Observing using MoM • MoM – Astronomer’s tool to create LOFAR Observa1ons (GUI-‐ based/user-‐interac1ve) • Created XML-‐generator script for mul1ple observa1ons: BF, IM and piggybacking • Since October 2010, updated script func1onality (BF and IM): – Both clocks available (160MHz/200MHz) – Decimal degrees or sexagesimal coordinates allowed (or PSR, 3C name) – Full selec1on of HBA and LBA Filters available – Mul1ple Sta1on Beams (Sub-‐Array Poin1ngs) possible – Mul1ple Tied Array Beams possible [BF-‐only] – Accepts “survey” poin1ngs file as input • Aber observa1ons, XML-‐export to BF pipeline kick-‐off, also now works on CEP-‐2
upgrades & transi1on to CEP-‐2 • Known Pulsar Pipeline (pulp.sh) updated to process up to 50 beams (Fly’s Eye mode, Sta1on Beams), and mul1ple (19) Tied-‐Array beams • Debugged CEP-‐2 since Apr. 2011 • Daily Build of LUS (Pulsar Tools) is available (“use LUS”) • Day-‐of-‐the-‐week build of LUS (Pulsar Tools) is also available (“use LUS Sun”) • Pulp.sh updated to use “cexec” to farm out pipeline jobs to locus cluster nodes, and collect results on 2 “hoover” nodes: – Incoherentstokes – Coherentstokes – Fly’s Eye – Mul1-‐Sta1on Beam (Sub-‐Array Poin1ng) Observa1ons – Mul1-‐Tied Array Beam Observa1ons • Added BF Raw Voltage Pipeline (doRaw.csh) to Daily Build • Added combined CS+IS+FE results plots and FE sta1on maps • Pulp.sh processing 1me and I/O is problema1c; working on single file fix • Added psrchive, psrdada and dspsr OTF tools + data converters to LUS Pulsar Tools suite, within default install
Pulsar Search “Surveys” & Pipeline l LOFAR Pilot Pulsar Survey (LPPS) – 255 poin1ngs with 7 Sta1on Beams, 57min each [Christmas 2010] – HBA, Incoherentstokes, 26 Sta1ons – All processed with Known Pulsar Pipeline (on CEP-‐1); folds 3 known pulsars w/in FOV – All processed with the Search Pipeline (on Hydra cluster in Manchester) – Looked at 9,000 candidates; none are new pulsars; all appear to be RFI – To do: rework the sibing of candidates and re-‐fold; single pulsar search
Pulsar Search “Surveys” & Pipeline l LOFAR Tied-‐Array Survey (LOTAS) – 206 poin1ngs with 19 TA Poin1ngs, 17min each [May 2011] – HBA, Coherentstokes, Superterp-‐only (12 sta1ons) – All processed with Known Pulsar Pipeline (on CEP-‐2) ; folds 3 known pulsars w/in FOV of central beam – Started processing with the Search Pipeline on CEP-‐2 & Hydra cluster – To do: update pipelines w/psrfits format and re-‐run
Next? (6-‐12 months) • TBD near term: – Convert pipelines to use psrfits data format (“solves” I/O issues and data drop-‐outs) – Add (BF) requested func1onality to MoM; fix nomenclature for BF observa1ons/data – Integrate BF Raw Voltage pipeline into pulp.sh – Clean up CEP-‐1 (sub4, 5, 6) – Create RFI monitoring stats based on CEP-‐2 processed data – Change BF writer to use HDF5 file format (h5-‐>psrfits pipeline) – Search Pipeline improvements & data processing – Backup of CEP-‐2 pulsar observa1ons • TBD longer term: – Re-‐write pulp.sh in Python; wrap in Pipeline Framework – Use HDF5 format directly in pipeline – Automated BF pipeline kickoff using MoM/Scheduler
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