EVN User Experiment Pipeline Feedback

Last updated: Mon Jun 19 14:45:56 CEST 2006 campbell@jive.nl

General Comments. ( Brief data summary and scan listing )
RO002 had 9 stations, 8 16MHz IFs, and two polarizations. There were 16 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, only J1743-0350 and J1745-0753 were fringed; RSOph was phase-referenced from J1743-0350. The SOLINT was set to the scan lengths for the phase-reference source J1745-0750.

The EVN reliability indicator (ERI) for this experiment was ERI = 0.803 . ERI* = 0.948 . The ERI was 0.803. The losses include Wb missing IF8, On missing IF5-6 RCP, Nt missing IF7-8 LCP, and Tr missing IF5-6 RCP (all taken as 7/8 of a station), Ur missing IF3-4 RCP and IF7-8 LCP (taken as 3/4 of a station). . Lack of Cm signal in IFs 1-2,5-8 considered as a known loss due to the limits of the micro-wave link, but it did miss about 1.25hr out of the 9. No penalty was assigned to splitting its available 16MHz bandwidth between two 16MHz IFs.

Plots of the autocorrelations
Comments.
370 pages, each scan plotted separately, all stations. The missing IF/pols are evident (each station has separate plots per polarization in each scan).

plots of the uncalibrated amplitude and phase against time
Comments.
64 pages, full-experiment for Ef-* & Mc-* baselines, no calibration applied. A 1min plot-averaging was used.

Plots of the uncalibrated amplitude and phase against frequency channel
Comments.
600 pages, scalar averaged Ef-* & Mc-* baselines, each scan plotted separately. No calibration applied yet.

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

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

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.
15 pages, gain amplitude from CL2 table.

Fringe-fit phase solutions (including Parallactic Angle correction).
Comments.
13 pages, CL3 station phase solutions -- CL3 = CL2+SN2, thus also includes the initial amplitude/parallactic angle calibration from CL2 and the fringe solutions from SN2. Ef is the reference station; it's plot shows the effect of the parallactic angle correction. Some stations show different phase-connection solutions in different IF/pols -- Wb ~04UT, Cm ~02-05UT, On, Tr.

Fringe-fit delay solutions
Comments.
13 pages, SN2 station delay solutions for the fringed sources, each IF/pol on a separate plot. Outliers in Wb IF1/R, Cm IF3.

Fringe-fit rate solutions
Comments.
13 pages, SN2 station rate solutions. Outlier in Tr IF5/R.

Telescope bandpasses
Comments.
2 pages, bandpass table 1. Only J1743-0350 was used for bandpass calibration.

Calibrated amplitude and phase against time (a priori amplitude calibration and fringe-fit solutions applied).
Comments.
59 pages, full-experiment for Ef-* & Mc-* baselines, calibrated with CL3. The 1-min plot-averaging still applied. More phases seen lined up ~0.

Calibrated amplitude and phase against frequency channel
Comments.
600 pages; Ef-* & Mc-* baselines calibrated with CL3 and BP1.

Naturally weighted dirty map (not useful for bright sources) produced before self-cal of:
RSOPH: pdf , or FITS .
J1743-0350: pdf (not available) , or FITS (not available) .
J1745-0753: pdf (not available) , or FITS (not available) .
Comments.
Natural-weighted (dirty) maps for RSOph.

Uniformly weighted dirty map (not useful for bright sources) produced before self-cal of:
RSOPH: pdf , or FITS .
J1743-0350: pdf (not available) , or FITS (not available) .
J1745-0753: pdf (not available) , or FITS (not available) .
Comments.
Uniform-weighted (dirty) map for RSOph.

Phase corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
RSOPH (not available) .
J1743-0350 .
J1745-0753 .
Comments.
Plots of post-SPLIT tables SN1 for the sources J1743-0350 & J1745-0753. About 13 pages per source. Individual outliers occur in various stations/IF/pols.

Amplitude corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
RSOPH: pdf (not available) , or text file (not available) , or statistical summary (not available) .
J1743-0350: pdf , or text file , or statistical summary .
J1745-0753: pdf , or text file , or statistical summary .
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. On & Tr seem a bit higher than the square-root of the SEFD listed in the EVN status table.

Residual closure phase (visibility closure phase with model closure phase subtracted) for:
RSOPH (not available) .
J1743-0350 .
J1745-0753 .
Comments.
Separate files per (fringed) source, showing closure phase plots for all the triangles (not just Ef-*-* or Mc-*-*). Only stokes=I shown. About 12 pages per source.

Calibrated visibilities and the source model of:
RSOPH (not available) .
J1743-0350 .
J1745-0753 .
Comments.
For each (fringed) source, plots of amp/phase on Ef-* & Mc-* baselines, calibrated with (post-SPLIT) table CL3, with a model-line overplotted. About 59 pages per source.

Calibrated visibilities against u,v distance for:
RSOPH: pdf , or png .
J1743-0350: pdf , or png .
J1745-0753: pdf , or png .
Comments.
For each source, a plot of amp vs. |uv| distance.

u,v coverage for:
RSOPH: pdf , or png .
J1743-0350: pdf , or png .
J1745-0753: pdf , or png .
Comments.
For each source, a plot of the u-v coverage.

Crude maps of sources:
RSOPH: pdf , or FITS .
J1743-0350: pdf , or FITS .
J1745-0753: pdf , or FITS .
Comments.
For each source, a CLEAN map resulting from the automated fringing/self-cal pipeline script.