EVN User Experiment Pipeline Feedback


Pipeline feedback for experiment N07L1_1. 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 Jun 25 12:14:00 CEST 2007 bignall@jive.nl

General Comments. ( Brief data summary and scan listing )
L band Network Monitoring Experiment, observed on 8 Mar 2007. Data rate was 256 Mbps (4 X 8 MHz subbands, dual polarization, two-bit sampling).
The pipeline was run twice, swapping the target and phase-reference sources to compare results. In both cases the results of self-calibration seem to be OK but phase referencing worked very poorly. It seems likely this could be a result of unstable phases due to the targets being observed only 13.6 and 16.6 degrees from the Sun. For this pass, the target source 'J2330+1100' was calibrated using the phase-reference source 'J2334+0736'. '3C454.3', '2134+004' and '3C84' were also observed as calibrators/fringe finders.
11 stations participated. Jb had a recording problem due to a power supply causing problems with Mark 5 unit. Most Jb data were lost. Mc started late. On phase jumps by 180 degrees between some scans.

The EVN reliability indicator (ERI) for this experiment was ERI = 0.79 . ERI* = 0.79 . (EF=1, WB=1, JB=0.1, ON=1, MC=0.75, NT=1, TR=1, UR=1, HH=1, CM=1, SH=1)

Plots of the autocorrelations
Comments.

plots of the uncalibrated amplitude and phase against time
Comments.
The uncalibrated visibilities including Jb are OK for the two short periods during the experiment when the recording was working.

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
Comments.
Most Jb Tsys measurements seem to be invalid, even when good data were being recorded.

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).
Comments.
Jb values look like garbage.

Fringe-fit phase solutions (including Parallactic Angle correction).
Comments.

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).
Comments.

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:
J2330+1100: pdf , or FITS .
3C84: pdf (not available) , or FITS (not available) .
3C454.3: pdf (not available) , or FITS (not available) .
J2334+0736: pdf (not available) , or FITS (not available) .
2134+004: pdf (not available) , or FITS (not available) .
Comments.

Uniformly weighted dirty map (not useful for bright sources) produced before self-cal of:
J2330+1100: pdf , or FITS .
3C84: pdf (not available) , or FITS (not available) .
3C454.3: pdf (not available) , or FITS (not available) .
J2334+0736: pdf (not available) , or FITS (not available) .
2134+004: pdf (not available) , or FITS (not available) .
Comments.

Phase corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
J2330+1100 (not available) .
3C84 .
3C454.3 .
J2334+0736 .
2134+004 .
Comments.

Amplitude corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
J2330+1100: pdf (not available) , or text file (not available) , or statistical summary (not available) .
3C84: pdf , or text file , or statistical summary .
3C454.3: pdf , or text file , or statistical summary .
J2334+0736: pdf , or text file , or statistical summary .
2134+004: pdf , or text file , or statistical summary .
Comments.

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).
Comments.

Residual closure phase (visibility closure phase with model closure phase subtracted) for:
J2330+1100 (not available) .
3C84 .
3C454.3 .
J2334+0736 .
2134+004 .
Comments.

Calibrated visibilities and the source model of:
J2330+1100 (not available) .
3C84 .
3C454.3 .
J2334+0736 .
2134+004 .
Comments.

Calibrated visibilities against u,v distance for:
J2330+1100: pdf , or png .
3C84: pdf , or png .
3C454.3: pdf , or png .
J2334+0736: pdf , or png .
2134+004: pdf , or png .
Comments.

u,v coverage for:
J2330+1100: pdf , or png .
3C84: pdf , or png .
3C454.3: pdf , or png .
J2334+0736: pdf , or png .
2134+004: pdf , or png .
Comments.

Crude maps of sources:
J2330+1100: pdf , or FITS .
3C84: pdf , or FITS .
3C454.3: pdf , or FITS .
J2334+0736: pdf , or FITS .
2134+004: pdf , or FITS .
Comments.