. Vers 2 for all data to date.|| | || 0|| 0-3 || 0x0F ||HFCORRVR || Height of formation code version used to find disk center. Vers 2 for all data to date.|| |
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Prior to Aug 2012 hmi.lev1 had a keyword named HFCORRVR which can be taken as correct for fields 0 and 1 except that a 0 in the first nibble (field 0) should be taken as meaning missing. |
Calibration Version keywords
A keyword for calibration version keywords are included in level-1 data (CALVER32) through higher level products (CALVER64) starting in August 2012. This keyword is, at the start, considered to be a set of fields consisting of single hexidecimal digits.
The presently assigned values are from least significant nibble:
Field |
bits |
mask |
name |
Note |
0 |
0-3 |
0x0F |
HFCORRVR |
Height of formation code version used to find disk center. Vers 2 for all data to date. |
1 |
4-7 |
0xF0 |
CROTA2VR |
Version of CROTA2 in the Master pointing table. Vers 0 prior to Transit of Venus, then 1. |
A value of all bits set in a field signifies missing information. The default value of CALVER64 is 0xFFFFFFFFFFFFFFFF.
Prior to Aug 2012 hmi.lev1 had a keyword named HFCORRVR which can be taken as correct for fields 0 and 1 except that a 0 in the first nibble (field 0) should be taken as meaning missing.