EVN User Experiment Pipeline Feedback


Pipeline feedback for experiment EP064D. 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 Apr 29 17:25:13 CEST 2009 campbell@jive.nl


General Comments. ( Brief data summary and scan listing )
EP064D had 11 stations (including Knockin as an extra MERLIN station included in the EVN correlation), 8 16 MHz IFs, two polarizations, and used 32 frequency points per IF/pol, with 2s 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 source was treated as a phase-referenced source and not directly fringed. The SOLINT was set automatically at a representative length of a reference-source scan in a phase-reference cycle (90s). Ef was used as the reference station. Bad RFI places were flagged using a specific channel-flagging file, that excised the upper half of IF2 for everyone, and IF7-8 for Mc (as well as IF1-2, IF5-8, the lower-half of IF3, and the upper half of IF4 for Cm & Kn).

The EVN reliability indicator (ERI) for this experiment was ERI = 0.660 . ERI* = 0.709 . The ERI was 0.660, with losses including Ur (unsuccessful recording in this L-band Gbps experiment), 1h45m at Cm and Kn, the loss of IF1/RCP at Nt, and the loss of IF5-6/L for (a different, overlapping) 1h45 at Tr. The ERI, but not the ERI* also counts losses due to the bad RFI for everyone in the upper half of IF2 and the two upper IFs for Mc.


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 1.8 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. As usual, Cm & Kn have 'dummy' Tsys values.


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. Outliers in Tr 5-6/L (time during low-amps), Nt 1/L.


Fringe-fit rate solutions
Comments.
SN2 station rate solutions. Outliers in Tr 5-6/L; Mc 2/R, 5-6; Nt 7L, 8R.


Telescope bandpasses
Comments.
Bandpass table 1. J2321+3204 & 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 1.8-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:
J2333+3901: pdf (not available) , or FITS (not available) .
J2321+3204: pdf (not available) , or FITS (not available) .
3C454.3: pdf (not available) , or FITS (not available) .
IRAS2336: pdf , or FITS .
2134+004: pdf (not available) , or FITS (not available) .
Comments.
Naturually weighted dirty map of the target.


Uniformly weighted dirty map (not useful for bright sources) produced before self-cal of:
J2333+3901: pdf (not available) , or FITS (not available) .
J2321+3204: pdf (not available) , or FITS (not available) .
3C454.3: pdf (not available) , or FITS (not available) .
IRAS2336: pdf , or FITS .
2134+004: pdf (not available) , or FITS (not available) .
Comments.
Uniformly weighted dirty map of the target.


Phase corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
J2333+3901 .
J2321+3204 .
3C454.3 .
IRAS2336 (not available) .
2134+004 .
Comments.
Plots of post-SPLIT tables SN1 for the sources.


Amplitude corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
J2333+3901: pdf , or text file , or statistical summary .
J2321+3204: pdf , or text file , or statistical summary .
3C454.3: pdf , or text file , or statistical summary .
IRAS2336: pdf (not available) , or text file (not available) , or statistical summary (not available) .
2134+004: 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:
J2333+3901 .
J2321+3204 .
3C454.3 .
IRAS2336 (not available) .
2134+004 .
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:
J2333+3901 .
J2321+3204 .
3C454.3 .
IRAS2336 (not available) .
2134+004 .
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:
J2333+3901: pdf , or png .
J2321+3204: pdf , or png .
3C454.3: pdf , or png .
IRAS2336: pdf , or png .
2134+004: pdf , or png .
Comments.
For each source, a plot of amp vs. |uv| distance.


u,v coverage for:
J2333+3901: pdf , or png .
J2321+3204: pdf , or png .
3C454.3: pdf , or png .
IRAS2336: pdf , or png .
2134+004: pdf , or png .
Comments.
For each source, a plot of the u-v coverage.


Crude maps of sources:
J2333+3901: pdf , or FITS .
J2321+3204: pdf , or FITS .
3C454.3: pdf , or FITS .
IRAS2336: pdf , or FITS .
2134+004: 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.