2013.01.04 - WR

These files are for Bryce to test with BTAPS.

First I ran four L0 esvy files through the L0_decompress utility, in
order to decompress the CCSDS payloads.

$ svn co https://efw.ssl.berkeley.edu/svn/SOC/software/L0_decompress/
$ cd L0_decompress
$ python L0_decompress.py /disks/rbspdata/MOC_data_products/RBSPA/level_0_telemetry/efw/efw_rbspa_0123_243_03.ptp
$ python L0_decompress.py /disks/rbspdata/MOC_data_products/RBSPA/level_0_telemetry/efw/efw_rbspa_0124_243_04.ptp
$ python L0_decompress.py /disks/rbspdata/MOC_data_products/RBSPA/level_0_telemetry/efw/efw_rbspa_0125_243_05.ptp
$ python L0_decompress.py /disks/rbspdata/MOC_data_products/RBSPA/level_0_telemetry/efw/efw_rbspa_0126_243_04.ptp

This leaves you with ptp files of the same name in the current
directory that have decompressed payloads.

I then used the following script to strip the GDH and GA headers off
of the CCSDS packets and write the packets to file as a stream of
CCSDS packets.

================================================================================
strip_hdrs.py
================================================================================
import os
import ptp

filenames = os.listdir('.')
for filename in filenames:
    if(filename.endswith('.ptp')):
        print "Processing: %s" % (filename)
        p = ptp.ptp_parser(filename)
        p.set_mode('gdh_ga_only')

        outfilename = os.path.splitext(filename)[0] + '.ccsds'
        f = open(outfilename, 'wb')
        pkt_count = 0
        for pkt in p:
            f.write(pkt.serial)
            pkt_count += 1
        f.close()
        print "Wrote %d packets to %s" % (pkt_count, outfilename)
================================================================================

$ python strip_hdrs.py

This creates the .ccsds files:
efw_rbspa_0125_243_05.ccsds
efw_rbspa_0126_243_04.ccsds
efw_rbspa_0124_243_04.ccsds
efw_rbspa_0123_243_03.ccsds