EVN User Experiment Pipeline Feedback


Pipeline feedback for experiment EI012C. If you have any comments on this experiment please email the address below.
A detailed description of the pipeline output is available.

Last updated: Fri Aug 21 18:18:49 CEST 2015 mao@jive.eu

General Comments. ( Brief data summary and scan listing )
L band phase-referencing experiment, observed on 26 Feb 2015. Data rate was 1 Gbps (8 X 16 MHz subbands, dual polarization, two-bit sampling). The target source HBOOTES2 was calibrated using the phase-reference source J1426+3625. J1159+2914, 3C286, Q208 were the fringe finders.
14 stations scheduled, however only 11 stations recorded data.

The EVN reliability indicator (ERI) for this experiment was ERI = 0.50 . ERI* = 0.65 . The ERI* value takes into account that:
- Noto did not observe at all due to their L-band receiver not working
- Sardinia did not observe at all due to formatter errors
- Medicina lost ~45 minutes due to field system errors
- Torun lost ~120 minutes for unknown reasons
- Urumqi IF5L took no useful data.

The ERI value also takes into account the following losses that are outside the station's control:
- Onsala did not observe at all due to high winds
- Medicina IFs 1, 2, 8 are RFI-ridden

Plots of the autocorrelations
Comments.
Each scan plotted separately, all stations. RFI is visible, particularly in IFs 1 and 8.

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.
No cross-pols for this experiment

TSYS against time
Comments.
TY1 table, each IF/pol on a separate plot. JB, SV, ZC, and BD receive "default" antab 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.

Fringe-fit rate solutions
Comments.
SN2 station rate solutions.

Telescope bandpasses
Comments.
Bandpass table 1. OQ208 and J1159+2914 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. A 1.5 minute plot-averaging was used.

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:
J1159+2914: pdf (not available) , or FITS (not available) .
HBOOTES2: pdf , or FITS .
3C286: pdf (not available) , or FITS (not available) .
OQ208: pdf (not available) , or FITS (not available) .
J1426+3625: pdf (not available) , or FITS (not available) .
Comments.
Naturally weighted dirty maps of phase-referenced sources.

Uniformly weighted dirty map (not useful for bright sources) produced before self-cal of:
J1159+2914: pdf (not available) , or FITS (not available) .
HBOOTES2: pdf , or FITS .
3C286: pdf (not available) , or FITS (not available) .
OQ208: pdf (not available) , or FITS (not available) .
J1426+3625: pdf (not available) , or FITS (not available) .
Comments.
Uniformly weighted dirty maps of phase-referenced sources.

Phase corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
J1159+2914 .
HBOOTES2 (not available) .
3C286 .
OQ208 .
J1426+3625 .
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.
J1159+2914: pdf , or text file , or statistical summary .
HBOOTES2: pdf (not available) , or text file (not available) , or statistical summary (not available) .
3C286: pdf , or text file , or statistical summary .
OQ208: pdf , or text file , or statistical summary .
J1426+3625: 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:
J1159+2914 .
HBOOTES2 (not available) .
3C286 .
OQ208 .
J1426+3625 .
Comments.
Separate files per (fringed) source, showing closure phase plots for all the triangles. Only stokes=I shown.

Calibrated visibilities and the source model of:
J1159+2914 .
HBOOTES2 (not available) .
3C286 .
OQ208 .
J1426+3625 .
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:
J1159+2914: pdf , or png .
HBOOTES2: pdf , or png .
3C286: pdf , or png .
OQ208: pdf , or png .
J1426+3625: pdf , or png .
Comments.
For each source, a plot of amp vs. |uv| distance. The plot for HBOOTES looks odd...

u,v coverage for:
J1159+2914: pdf , or png .
HBOOTES2: pdf , or png .
3C286: pdf , or png .
OQ208: pdf , or png .
J1426+3625: pdf , or png .
Comments.
For each source, a plot of the u-v coverage.

Crude maps of sources:
J1159+2914: pdf , or FITS .
HBOOTES2: pdf , or FITS .
3C286: pdf , or FITS .
OQ208: pdf , or FITS .
J1426+3625: 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.