HSK data MEA1 2014-11-19

We get regularly space HSK data from the start of the day : one HSK packet each 8 seconds, with sequence numbers growing from 4018 up to 7183.

Starting a T07:02:03, we get now up to ten HSK data records per seconds, starting from sequence number 3111.

  • What is this data sequence ?

  • Is there a dump of recorded data ?

  • How to detect this data?

It seems we are merging here data download from Real TIme mode and Reprocessed data.

2014-323T00:00:04.761718Z  Size =  253  APID = 0628  Seq = 4018 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T00:00:12.761718Z  Size =  253  APID = 0628  Seq = 4019 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T00:00:20.823718Z  Size =  253  APID = 0628  Seq = 4020 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T00:00:28.761718Z  Size =  253  APID = 0628  Seq = 4021 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T00:00:36.760718Z  Size =  253  APID = 0628  Seq = 4022 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T00:00:44.760718Z  Size =  253  APID = 0628  Seq = 4023 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T00:00:52.760718Z  Size =  253  APID = 0628  Seq = 4024 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T00:01:00.760718Z  Size =  253  APID = 0628  Seq = 4025 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T00:01:08.760718Z  Size =  253  APID = 0628  Seq = 4026 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T00:01:16.760718Z  Size =  253  APID = 0628  Seq = 4027 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T00:01:24.760718Z  Size =  253  APID = 0628  Seq = 4028 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T00:01:32.760718Z  Size =  253  APID = 0628  Seq = 4029 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T00:01:40.759718Z  Size =  253  APID = 0628  Seq = 4030 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T00:01:48.822718Z  Size =  253  APID = 0628  Seq = 4031 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T00:01:56.759718Z  Size =  253  APID = 0628  Seq = 4032 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
...
2014-323T07:00:11.297718Z  Size =  253  APID = 0628  Seq = 7169 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T07:00:19.297718Z  Size =  253  APID = 0628  Seq = 7170 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T07:00:27.297718Z  Size =  253  APID = 0628  Seq = 7171 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T07:00:35.297718Z  Size =  253  APID = 0628  Seq = 7172 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T07:00:43.297718Z  Size =  253  APID = 0628  Seq = 7173 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T07:00:51.297718Z  Size =  253  APID = 0628  Seq = 7174 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T07:00:59.296718Z  Size =  253  APID = 0628  Seq = 7175 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T07:01:07.296718Z  Size =  253  APID = 0628  Seq = 7176 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T07:01:15.296718Z  Size =  253  APID = 0628  Seq = 7177 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T07:01:23.296718Z  Size =  253  APID = 0628  Seq = 7178 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T07:01:31.296718Z  Size =  253  APID = 0628  Seq = 7179 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T07:01:39.296718Z  Size =  253  APID = 0628  Seq = 7180 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T07:01:47.296718Z  Size =  253  APID = 0628  Seq = 7181 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T07:01:55.296718Z  Size =  253  APID = 0628  Seq = 7182 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T07:02:03.295718Z  Size =  253  APID = 0628  Seq = 7183 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
#
restarting from Seq 3111, with up to 10 HSK data record per second
#
2014-323T07:02:03.795718Z  Size =  253  APID = 0628  Seq = 3111 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T07:02:03.983718Z  Size =  253  APID = 0628  Seq = 3112 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T07:02:04.045718Z  Size =  253  APID = 0628  Seq = 3113 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T07:02:04.170718Z  Size =  253  APID = 0628  Seq = 3114 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T07:02:04.233718Z  Size =  253  APID = 0628  Seq = 3115 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T07:02:04.358718Z  Size =  253  APID = 0628  Seq = 3116 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T07:02:04.483718Z  Size =  253  APID = 0628  Seq = 3117 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T07:02:04.545718Z  Size =  253  APID = 0628  Seq = 3118 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T07:02:04.670718Z  Size =  253  APID = 0628  Seq = 3119 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T07:02:04.795718Z  Size =  253  APID = 0628  Seq = 3120 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T07:02:04.858718Z  Size =  253  APID = 0628  Seq = 3121 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T07:02:04.983718Z  Size =  253  APID = 0628  Seq = 3122 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T07:02:05.045718Z  Size =  253  APID = 0628  Seq = 3123 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T07:02:05.170718Z  Size =  253  APID = 0628  Seq = 3124 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T07:02:05.295718Z  Size =  253  APID = 0628  Seq = 3125 Cat = 33 Pckid = 0 (HSK) Adu_size =     0
2014-323T07:02:05.545718Z  Size =  253  APID = 0628  Seq = 3126 Cat = 33 Pckid = 0 (HSK) Adu_size =     0

Example of MEA1 2014/11/19

Initialy, we were downloading both Real and Repro data :

* Real + repro

        APID = 0528     18230 packets (Science)
        APID = 0628     12301 packets (HSK)
        ---------------------
                        30531 packets

We made some tries recovering separately data for VCID = Real and VCID = Repro

* VCID = 1 : Repro

        APID = 0528     18230 packets (Science)
        APID = 0628      5876 packets (HSK)
        ---------------------
                        24106 packets
* VCID = 2 : Real

        APID = 0528         0 packets (Science)
        APID = 0628      6425 packets (HSK)
        ---------------------
                         6425 packets

* Total
        APID = 0528     18230 packets (Science)
        APID = 0628     12301 packets (HSK)
        ---------------------
                        30531 packets

So we found the same results, after merging the Real and Repro

Caution
  • When recovering HSK from VCID = Real, we get HSK records spaced by 8 seconds (SDTP timetags)

  • When recovering HSK from VCID = Repro, we get up to 10 HSK records per seconds (SDTP timetags), and we will have to recompute timetags from CCSDS time