EVN User Experiment Pipeline Feedback


Pipeline feedback for experiment EP096A. If you have any comments on this experiment please email the address below.
A detailed description of the pipeline output is available.

Last updated: Mon May 11 13:56:02 CEST 2015 zparagi@jive.nl

General Comments. ( Brief data summary and scan listing )
EC052C, L-band e-VLBI experiment on 2015 April 14. Participating telescopes were Effelsberg, Hartebeesthoek, Jodrell Bank (MkII), Onsala, Sheshan, Torun, Westerbork and Tianma (the new 65m in Shanghai, T6). This was the first e-VLBI experiment where Tianma took part; due to the limited bandwidth from Shanghai, Tianma was run at 512 Gbps (full bandwidthm but 1-bit sampling). Medicina and Noto still could not take part unfortunately.

The following subands were flagged in this pipeline because they were corrupt/highly unstable due to strong RFI or for another reason: Jb IF5, 7; Tr IF6; Sh: IF2, 5. Note SH gain was originally in the antabfs for T6, which is wrong. Starting from the nominal T6 gain, and using the constraint of the short SH-T6 baseline, best guess values was inserted for T6. Some other telescopes had smaller, best guess corretions applied in the ANTAB. Note T6 had very sparse TSYS data (no TPI interpolations), and the pipeline flagged T6 for the target data as a result. The longest baselines (especially T6 and SH) showed large phase variations that are not understood.

UPDATE: T6, Sh and Hh phase variations disappear when a sufficiently short SOLINT is USED. With ~1-2 min. SOLINT FRING apparently cannot cope with the bad integrations.

The target ASASSN-14LI was phase-referenced to J1250+1621.

The EVN reliability indicator (ERI) for this experiment was ERI = 0.84 . ERI* = 0.93 . (Ef=1, Hh=1, Jb2=0.75/1.0, On=1.0, Sh=0.75, Tr=0.88/1.0, Wb=1.0, T6=1.0)

Plots of the autocorrelations
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plots of the uncalibrated amplitude and phase against time
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Plots of the uncalibrated amplitude and phase against frequency channel
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The uncalibrated amplitude and phase of the crosshand correlations against frequency channel
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TSYS against time
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Telescope sensitivities from the a priori TSYS and Gain curves (the square of this number gives the antenna noise (SEFD) in Jy - the smaller the better).
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Fringe-fit phase solutions (including Parallactic Angle correction).
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Fringe-fit delay solutions
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Fringe-fit rate solutions
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Telescope bandpasses
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Calibrated amplitude and phase against time (a priori amplitude calibration and fringe-fit solutions applied).
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Calibrated amplitude and phase against frequency channel
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Naturally weighted dirty map (not useful for bright sources) produced before self-cal of:
OQ208: pdf (not available) , or FITS (not available) .
OJ287: pdf (not available) , or FITS (not available) .
J1250+1621: pdf (not available) , or FITS (not available) .
1156+295: pdf (not available) , or FITS (not available) .
ASASSN-14LI: pdf , or FITS .
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Uniformly weighted dirty map (not useful for bright sources) produced before self-cal of:
OQ208: pdf (not available) , or FITS (not available) .
OJ287: pdf (not available) , or FITS (not available) .
J1250+1621: pdf (not available) , or FITS (not available) .
1156+295: pdf (not available) , or FITS (not available) .
ASASSN-14LI: pdf , or FITS .
Comments.

Phase corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
OQ208 .
OJ287 .
J1250+1621 .
1156+295 .
ASASSN-14LI (not available) .
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Amplitude corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
OQ208: pdf , or text file , or statistical summary .
OJ287: pdf , or text file , or statistical summary .
J1250+1621: pdf , or text file , or statistical summary .
1156+295: pdf , or text file , or statistical summary .
ASASSN-14LI: pdf (not available) , or text file (not available) , or statistical summary (not available) .
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Telescope sensitivities (the total AMP gain applied during both a priori and self calibration; the square of this number gives the antenna noise (SEFD) in Jy).
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Residual closure phase (visibility closure phase with model closure phase subtracted) for:
OQ208 .
OJ287 .
J1250+1621 .
1156+295 .
ASASSN-14LI (not available) .
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Calibrated visibilities and the source model of:
OQ208 .
OJ287 .
J1250+1621 .
1156+295 .
ASASSN-14LI (not available) .
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Calibrated visibilities against u,v distance for:
OQ208: pdf , or png .
OJ287: pdf , or png .
J1250+1621: pdf , or png .
1156+295: pdf , or png .
ASASSN-14LI: pdf , or png .
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u,v coverage for:
OQ208: pdf , or png .
OJ287: pdf , or png .
J1250+1621: pdf , or png .
1156+295: pdf , or png .
ASASSN-14LI: pdf , or png .
Comments.

Crude maps of sources:
OQ208: pdf , or FITS .
OJ287: pdf , or FITS .
J1250+1621: pdf , or FITS .
1156+295: pdf , or FITS .
ASASSN-14LI: pdf , or FITS .
Comments.