EVN User Experiment Pipeline Feedback


Pipeline feedback for experiment GB055B. 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 21 14:54:25 CET 2006 campbell@jive.nl

General Comments. ( Brief data summary and scan listing )
GB055B had 15 stations, 4 8MHz IFs, and two polarizations. There were 16 frequency points per IF/pol, and integration times were 2s. Considerably more information is included in the experiment's cover letter on the standard-plots portion of the EVN Archive. In the pipelining, only J1337+550, 3C345, and OQ208 were fringed; MKN273 was phase-referenced from J1337+550. The SOLINT was 3.5min (scan lengths for J1337+550).

The EVN reliability indicator (ERI) for this experiment was ERI = 0.583 . ERI* = 0.583 . The ERI was 0.583. This was computed purely from the 6 EVN stations' performance. The losses include Tr missing the entire experiment because of lack of disk capacity and Jb suffering an azimuth-drive casualty for ~5hr (out of the 16-hr EVN participation).

Plots of the autocorrelations .
Comments.
684 pages, each scan plotted separately, all stations. No Ef RR in scan one (LCP recorded into both pols in just this single scan). Page count boosted considerably by the 10 plots per scan for the EVN-only portion of the experiment overflowing by one the 9 plots per page layout.

Plots of the uncalibrated amplitude and phase against time .
Comments.
56 pages, full-experiment for Ef-* & Pt-* baselines, no calibration applied. Each 2s integration plotted separately (making the filesize of the plot rather large). The EVN-only scan of 3C345 dominates the amplitude scale.

Plots of the uncalibrated amplitude and phase against frequency channel .
Comments.
791 pages, scalar averaged Ef-* & Pt-* 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.
12 pages, TY1 table, each IF/pol on a separate plot. The gap in Wb Tsys data following the first scan of 3C345 (the first high point) leads to a constant-slope decrease in gain over the gap, as seen in the GAIN plot, as well as the CALIB_AMP2 plot later.

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.
12 pages, gain amplitude from CL2 table. Constant-slope decrease in Wb from the first 3C345 during a gap in Tsys data, as mentioned above.

Fringe-fit phase solutions (including Parallactic Angle correction).
Comments.
12 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 as long as the EVN participates; it's plot shows the effect of the parallactic angle correction.

Fringe-fit delay solutions .
Comments.
12 pages, SN2 station delay solutions for the fringed calibrators, each IF/pol on a separate plot. Pt becomes reference station after EVNs stop participating (still with a constant rate of under 1mHz).

Fringe-fit rate solutions .
Comments.
12 pages, SN2 station rate solutions.

Telescope bandpasses .
Comments.
4 pages, bandpass table 1. Only OQ208 was used for bandpass calibration.

Calibrated amplitude and phase against time (a priori amplitude calibration and fringe-fit solutions applied).
Comments.
56 pages, full-experiment for Ef-* & Pt-* baselines, calibrated with CL3. Each 2s integration plotted separately. The EVN-only scan of 3C345 still dominates the amplitude scale. More phases seen lined up ~0.

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

Naturally weighted dirty map (not useful for bright sources) produced before self-cal of:
3C345:postscript (not available) , or FITS (not available) .
OQ208:postscript (not available) , or FITS (not available) .
MKN273: postscript , or FITS .
J1337+550:postscript (not available) , or FITS (not available) .
Comments.
Natural-weighted (dirty) maps for Mkn273.

Uniformly weighted dirty map (not useful for bright sources) produced before self-cal of:
3C345:postscript (not available) , or FITS (not available) .
OQ208:postscript (not available) , or FITS (not available) .
MKN273: postscript , or FITS .
J1337+550:postscript (not available) , or FITS (not available) .
Comments.
Uniform-weighted (dirty) map for Mkn273.

Phase corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
3C345.
OQ208.
MKN273. (not available)
J1337+550.
Comments.
Plots of post-SPLIT tables SN1 for the sources 3C345, OQ208, J1337+550. 12 pages per source; 3C345 & OQ208 have no more than 2 scans for any given station.

Amplitude corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
3C345: postscript , or text file , or statistical summary .
OQ208: postscript , or text file , or statistical summary .
MKN273: postscript (not available) , or text file (not available) , or statistical summary (not available) .
J1337+550: postscript , or text file , or statistical summary .
Comments.
As above, but for the post-SPLIT table SN2. ~Constant-slope behavior in amp after the first 3C345 scan, during the gap in Tsys data, as mentioned above in the TSYS plot.

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. The period in Wb after the first scan of 3C345 has been taken care of by the calibration.

Residual closure phase (visibility closure phase with model closure phase subtracted) for:
3C345 .
OQ208 .
MKN273 (not available) .
J1337+550 .
Comments.
Separate files per (fringed) source, showing closure phase plots for all the triangles (not just Ef-*-* or Pt-*-*)

Calibrated visibilities and the source model of:
3C345 .
OQ208 .
MKN273 (not available) .
J1337+550 .
Comments.
For each (fringed) source, plots of amp/phase on Ef-* & Pt-* baselines, calibrated with (post-SPLIT) table CL3, with a model-line overplotted.

Calibrated visibilities against u,v distance for:
3C345. postscript , or png (smaller)
OQ208. postscript , or png (smaller)
MKN273. postscript , or png (smaller)
J1337+550. postscript , or png (smaller)
Comments.
For each source, a plot of amp vs. |uv| distance.

u,v coverage for:
3C345. postscript , or png (smaller)
OQ208. postscript , or png (smaller)
MKN273. postscript , or png (smaller)
J1337+550. postscript , or png (smaller)
Comments.
For each source, a plot of the u-v coverage.

Crude maps of sources:
3C345: postscript , or FITS .
OQ208: postscript , or FITS .
MKN273: postscript , or FITS .
J1337+550: postscript , or FITS .
Comments.
For each source, a CLEAN map resulting from the automated fringing/self-cal pipeline script. Fringe-finder maps based on a very limited number of scans.