EVN User Experiment Pipeline Feedback


Pipeline feedback for experiment EV018C. If you have any comments on this experiment please email the address below.
A detailed description of the pipeline output is available.

Last updated: Wed Aug 10 16:40:26 CEST 2011 campbell@jive.nl

General Comments. ( Brief data summary and scan listing )
EV018C had 13 stations, 8 16MHz IFs, and two polarizations, with 32 frequency points per IF and 1s integrations. Considerably more information is included in the experiment's cover letter on the standard-plots portion of the EVN Archive. In the pipelining, the target sources were treated as phase-referenced sources and not directly fringed. The phase-referencing was construed to include pair of the target and its more-frequently observed reference source (the pipeline doesn't handle 3-source schemes automatically). The SOLINT was set automatically at a representative length of a reference-source scan in a phase-reference cycle. Ef, then Wb, were used as the reference stations.

The EVN reliability indicator (ERI) for this experiment was ERI = 0.851 . ERI* = 0.928 . The losses include Tr missing about an hour dur to pack-changing proglems, Zc missing LCP fringes in 2 IFs (not affected by known RFI), Sv having low/no fringes in RCP in IFs 1-4, and (the following not counted against ERI*) Jb, Jv missing 3.25 hrs because of high winds. Known station limitations including the Sv upper-end cut-off at 5000 MHz and Zc internal upconverter RFI in IF4 are not counted against either.

Plots of the autocorrelations
Comments.
Each scan plotted separately, all stations.

plots of the uncalibrated amplitude and phase against time
Comments.
Full-experiment for Ef-* baselines, no calibration applied. A 1.5 minute plot-averaging was used.

Plots of the uncalibrated amplitude and phase against frequency channel
Comments.
Scalar averaged Ef-* 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.
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.
Gain amplitude from CL2 table.

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.

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 1/32 microsecond of delay. Some outliers in Jv; On IF3/R; Mc 3L,4R,5,8; Zc towrads the end; Bd just after 0800; Ur 5R,7R.

Fringe-fit rate solutions
Comments.
SN2 station rate solutions. Some outliers Jv; On IF2/L,3,5/L; Ys 1R,3R,5L,6R,8R; Bd 5R; Ur 5R. Mc has residual rates ~1mHz; Zc and Bd ~2mHz (Bd approaching 0 for 3rd target/reference pair).

Telescope bandpasses
Comments.
Bandpass table 1. J1800+3848 & 3C454.3 were used for bandpass calibration.

Calibrated amplitude and phase against time (a priori amplitude calibration and fringe-fit solutions applied).
Comments.
Full-experiment for Ef-* baselines, calibrated with CL3. The 1.5-min plot-averaging still applied.

Calibrated amplitude and phase against frequency channel
Comments.
Ef-* 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.

Naturally weighted dirty map (not useful for bright sources) produced before self-cal of:
B2020+28: pdf , or FITS .
J1934+1043: pdf (not available) , or FITS (not available) .
J2023+3153: pdf (not available) , or FITS (not available) .
B2021+51: pdf , or FITS .
J2025+5028: pdf (not available) , or FITS (not available) .
J2023+5427: pdf (not available) , or FITS (not available) .
J1800+3848: pdf (not available) , or FITS (not available) .
J2020+2826: pdf (not available) , or FITS (not available) .
J1928+0848: pdf (not available) , or FITS (not available) .
B1929+10: pdf , or FITS .
3C454.3: pdf (not available) , or FITS (not available) .
Comments.
Naturually weighted dirty map of the targets.

Uniformly weighted dirty map (not useful for bright sources) produced before self-cal of:
B2020+28: pdf , or FITS .
J1934+1043: pdf (not available) , or FITS (not available) .
J2023+3153: pdf (not available) , or FITS (not available) .
B2021+51: pdf , or FITS .
J2025+5028: pdf (not available) , or FITS (not available) .
J2023+5427: pdf (not available) , or FITS (not available) .
J1800+3848: pdf (not available) , or FITS (not available) .
J2020+2826: pdf (not available) , or FITS (not available) .
J1928+0848: pdf (not available) , or FITS (not available) .
B1929+10: pdf , or FITS .
3C454.3: pdf (not available) , or FITS (not available) .
Comments.
Uniformly weighted dirty map of the targets.

Phase corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
B2020+28 (not available) .
J1934+1043 .
J2023+3153 .
B2021+51 (not available) .
J2025+5028 .
J2023+5427 .
J1800+3848 .
J2020+2826 .
J1928+0848 .
B1929+10 (not available) .
3C454.3 .
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.
B2020+28: pdf (not available) , or text file (not available) , or statistical summary (not available) .
J1934+1043: pdf , or text file , or statistical summary .
J2023+3153: pdf , or text file , or statistical summary .
B2021+51: pdf (not available) , or text file (not available) , or statistical summary (not available) .
J2025+5028: pdf , or text file , or statistical summary .
J2023+5427: pdf , or text file , or statistical summary .
J1800+3848: pdf , or text file , or statistical summary .
J2020+2826: pdf , or text file , or statistical summary .
J1928+0848: pdf , or text file , or statistical summary .
B1929+10: pdf (not available) , or text file (not available) , or statistical summary (not available) .
3C454.3: 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. Jv LCP channels much worse than RCP ones (consistent with "cross" standard plots).

Residual closure phase (visibility closure phase with model closure phase subtracted) for:
B2020+28 (not available) .
J1934+1043 .
J2023+3153 .
B2021+51 (not available) .
J2025+5028 .
J2023+5427 .
J1800+3848 .
J2020+2826 .
J1928+0848 .
B1929+10 (not available) .
3C454.3 .
Comments.
Separate files per (fringed) source, showing closure phase plots for all the triangles (not just Ef-*-*). Only stokes=I shown.

Calibrated visibilities and the source model of:
B2020+28 (not available) .
J1934+1043 .
J2023+3153 .
B2021+51 (not available) .
J2025+5028 .
J2023+5427 .
J1800+3848 .
J2020+2826 .
J1928+0848 .
B1929+10 (not available) .
3C454.3 .
Comments.
For each (fringed) source, plots of amp/phase on Ef-* baselines, calibrated with (post-SPLIT) table CL3, with a model-line overplotted.

Calibrated visibilities against u,v distance for:
B2020+28: pdf , or png .
J1934+1043: pdf , or png .
J2023+3153: pdf , or png .
B2021+51: pdf , or png .
J2025+5028: pdf , or png .
J2023+5427: pdf , or png .
J1800+3848: pdf , or png .
J2020+2826: pdf , or png .
J1928+0848: pdf , or png .
B1929+10: pdf , or png .
3C454.3: pdf , or png .
Comments.
For each source, a plot of amp vs. |uv| distance.

u,v coverage for:
B2020+28: pdf , or png .
J1934+1043: pdf , or png .
J2023+3153: pdf , or png .
B2021+51: pdf , or png .
J2025+5028: pdf , or png .
J2023+5427: pdf , or png .
J1800+3848: pdf , or png .
J2020+2826: pdf , or png .
J1928+0848: pdf , or png .
B1929+10: pdf , or png .
3C454.3: pdf , or png .
Comments.
For each source, a plot of the u-v coverage.

Crude maps of sources:
B2020+28: pdf , or FITS .
J1934+1043: pdf , or FITS .
J2023+3153: pdf , or FITS .
B2021+51: pdf , or FITS .
J2025+5028: pdf , or FITS .
J2023+5427: pdf , or FITS .
J1800+3848: pdf , or FITS .
J2020+2826: pdf , or FITS .
J1928+0848: pdf , or FITS .
B1929+10: pdf , or FITS .
3C454.3: 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.