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Mission Operations Data Transfer

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Previous: Correlator Products

Mission Operations Data Transfer

Mission Element FTP Sites

The method for exchange of SVLBI data products will be via anonymous or restricted-access file transfer protocol (FTP) on designated computer sites. Table below lists the nodes involved in the data exchange process. Furthermore, an ISDN line between the JPL/DOTS and the RSOG is in place.

Table: Mission Element FTP Sites

Site Host Name IP Address Account
GOCG ftp.berc.rssi.ru 194.85.215.30 anonymous
RSOG ftp.asc.rssi.ru 133.74.17.21 anonymous
DOTS dots.jpl.nasa.gov 137.78.8.207 anonymous
Green Bank ftp.gb.nrao.edu 192.33.116.115 anonymous
JPL MMNAV oscar.jpl.nasa.gov 128.149.139.3 (*)
VLBA Correlator aspen.aoc.nrao.edu 146.88.5.8 vlbiobs (*)
S2 Correlator ftp.drao.nrc.ca 192.139.21.39 anonymous
  or 192.139.21.65  
U. of Calgary cougar.ras.ucalgary.ca 136.159.55.14 anonymous and (*)
EVN Regional Server vlbeer.ira.bo.cnr.it 192.167.165.196 evn (*)
VLBA Regional Server aspen.aoc.nrao.edu 146.88.5.8 vlbiobs (*)
ATNF Regional Server ftp.atnf.csiro.au 130.155.194.32 anonymous
DSN 70m Regional Server dsn.jpl.nasa.gov 137.79.62.111 anonymous
Arecibo server ftp.naic.edu 192.65.176.4 anonymous

(*) indicates that a password is needed to gain access to these accounts. These may be obtained on request. Passwords should not be exchanged by electronic means.

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Mission Element FTP Directory Structures

GOCG FTP Directory Structure

Root/ Sub/ Sub/ Sub/ Sub/ Sub/ Ext
spectr/ ra/ schedule/ longsched/     (gst)
      srtsched/     (srs)
      short/ spr/   (spr)
        tpf/   (tpf)
    status constraint/     (cns)
    data/ srt/ push/ kutlm/ (ktu)
        xsoe/   (xse)
    oddata/ predict/ short/   (opr)
        mid/   (opr)
        long/   (opr)
        mbc/   (onp)
      scef/     (scf)
      mbcicv/ track/   (icv)
      mbcodf/ xdop/   (odf)
      cpdop/     (...)

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RSOG FTP Directory Structure

Root/ Sub/ Sub/ Sub/ Sub/ Sub/ Ext
Radio-            
Astron/ RAoper/ status/ RSOG/     (svg)
      sat/     (ssa)
      corr/     (sco)
      grt/     (srt)
      gts/     (stX)
    schedule/ longsched/     (gst)
      grtsched/ drg/ mmmyy/ (drg, sum)
        evn/ mmmyy/ (skd, sum)
        japan/ mmmyy/ (drg, skd)
        s2/ mmmyy/ (skd, sum)
        vlba/ mmmyy/ (crd, sum)
        summary/   (sum)
      srtsched/     (srs)
    data/ srt/ push/ kutlm/ (ktu)
          delta_t/ (kcu)
          corrlog/ (klu, kls)
          perflog/ (kpu)
        gb/ kutlm/ (ktg)
          kutlm2/ (ktg)
          delta_t/ (kcg)
          corrlog/ (klg, ksg)
          perflog/ (kpg)
        dsn/ kutlm/ (ktd,ktm,ktt)
          delta_t/ (kcd,kcm,kct)
          corrlog/ (kld,klm,klt)
            (ksd,ksm,kst)
          perflog/ (kpd,kpm,kpt)
          mondata/ (kmd,kmm,kmt)
          phred/ (krd,krm,krt)
        xsoe/   (xse)
        corrinputs/ log/mmmyy/ (log.vs, slg.vs,
            (vlg.vs, log.Xz)
            (vlg.Xz, slg.Xz)
          delta_t/ (kcg,kcd,kcm,
            kct,kcu)
          calib/ (tsm.vs)
      grt/(TBD) corrinputs/ log/ (log.XX)
          clock/ (gps.XX),
          antab/ (agt.XX)
          pclod/ (pct.XX)
          uvflg/ (flg.XX)
  oddata/ predict/ short/     (opr)
      mid/     (opr)
      long/     (opr)
      mbc/     (onp)
    scef/       (scf)
    mbcodf/ cpband/     (odf)
      xdop/     (odf)
    jplodf/ xdop/     (odf)
    isasicv/ track/     (icv)
    jplicv/ track/     (icv)

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GBTS FTP Directory Structure

Dir Sub/ Sub/ File Ext
ovlbi/ in/   SRT Schedule srs
      Orbit prediction bsp
ovlbi/ out/   Time Corrections File kcg
      Time Components file tcg
      Data processing log kdg
      Performance Log kpg
      Weekly status file stg
      Telemetry headers files (THF) ktg
ovlbi/ out/ kutlm2/ 15-minute THFs ktg

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DOTS FTP Directory Structure

Dir/Sub Sub/ Sub/ Sub/ Sub/ Sub/ File Ext
pub/RadioAstron/ raoper/ data/ srt/ dsn/ delta_t/ Time Corrections File kcX
            Time Components File tcX
          dplog/ VLBA Data Processing Log klX
            S2 Data Processing Log ksX
          kutlm/ Telemetry Header File ktX
          kutlm2/ 10-minute THFs ktX
          mondata/ Monitor Data File kmX
          perflog/ Station Performance Log kpX
    schedule/ srtsched/     SRS Files srt
    status/ gts/     DSN GTS Status Reports stX
      nav/     JPL MMNAV Status Reports TBD
  oddata/ pred/       Predicted Orbit bsp
    rec/       Reconstructed Orbit bsp

Note: `X' is the DSN GTS identifier where d = Goldstone, m = Madrid, t = Tidbinbilla.

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NRAO Array Operations Center FTP Directory Structure

Most of the RadioAstron data files at the Array Operations Center (AOC) in Socorro are for internal use, rather than being served for other mission elements. The files to be used in preparation for observing by the VLBA and VLA telescopes, and the calibration files generated by these telescopes, use the same computer, directory structure, and naming convention as for ground VLBI experiments, and appear in password-protected accounts. This greatly simplifies operations at the AOC. Files that are specific to the RadioAstron mission are archived on aspen5 and can be accessed via the same password protected vlbiobs account as used for ground telescope observing files. Since the AOC is not responsible for serving most files to other mission elements, it is not guaranteed that the collections of files such as SRT schedule files will be complete or will contain the latest file version.

Most subdirectories are broken down according to month and year ("mmmyy") as is the standard practice at the AOC. Files containing data for multiple months will be placed in the subdirectory corresponding to the first data in the file.

From 1 April 1998 the VLBA FTP directory structure changed from the former structure /home/aspen2/vlbiobs/mmmyy to /home/aspen6/astronomy/mmmyy/pppppp, where `mmmyy' is a code for the month and year (UTC) of the beginning of the project and `pppppp' is the project code. This change has been been retrospectively to files from the beginning of January 1998: files before this time are in the old directory structure.

Table: AOC Directory Structure for Local Ground Telescope Files

Dir/Sub Sub/ Sub/ File Name
/magnolia2/vlbacorr/ vlbaclocks/ mmmyy/ Clock (GPS) Files gps.XX
Until 31Dec1997        
/aspen2/vlbiobs/   mmmyy/ VLBA & VLA Schedule Input OBS.key
      VLBA & VLA Card Files OBScrd.XX
      VLBA & VLA Sched Files OBSsched.XX
      VLBA Summary File OBS.sum
      VLBA Calibration File OBScal.vlba.Z
      VLA Calibration File OBScal.y.Z
From 1Jan1998        
/aspen6/vlbiobs/ astronomy/ mmmyy/pppppp/ VLBA & VLA Schedule Input OBS.key
      VLBA & VLA Card Files OBScrd.XX
      VLBA & VLA Sched Files OBSsched.XX
      VLBA Summary File OBS.sum
      VLBA Calibration File OBScal.vlba.Z
      VLA Calibration File OBScal.y.Z
    mmmyy/pppppp/jobs correlator job scripts  
    mmmyy/pppppp/sniffer quality control results  

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Penticton Correlator FTP Directory Structure

The Penticton Correlator FTP site is ftp.drao.nrc.ca. The anonymous FTP main directory is /pub/RadioAstron. Operations observation/experiment status summary (postscript file) will be stored in /pub/RadioAstron/CVOC_status.ps

Table: AOC Directory Structure for RadioAstron-Specific File

Dir/Sub Sub/ File Name
/home/aspen5/pub/rsog/yymmm/ srtsch/ SRT Schedule File YYMMDD.srs
    Observation Summary File YYMMDD.osf
  srtlog/ SRT log from RSOG OBSlog.vs
    SRT log from Tracking Station OBSlog.klX
  srttcf/ Time Correction File YYMMDDHHMM.kcX
    DSN Performance Summary summary
    Time Component File YYMMDDHHMM.tcX
  grtlog/ GRT Log File OBSlog.XX
  grtcal/ GRT Calibration File OBScal.XX
  odrec/ Reconstructed Orbits YYMMDD-YYMMDD-rs.bsp
  odpre/ Predicted Orbits YYMMDD-YYMMDD-p.bsp
  odtsv/ Tracking Station View Periods YYMMDD-YYMMDD-vp.ps

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University of Calgary FTP Directory Structure

Table: University of Calgary FTP Structure

Dir/Sub/ Sub/ Sub/ Sub/ Description
pub/RadioAstron/       Main directory
  OBS/ calib/   ASCII calibration data
    OBS_DQA1.txt   Level 1 DQA report
    OBS_DQA2.txt   Level 2 DQA report
usr/home/ RAstronobs/RAstron/     Main directory
    OBS/ OBS_DQA1.ps Level 1 DQA report (.ps)
      OBS_DQA1.txt Level 1 DQA report (text)
      OBS_DQA2.ps Level 2 DQA report (.ps)
      OBS_DQA2.txt Level 2 DQA report (text)

Note: OBS is the observation code for the particular observation.

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Center for Research in Earth and Space Technology (CREST)

The CREST anonymous FTP site is s2.sgl.crestech.ca. The anonymous FTP main directory is /pub/s2/. The S2 software download directory is /pub/s2/swload/. The documentation directory is /pub/s2/doc/.

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Regional Servers for GRT Schedules

The regional servers for GRT schedules are shown, together with the 'two-letter' codes for the telescopes/arrays in Table below. IP addresses for these FTP sites are given in Table:Mission Element FTP Sites The sub-directory containing the logs on most servers is of the form mmmyy, where mmmyy is the month and year of the start date (UTC) of the observation, e.g. sep97.

Table: GRTs and their Regional Server for schedule files.

Element Code Server
for schedule files		 Subdirectory
Arecibo AR aspen.aoc.nrao.edu astronomy/mmmyy/pppppp
ATCA (Narrabri) AT ftp.atnf.csiro.au /pub/people/vlbi/RadioAstron/schedules/mmmyy
Bear Lakes BL vlbeer.ira.bo.cnr.it vlbi_arch/mmmyy
Ceduna CD ftp.atnf.csiro.au /pub/people/vlbi/RadioAstron/schedules/mmmyy
Effelsberg EB vlbeer.ira.bo.cnr.it vlbi_arch/mmmyy
Goldstone GO aspen.aoc.nrao.edu astronomy/mmmyy/pppppp
Green Bank GB aspen.aoc.nrao.edu astronomy/mmmyy/pppppp
Hartebeesthoek HH ftp.atnf.csiro.au /pub/people/vlbi/RadioAstron/schedules/mmmyy
Hobart HO ftp.atnf.csiro.au /pub/people/vlbi/RadioAstron/schedules/mmmyy
Jodrell Bank JB vlbeer.ira.bo.cnr.it vlbi_arch/mmmyy
Kyazin KL vlbeer.ira.bo.cnr.it vlbi_arch/mmmyy
Kashima KA hotaka.mtk.nao.ac.jp mmmyy
Madrid RO aspen.aoc.nrao.edu astronomy/mmmyy/pppppp
Medicina MC vlbeer.ira.bo.cnr.it vlbi_arch/mmmyy
Metsahovi MH vlbeer.ira.bo.cnr.it vlbi_arch/mmmyy
Mopra MO ftp.atnf.csiro.au /pub/people/vlbi/RadioAstron/schedules/mmmyy
Nobeyama NO hotaka.mtk.nao.ac.jp mmmyy
Noto NT vlbeer.ira.bo.cnr.it vlbi_arch/mmmyy
Onsala ON vlbeer.ira.bo.cnr.it vlbi_arch/mmmyy
Shanghai SH vlbeer.ira.bo.cnr.it vlbi_arch/mmmyy
Tidbinbilla TI aspen.aoc.nrao.edu astronomy/mmmyy/pppppp
Torun TR vlbeer.ira.bo.cnr.it vlbi_arch/mmmyy
Urumqi UR vlbeer.ira.bo.cnr.it vlbi_arch/mmmyy
Usuda UD hotaka.mtk.nao.ac.jp mmmyy
VLA-27 Y aspen.aoc.nrao.edu astronomy/mmmyy/pppppp
VLBA VLBA aspen.aoc.nrao.edu astronomy/mmmyy/pppppp
WSRT WB vlbeer.ira.bo.cnr.it vlbi_arch/mmmyy

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Regional Servers for GRT logs etc

The regional servers for GRT logs are shown in Table: Regional Servers for GRT Schedules. Many are the same as the server for schedule files, but there are some differences in both the server used and/or the subdirectory used. IP addresses for these FTP sites are given in Table: Mission Element FTP Sites. The sub-directory containing the logs on most servers is of the form mmmyy, where mmmyy is the month and year of the start date (UTC) of the observation, e.g. sep97.

Table: GRTs and their Regional Server for log files, and clock data.

Element Code Server
for schedule log files		 Subdirectory
Arecibo AR ftp.naic.edu /pub/ast/vlbi/
ATCA (Narrabri) AT ftp.atnf.csiro.au /pub/people/vlbi/RadioAstron/logs/mmmyy
Bear Lakes BL vlbeer.ira.bo.cnr.it vlbi_arch/mmmyy
Ceduna CD ftp.atnf.csiro.au /pub/people/vlbi/RadioAstron/logs/mmmyy
Effelsberg EB vlbeer.ira.bo.cnr.it vlbi_arch/mmmyy
Goldstone GO dsn.jpl.nasa.gov /pub/vlbiscpr/mmmyy
Green Bank GB aspen.aoc.nrao.edu astronomy/mmmyy/pppppp
Hartebeesthoek HH ftp.atnf.csiro.au /pub/people/vlbi/RadioAstron/logs/mmmyy
Hobart HO ftp.atnf.csiro.au /pub/people/vlbi/RadioAstron/logs/mmmyy
Jodrell Bank JB vlbeer.ira.bo.cnr.it vlbi_arch/mmmyy
Kashima KA hotaka.mtk.nao.ac.jp vlbi_arch/mmmyy
Kalyazin KL vlbeer.ira.bo.cnr.it vlbi_arch/mmmyy
Madrid RO dsn.jpl.nasa.gov /pub/vlbiscpr/mmmyy
Medicina MC vlbeer.ira.bo.cnr.it vlbi_arch/mmmyy
Metsahovi MH vlbeer.ira.bo.cnr.it vlbi_arch/mmmyy
Mopra MO ftp.atnf.csiro.au /pub/people/vlbi/RadioAstron/logs/mmmyy
Nobeyama NO hotaka.mtk.nao.ac.jp vlbi_arch/mmmyy
Noto NT vlbeer.ira.bo.cnr.it vlbi_arch/mmmyy
Onsala ON vlbeer.ira.bo.cnr.it vlbi_arch/mmmyy
Shanghai SH vlbeer.ira.bo.cnr.it vlbi_arch/mmmyy
Tidbinbilla TI dsn.jpl.nasa.gov /pub/vlbiscpr/mmmyy
Torun TR vlbeer.ira.bo.cnr.it vlbi_arch/mmmyy
Urumqi UR vlbeer.ira.bo.cnr.it vlbi_arch/mmmyy
Usuda UD hotaka.mtk.nao.ac.jp vlbi_arch/mmmyy
VLA-27 Y aspen.aoc.nrao.edu astronomy/mmmyy/pppppp
VLBA VLBA aspen.aoc.nrao.edu astronomy/mmmyy/pppppp
WSRT WB vlbeer.ira.bo.cnr.it vlbi_arch/mmmyy

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File Naming Conventions

Filename conventions are described in the earlier sections this document. Further details are available from e.g. "ISAS server operation plan". Many filenames include a version letter, designated by [.v] in the filename. There is no version number for the first version of a file (i.e. the version number is blank). The first revision takes '.a', and subsequent revisions take the corresponding letter of the alphabet.

Filenames should always be in lower case. Experiment names should not have leading zeroes suppressed or removed, e.g. experiment code v001 should not be shortened to v1.

On-Line Storage Requirement

Individual mission elements are responsible for archiving their original and processed data products. The length of time for these items to remain on-line is TBD.

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Mission Element WWW sites

Mission Element WWW Site
RSOG http://www.asc.rssi.ru/radioastron/rsog/
Green Bank TS http://www.gb.nrao.edu/ovlbi/
Penticton correlator http://www.drao.nrc.ca/web/vlbi/spacevlbi.html
U. of Calgary http://www.ras.ucalgary.ca/Spacevlbi.html
NRAO Space VLBI http://www.nrao.edu/ julvesta/aoc_svlbi.html
JPL/DOTS http://sgra.jpl.nasa.gov/
ATNF http://wwwatnf.atnf.csiro.au/
JIVE http://www.nfra.nl/jive

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