EVN User Experiment Pipeline Feedback


Pipeline feedback for experiment EF018C. 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 Jul 9 17:08:49 CEST 2007 campbell@jive.nl

General Comments. ( Brief data summary and scan listing )
EF018C had 10 stations, 8 8MHz IFs, and two polarizations. There were 32 frequency points per IF/pol, and integration times were 1s. Considerably more information is included in the experiment's cover letter on the standard-plots portion of the EVN Archive. In the pipelining, LS5039 was not fringed individually, since it was a target in a phase-referencing pair. The SOLINT was 3 minutes (representative length of a reference-source scan in a phase-ref cycle). Because there were no apparent fringes to Ef, Mc was used as the primary reference station and the plotting-reference station, with Wb the secondary reference station.

The EVN reliability indicator (ERI) for this experiment was ERI = 0.755 . ERI* = 0.755 . The ERI was 0.755. The losses include Ef in the whole experiment, IF7,8/LCP for Nt (BBC#8) in the whole experiment, and about half-an-hour at Jb due to the recording problems in the second disk-pack (of three).

Plots of the autocorrelations
Comments.
Each scan plotted separately, all stations. (100 pages)

plots of the uncalibrated amplitude and phase against time
Comments.
Full-experiment for Mc-* baselines, no calibration applied. A 1 minute plot-averaging was used. (46 pages)

Plots of the uncalibrated amplitude and phase against frequency channel
Comments.
Scalar averaged Mc-* baselines, each scan plotted separately. No calibration applied yet. (92 pages)

The uncalibrated amplitude and phase of the crosshand correlations against frequency channel (not available)
Comments.

TSYS against time
Comments.
TY1 table, each IF/pol on a separate plot. (16 pages)

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.
Gain amplitude from CL2 table. (16 pages)

Fringe-fit phase solutions (including Parallactic Angle correction).
Comments.
CL3 station phase solutions -- CL3 = CL2+SN2, thus also includes the initial amplitude/parallactic angle calibration from CL2 and the fringe solutions from SN2. Jb has stretches early suggestive of a high rate, Wb to a much lesser degree. (15 pages)

Fringe-fit delay solutions
Comments.
SN2 station delay solutions for the fringed sources, each IF/pol on a separate plot. For this experiment, one lag corresponds to 1/16 microsecond of delay. Not many solutions to the distant stations, and none to Ef. (15 pages)

Fringe-fit rate solutions
Comments.
SN2 station rate solutions. Outlier in Jb at about 0340. (15 pages)

Telescope bandpasses
Comments.
Bandpass table 1. 3C345 was used for bandpass calibration. (2 pages)

Calibrated amplitude and phase against time (a priori amplitude calibration and fringe-fit solutions applied).
Comments.
Full-experiment for Mc-* baselines, calibrated with CL3. The 1-min plot-averaging still applied. (32 pages)

Calibrated amplitude and phase against frequency channel
Comments.
Mc-* baselines calibrated with CL3 and BP1. The amp and phase plots self-scale, not necessarily going down to 0 in the case of the amps. (80 pages)

Naturally weighted dirty map (not useful for bright sources) produced before self-cal of:
J1743-0350: pdf (not available) , or FITS (not available) .
3C345: pdf (not available) , or FITS (not available) .
J1825-1718: pdf (not available) , or FITS (not available) .
LS5039: pdf , or FITS .
Comments.
Natural-weighted dirty map of the phase-reference target.

Uniformly weighted dirty map (not useful for bright sources) produced before self-cal of:
J1743-0350: pdf (not available) , or FITS (not available) .
3C345: pdf (not available) , or FITS (not available) .
J1825-1718: pdf (not available) , or FITS (not available) .
LS5039: pdf , or FITS .
Comments.
Uniform-weighted dirty map of the phase-reference target.

Phase corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
J1743-0350 .
3C345 .
J1825-1718 .
LS5039 (not available) .
Comments.
Plots of post-SPLIT tables SN1 for the sources that have been individually fringed.

Amplitude corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
J1743-0350: pdf , or text file , or statistical summary .
3C345: pdf , or text file , or statistical summary .
J1825-1718: pdf , or text file , or statistical summary .
LS5039: pdf (not available) , or text file (not available) , or statistical summary (not available) .
Comments.
As above, but for the post-SPLIT table SN2.

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.
CL4 gain-amp. (15 pages)

Residual closure phase (visibility closure phase with model closure phase subtracted) for:
J1743-0350 .
3C345 .
J1825-1718 .
LS5039 (not available) .
Comments.
Separate files per (fringed) source, showing closure phase plots for all the triangles (not just Mc-*-*). Only stokes=I shown.

Calibrated visibilities and the source model of:
J1743-0350 .
3C345 .
J1825-1718 .
LS5039 (not available) .
Comments.
For each (fringed) source, plots of amp/phase on Mc-* baselines, calibrated with (post-SPLIT) table CL3, with a model-line overplotted.

Calibrated visibilities against u,v distance for:
J1743-0350: pdf , or png .
3C345: pdf , or png .
J1825-1718: pdf , or png .
LS5039: pdf , or png .
Comments.
For each source, a plot of amp vs. |uv| distance.

u,v coverage for:
J1743-0350: pdf , or png .
3C345: pdf , or png .
J1825-1718: pdf , or png .
LS5039: pdf , or png .
Comments.
For each source, a plot of the u-v coverage.

Crude maps of sources:
J1743-0350: pdf , or FITS .
3C345: pdf , or FITS .
J1825-1718: pdf , or FITS .
LS5039: pdf , or FITS .
Comments.
For each source, a CLEAN map resulting from the automated fringing and self-cal iterations (or phase-referencing) in the pipeline script.