swift data centres in the uk & italy · swift swift 1-day meeting, new orleans: 7 sep 2004 19...

SwiftSwift 1-day meeting, New Orleans: 7 Sep 2004

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Swift Data Centres in the UK & Italy

Julian Osborne - Leicester University


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European Swift Data Centres

• Sited in major partner institutes:• UK – University of Leicester

• Also responsible for XRT camera & other XRTsubsystems

• Italy – ASI Science Data Centre, Frascati &Osservatorio Astronomico di Brera, Milan

• ASI have provided Malindi ground station & XRTsoftware. OAB responsible for XRT mirror system

• Both also have post-launch roles in XRTsustaining engineering and calibration, and areproviders of burst advocates


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The basic idea• Data centres provide identical set of core Swift

data products from each instrument and areupdated simultaneously as data is ready

Rationale• Distributed data provision reduces load on US

data centre at HEASARC• Local data provision improves delivery to local

community• Local timezone helpdesk• Foster national Swift exploitation


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• Both sites make use of GSFC-provided DataTransfer System for automatic data transferfrom SDC at GSFC as soon as data is ready

• Each site uses a local variant of the GSFCdatabase population scripts to ingest data intoits own preferred relational databasemanagement system

• Each site may provide its own user interfacefor data access


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UK Swift Science Data Centre

http://www.swift.ac.uk

• Recently funded for ~3 yrs, with expectation ofcontinuation

• J Osborne – lead• 2 full-time scientist/programmers + 1 full-time

system manager/programmer• Based on LEDAS heritage• Required to achieve integration with UK VO

(AstroGrid)


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http://www.ledas.ac.uk

• LEDAS hosts XMM,Chandra, DSS-2, otherhigh energy mission data(and related cataloguesfrom HEASARC)

• Currently preparing forAstroGrid VOinteroperability andinitial WASP archive


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XMM50GB

Other23GB

ROSAT65GB ASCA

121GB

BLASTA165GB

Chandra366GB

DSS870GB

DSS: Digitised Sky Survey Chandra: Chandra Public ArchiveXMM: XMM Serendipitous Source Catalogue (1XMM) archiveASCA: ASCA Science ArchiveROSAT: ROSAT Public ArchiveBLASTA: Large catalogues (including GSC, 2MASS)Other: Other mission archives, including Ginga, Einstein


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• 4 dual XEON CPUs, 8TB RAID IDE disks,Gigabit network, UPS

• Architecture designed for maximumavailability system, with multiple failuremodes covered


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SDCSDC staging

MOCQL

World

Web server

bulk datastorage

DB server

LEDAS

backup tape robot

DB server

DTS & FTP


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Added value

In addition to provision of core archive data, thelatest calibrations & software and a helpdeskfunction, the UKSSDC aims to provide:

• Swift quick-look data• Swift data analysis workshops• Faulkes Telescopes spectrograph GRB data


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• 2-m robotic Faulkes Telescopesin Maui & Siding Spring,Australia

• Each has a 4_ resolutionspectrograph designed forprompt GRB follow-up

First (solar) spectrum at FT-N in Aug


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UKSSDC has

• Successfully taken part in the End-to-EndMission Readiness Test

• Established Swift database tables• Performed long-term soak test of DTS,

monitoring US-UK network throughput• Initial web site

UKSSDC will go live in Swift verification phase


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Italian Swift Archive Centre

http://www.asdc.asi.it

P Giommi – lead

ISAC – Italian Swift Archive Centreis hosted by

ASDC – ASI Science Data Centrewhile

OAB – Osservatorio Astronomico di Breraprovides serendipitous XRT source catalogue


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ASDC is the home of the BeppoSAX archive

• Future missions to be included:

2004 SwiftMars Express (Marsis)Pamela (TBC)

2005 AGILE2006 GLAST


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INTERNET

Italian backbone

FIREWALLServer

DATA PROCESSINGSERVERS

USERS’ PC

ISAC-ASDC Hardware and Lines Configuration

INTERNAL LAN 1 Gbit/s

EXTERNAL LAN2Mbit/s

EXTERNALNETWORK155Mbit/s

ROUTERs

Processing SoftwareDevelopment Server

WEB SoftwareDevelopment Server

Swift

CHANDRA Mirror

FTPServer

DTSServer

DMZ LAN 1 Gbit/s

WEBServer

BeppoSAXWFC

ASINET

ISAC-OAB2Mbit/s Swift SDC

2Mbit/s


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Added value (incomplete)

ASDC multi-mission simulator has beenextended to simulate Swift XRT event lists

• Simulates columns: X, Y, PI (energy), Time• Target + random or user sky• Point or extended sources• PSF a function of energy & off-axis angle• Integrated with ASDC interactive archive


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swift data centres in the uk & italy · swift swift 1-day meeting, new orleans: 7 sep 2004 19...

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