IDPU Version #  Decimation Table ID	Rear Decimation   (post FSW 2.4)*

8               T1                      NA
9               T2                      NA
10              T2                      NA
11              T3                      NA
12              T3 (normal Activity)    Normal Activity   (REARDECIMATION=0x43)
13              T4 (high Activity)      Normal Activity   (REARDECIMATION=0x43)
14              T3 (normal Activity)    Normal Activity   (REARDECIMATION=0x43)
15              T4 (high Activity)      Normal Activity   (REARDECIMATION=0x43)
16              T5 (CRAB ops)           Normal Activity   (REARDECIMATION=0x43)
17              T3 (normal Activity)    Vigorous Activity (REARDECIMATION=0x85)
18              T4 (high Activity)      Vigorous Activity (REARDECIMATION=0x85)
19              T3 (normal Activity)    High Activity     (REARDECIMATION=0x83)
20              T4 (high Activity)      High Activity     (REARDECIMATION=0x83)
21              T5 (CRAB ops)           Vigorous Activity (REARDECIMATION=0x85)
22              T6 (Very Quiet)         Normal Activity   (REARDECIMATION=0x43)
23              T6 (Very Quiet)         High Activity     (REARDECIMATION=0x83)
24              T6 (Very Quiet)         Vigorous Activity (REARDECIMATION=0x85)

* Prior to FSW 2.4 (approx. 12-dec-2002) There is no information about
rear decimation contained in the packets, but rear decimation was in
effect at the 0x83 level at various times for night and high latitudes.
See http://sprg.ssl.berkeley.edu/~dsmith/hessi/decimationrecord.html
for details.

To obtain the IDPU version control number, use the hsi_obs_summ_flag object:

o = hsi_obs_summ_flag(obs_time_interval = '28-jul-2003 '+['0:00','12:00'])
d = o -> getdata()
idpu_control = o -> get(flag_name='idpu_control')
; or
o -> plot, flag_name='idpu_control'

Last Update: 16-May-2007, jmm, jimm@ssl.berkeley.edu