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.