EVN User Experiment Pipeline Feedback


Pipeline feedback for experiment EP053. If you have any comments on this experiment please email the address below.
A detailed description of the pipeline output is available.

Last updated: Tue Feb 14 17:00:06 CET 2006 reynolds@jive.nl

General Comments. ( Brief data summary and scan listing )
C band phase-referencing experiment, observed on 23 Oct 2005. Data rate was 256 Mbps (4 X 8 MHz, dual polarization, two-bit sampling). The target ARK120 was phase-referenced to J0513+0100. J0530+1331 was also observed for fringe-finding.
9 stations were scheduled, but Shanghai and Westerbork observed wrong versions of the schedule (a late change by the PI was not notified to the stations). The other stations had no serious problems.

The EVN reliability indicator (ERI) for this experiment was ERI = 1.0 . ERI* = 1.0 .

Plots of the autocorrelations .
Comments.

Plots of the uncalibrated amplitude and phase against time .
Comments.
Phase calibrator clearly detected on all baselines. Phase coherence is extremely good. Ur and Hh finish early (source below horizon).

Plots of the uncalibrated amplitude and phase against frequency channel .
Comments.
Sensitivity consistent in all subbands

The uncalibrated amplitude and phase of the crosshand correlations against frequency channel .
Comments.

TSYS against time .
Comments.

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, On: sensitivity a little lower than expected from EVN status table.

Fringe-fit phase solutions (including Parallactic Angle correction).
Comments.
Solutions good on all baselines. Coherence is very good.

Fringe-fit delay solutions .
Comments.

Fringe-fit rate solutions .
Comments.

Telescope bandpasses .
Comments.

Calibrated amplitude and phase against time (a priori amplitude calibration and fringe-fit solutions applied).
Comments.
Fringe-fitting appears to have worked well at all stations.

Calibrated amplitude and phase against frequency channel .
Comments.

Naturally weighted dirty map (not useful for bright sources) produced before self-cal of:
J0530+1331: postscript , or FITS .
ARK120: postscript , or FITS .
J0513+0100: postscript , or FITS .
Comments.
Dirty maps not useful for the bright sources.

Uniformly weighted dirty map (not useful for bright sources) produced before self-cal of:
J0530+1331: postscript , or FITS .
ARK120: postscript , or FITS .
J0513+0100: postscript , or FITS .
Comments.

Phase corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
J0530+1331.
ARK120. (not available)
J0513+0100.
Comments.

Amplitude corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
J0530+1331: postscript , or text file , or statistical summary .
ARK120: postscript (not available) , or text file (not available) , or statistical summary (not available) .
J0513+0100: postscript , 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.
Jb: amplitude corrections very large and variable.
On: the lower than expected sensitivity appears to be real (a priori calibration is accurate)
Ur: amplitude corrections are quite large (possibly related to low elevation of the observations).

Residual closure phase (visibility closure phase with model closure phase subtracted) for:
J0530+1331 .
ARK120 (not available) .
J0513+0100 .
Comments.

Calibrated visibilities and the source model of:
J0530+1331 .
ARK120 (not available) .
J0513+0100 .
Comments.
Fit to data of J0513+0100 is quite good. Some further data editing is required.

Calibrated visibilities against u,v distance for:
J0530+1331. postscript , or png (smaller)
ARK120. postscript , or png (smaller)
J0513+0100. postscript , or png (smaller)
Comments.

u,v coverage for:
J0530+1331. postscript , or png (smaller)
ARK120. postscript , or png (smaller)
J0513+0100. postscript , or png (smaller)
Comments.

Crude maps of sources:
J0530+1331: postscript , or FITS .
ARK120: postscript , or FITS .
J0513+0100: postscript , or FITS .
Comments.
Several artefacts in image of J0513+0100. Further editing required.