RHESSI Tohban report, 12-jan-2004 to 20-jan-2004
H. Hudson, hhudson@ssl; L. Fletcher, fletcher@ssl

1. Solar Activity:

The program HSI_TOHBAN_FLARE_COUNTER has been improved a bit. It
now also reports the GOES events for which RHESSI got the entire
interval (>95%) - dubbed "excellent coverage". It is a surprisingly
common thing, mainly I think because a lot of the smaller GOES
events have short durations.

How many GOES flares occurred?
  Flares above B, C, M, X class were     19    20     2     0
And how many of these are listed in the RHESSI flare list?
  Flares above B, C, M, X class were     14    14     1     0
And how many had EXCELLENT coverage?
  Flares above B, C, M, X class were     11    11     1     0

There were RHESSI flares/GOES flares         142 /           41
over the time range 12-Jan-04 19-Jan-04

There was a notable "slow LDE" early Jan. 20 and an M6 as well, which 
RHESSI should have coverage for.

2. Memory Managment:

Decimation was returned to normal/normal (IDPU version 12) on Jan. 13
and remained there. Memory remained well-behaved up until today, when
a combination of particles and flares left us above 30%. Too soon to
require a decimation change just yet, but tomorrow please if the SSR
does not show some improvement.

This week's tohban didn't write easy-to-run software for monitoring
decimation, but here are Jim's instructions from last week again:

(You can obtain the IDPU version using the hsi_obs_summ_flag object:
e.g., 

oti = anytim(['29-dec-2003 0:00','5-jan-2004 0:00'])
d = o -> getdata(obs_time_i = oti)
ppp = o -> get(flag_name = 'idpu_control')

Or to plot
o -> plot, flag_name = 'idpu_control'

Then see http://sprg.ssl.berkeley.edu/~tohban/conversion.txt for the conversion.)

3. Data Gaps:

No important gaps

4. Cryocooler: 

ICP1T, the cold plate monitor #1 temperature, is now back to 83K following
a regular downward swing. IACCEL now topping 32 mG; particle counter A
is just completing a major excursion (not as large as the last, though)
and the daily SOH plot for particle counter B needs a range adjustment.

5. Data scan

Type <sswidl> to start SSW IDL
There's a good example of a front decimation correction in a flare of
18-jan-04 08:. Please click back and forth on the "corrections" button
in the browser - it looks to me as though there is a little error. But
maybe the correction does more than just the decimation itself and adds
a little spectral term. [post-meeting note: this does not seem like
anything interesting - HSH]