EVN User Experiment Pipeline Feedback


Pipeline feedback for experiment EA035B_2. 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 May 22 12:29:50 CEST 2006 campbell@jive.nl

General Comments. ( Brief data summary and scan listing )
EA035B had 8 stations, 2 0.5MHz IFs, and four polarizations. There were 512 frequency points per IF/pol, and integration times were 4s. The two IFs were correlated in separate passes, which produced separate FITS files. This pipelining (ea035b_2*) corresponds to the IF at DC-edge 1667.15. Considerably more information is included in the experiment's cover letter on the standard-plots portion of the EVN Archive. In the pipelining, all sources were fringed (no phase-referencing), but there were very few fringe solutions for the target maser source (pipeline currently does not include any special spectral-line source considerations). The SOLINT was 2.75 minutes (one-quarter of the typical 11-minute scan length).

The EVN reliability indicator (ERI) for this experiment was ERI = 0.958 . ERI* = 0.958 . The ERI was 0.958. The losses include Jb missing about 1.5hr because of a Mk5 recording problem, plus Mc having no apparent fringes in two scans.

Plots of the autocorrelations
Comments.
111 pages, each scan plotted separately, all stations (~2p/scan).

plots of the uncalibrated amplitude and phase against time
Comments.
4 pages, full-experiment for Ef-* baselines, no calibration applied. A 2.75 minute plot-averaging was used.

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

The uncalibrated amplitude and phase of the crosshand correlations against frequency channel
Comments.
56 pages, scalar averaged Ef-* baselines for the polarization product LR (1p/scan).

TSYS against time
Comments.
2 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.
2 pages, gain amplitude from CL2 table.

Fringe-fit phase solutions (including Parallactic Angle correction).
Comments.
2 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.

Fringe-fit delay solutions
Comments.
2 pages, SN2 station delay solutions for the fringed sources, each IF/pol on a separate plot. For this experiment, one lag corresponds to 1 microsecond of delay.

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

Telescope bandpasses
Comments.
2 pages, bandpass table 1. Sources 3C273, 3C286, 3C345, and 3C454.3 were used for bandpass calibration.

Calibrated amplitude and phase against time (a priori amplitude calibration and fringe-fit solutions applied).
Comments.
4 pages, full-experiment for Ef-* baselines, calibrated with CL3. The 2.75-min plot-averaging still applied. Following the fringing, essentially only the calibrator sources remain.

Calibrated amplitude and phase against frequency channel
Comments.
30 pages; Ef-* baselines calibrated with CL3 and BP1. The amp and phase plots sef-scale, not necessarily going down to 0 in the case of the amps.

Naturally weighted dirty map (not useful for bright sources) produced before self-cal of:
3C286: pdf (not available) , or FITS (not available) .
3C273: pdf (not available) , or FITS (not available) .
3C345: pdf (not available) , or FITS (not available) .
3C454.3: pdf (not available) , or FITS (not available) .
OQ208: pdf (not available) , or FITS (not available) .
Comments.

Uniformly weighted dirty map (not useful for bright sources) produced before self-cal of:
3C286: pdf (not available) , or FITS (not available) .
3C273: pdf (not available) , or FITS (not available) .
3C345: pdf (not available) , or FITS (not available) .
3C454.3: pdf (not available) , or FITS (not available) .
OQ208: pdf (not available) , or FITS (not available) .
Comments.

Phase corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
3C286 .
3C273 .
3C345 .
3C454.3 .
OQ208 .
Comments.
Plots of post-SPLIT tables SN1 for the sources 3C286, 3C273, 3C345, 3C454.3, and OQ208. 2 pages per source.

Amplitude corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
3C286: pdf , or text file , or statistical summary .
3C273: pdf , or text file , or statistical summary .
3C345: pdf , or text file , or statistical summary .
3C454.3: pdf , or text file , or statistical summary .
OQ208: 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.

Residual closure phase (visibility closure phase with model closure phase subtracted) for:
3C286 .
3C273 .
3C345 .
3C454.3 .
OQ208 .
Comments.
Separate files per (fringed) source, showing closure phase plots for all the triangles (not just Ef-*-*). Only stokes=I shown. 12 pages per source.

Calibrated visibilities and the source model of:
3C286 .
3C273 .
3C345 .
3C454.3 .
OQ208 .
Comments.
For each (fringed) source, plots of amp/phase on Ef-* baselines, calibrated with (post-SPLIT) table CL3, with a model-line overplotted. 4 pages per source.

Calibrated visibilities against u,v distance for:
3C286: pdf , or png .
3C273: pdf , or png .
3C345: pdf , or png .
3C454.3: pdf , or png .
OQ208: pdf , or png .
Comments.
For each (fringed) source, a plot of amp vs. |uv| distance.

u,v coverage for:
3C286: pdf , or png .
3C273: pdf , or png .
3C345: pdf , or png .
3C454.3: pdf , or png .
OQ208: pdf , or png .
Comments.
For each (fringed) source, a plot of the u-v coverage.

Crude maps of sources:
3C286: pdf , or FITS .
3C273: pdf , or FITS .
3C345: pdf , or FITS .
3C454.3: pdf , or FITS .
OQ208: pdf , or FITS .
Comments.
For each (fringed) source, a CLEAN map resulting from the automated fringing and self-cal iterations in the pipeline script.