Mission Operations Data Transfer

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.

(*) 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.

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)

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.

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

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

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.

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

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

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.

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.

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

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

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