Summary of the housekeeping processing:

Updated 05/18/07


Each day when the TIDE summary plots are created, a binary file containing a 
time tag and the raw housekeeping bytes called tyymmdd0000_2400.hk is created 
and stored in /export/data/tide/hk.  Once a month these files are combined to
create a month-long file that is used to create the monthly trend housekeeping
plots.  See hk_trend_plot.txt for instructions on how to create the file and
the plots.

The month-long binary files are keeped in /export/data/tide/hk/old_data.  They
will have to use gunzip to uncompress them.  There are a series of C programs
in that directory and in /export/data/tide/hk/source that read the *hk files
and extract selected data.  Any program that has the line: BYTE hk_byte[49]; 
near the top can be used to process *hk files.  If the line has something
other than 49 it won't work.  If an executable exists for the program, it will
have the same name as the C source code but with out an extension.  If not, 
it can be created using: gcc -o <executable filename> <source code filename>

The tyymmdd*.hk file can be created for any time period using the standalone
processing code.  Just create a parameter file using lz_parm and '01' as the
response to the second and third prompts.

If none of the source code saves the necessary housekeeping data, then copy
the source code and edit it to save the necessary data.  Near the top of each
source file is the structure, struct Hk.  It describes each of the engineering
parameters.  The subroutine calc_temp converts hk bytes to temperature and 
hk_conv converts the rest of the hk bytes to engineering parameters.  You
can use these routines to determine what byte corresponses to what parameter.
At the end for each file is a short main program that contains fprintf 
statement(s) that can be edited to save the necessary parameters in an output
file.