LOFAR Status Update Imaging Busy Week 5 Kickoff Meeting 25 January 2010 Michael Wise*

Transcription

1 LOFAR Status Update Imaging Busy Week 5 Kickoff Meeting 25 January 2010 Michael Wise* *On behalf of the LOFAR collaboration 1

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3 Current Rollout Status Station/Item Cabinet LBA HBA Fibre CEP connection Validated CS302 RS307 RS503 RS106 RS208 CS030 CS401 CS021 CS032 RS306 CS301 CS501 RS509 CS103 CS001 CS002 2 L nok CS003 2 H nok CS004 CS005 ~8 H nok CS006 CS007 CS024 CS201 CS101 CS026 RS205 CS017 RS104 RS210 RS310 RS404 RS406 RS407 RS409 RS410 RS508 Effelsberg Tautenburg Garching Potsdam G Juelich V Nancay? Onsala J Chilbolton E Totals r l R H H LBA HBA CEP OBS 3

4 Standard Imaging Pipeline Current Status All core components in place Basic data-taking working Running on new cluster Automated execution Next Steps Readiness for MSSS Robustness, performance, etc. Limited functionality upgrades Testing, testing, testing... 4

5 Progress in 2009 Integration of DPPP, BBS, Imager, Source Finding and GSM into a pipeline Distributed processing using VDS files DPPP Flagger algorithms, data compression BBS Global Solver, solution based flagging, spectral index, Gaussian sources, initial ionospheric model, initial station beam model Imager MWImager script for CImager and CASA Imager Initial facet based correction Initial performance measurements Documentation: wiki, cookbook Automated builds Testing, commissioning, improving, testing, commissioning, improving, testing, commissioning, improving, 5

6 Recent Imaging Results 3C196 field LOFAR (30 75 MHz) (courtesy J. McKean) 6

7 Recent Imaging Results Cygnus MHz 11 (out of 14) station residual image; 1 subband; 6 hours (courtesy R. van Weeren) 7

8 Recent Imaging Results (courtesy B. Scheers, N. Mohan, J. Swinbank) ASTRON 8 Imaging BW 5 Kickoff, 25 Jan 2010

9 Readiness Checklist Preparation Stations SAS / MAC OLAP SIP SIP - DPPP SIP - BBS SIP - Imager SIP - Source Finding SIP - Sky Models SIP - General CEP processing Archive Support tasks Developer Commissioner Status MSSS Observation proposal Nijboer, de Bruyn, Survey KSP draft MSSS scheduling Survey KSP, Observatory needed Flux scale Brentjens, Bout in progress Finalized station beam models Beam Team in progress 20 validated stations roll out team in progress HBA ring splitter implemented multi beam observations ready HBA station taper needed Station Calibration LBA Wijnholds working Station Calibration HBA Parisa Noorishad in progress single beam observations Overeem Brentjens implemented multi beam observations Overeem Brentjens implemented writing to new storage facilities Broekema / Mol ready multi beam observations Mol in progress queue scheduling de Jong in progress rapid switching Romein in progress parallel incoherent beam mode Pulsar group in progress Table based corrections? possibly needed Flagger Renting / Van Diepen / Offringa Rafferty in progress Clock phase correction De Gasperin / Van der Tol de Bruyn under investigation Bandpass correction Pandey Mohan under investigation A-team subtraction Mohan / Van Weeren? needed Data compression Renting ready Beam model Van Zwieten Brentjens / Yatawatta in progress Ionospheric model Van der Tol Birzan implemented Solution based flagging Van Zwieten Heald / McKean / Pandey implemented Spectral index Van Zwieten Heald / McKean / Pandey implemented Extended sources Van Zwieten Heald / McKean / Pandey implemented phase shifting and averaging Van Zwieten Birzan in progress Application of DD effects Van Diepen / Van Zwieten / Van der Tol Rol / Rafferty in progress Facetting ASKAP / CASA Rol implemented determination uv-plane taper needed implemented Implementation of LSM Swinbank / Scheers Mohan in progress Quality check before GSM update needed Data quality checks needed Pipeline control Swinbank in progress Mosaicing software? in progress data formats USG in progress Header meta data updates needed visualization various in progress profiling Swinbank in progress phase 2 cluster hardware Broekema? needed data ingest procedure Renting in progress observation database Renting in progress search functionality Astrowise in progress hardware procurement Holties needed storage and retrieval Holties needed reprocessing functionality Holties needed test suites Surveys / Rol needed documentation Surveys / Busy Weeks in progress Highlights Flagging comparisons Global bandpass Station beams in BBS Solution-based flagging in BBS DDE in imager being tested Source finding / GSM integrated MAC/SAS connection layer Flux scale Scheduling not started in progress ready for testing ready 9

10 Schedule Busy Weeks Engineering time MSSS Workshops 10

11 LOFAR Users Forum 11

12 The End