Introduction
We can download TM data from 2 different ways:
-
in real-time, or later, we can access from data downloaded during a given day
-
some days later, we can access to reconstitued TM database for a given generation date
SIRIUS data
SSH tunnel to JAXA’s computer
$ SSH_TUNNEL
Create an ssh tunnel on port 30200 between localhost and Jaxa reformatter computer (SIRIUS_IP)
This port 32000 is used by Jaxa libsdtp library to download TM data from SIRIUS database
Downloading TM
$ DOWNLOAD_SIRIUS MEA1/MEA2 yyyy-mm-dd
Download TM data from SIRIUS database
This script uses dedicated configuration parameters:
-
MODE = 2 (SDT_TLMRATE)
-
TIME_KIND = 2 (generation time)
-
VCID = 48 (merged)
-
ANTENNA = 240
It uses also a dedicated SOCKFILE, modified to point to localhost 127.0.0.1:30200
Finally uses another script DOWNLOAD_EXP to download in parallel HK, system HK and science data
Normal TM data
Download data from a given antenna
$ DOWNLOAD MEA1/MEA2 yyyy-mm-dd
This script uses dedicated configuration parameters:
-
MODE = 2
-
TIME_KIND = 1 (reception time)
-
VCID = 3 (not standard SDTP ⇒ REAL + REPRO)
-
ANTENNA = 167 (generic one ?)
Downloadind data (both case)
$ DOWNLOAD_EXP MEA1/MEA2 yyyy-mm-dd
That script will download in parallel 3 sources of data:
-
System-HK (APID 0x0608)
-
MEA memory dump (APID 0718)
-
MEA1/2 HK (APID 0x628 or 0x630)
-
MEA1/2 science (APID 0x528 or 0x530)
Then it will merde the various TM sources in signle L0 binary file
/DATA/SOLAR/DATA/L0/yyyymmdd/MEA[1/2]_TLM_yyyymmdd.dat
Check CCSDS TM packet
$ python -m selector yyyy-mm-dd <antenna>