EVN User Experiment Pipeline Feedback


Pipeline feedback for experiment EO007. 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 Nov 15 15:14:29 CET 2010 muehle@jive.nl

General Comments. ( Brief data summary and scan listing )
C band (6cm) continuum EVN experiment, observed on 19/20 March 2010. The data rate was 1024 Mbps (8 x 16 MHz subbands, dual polarization, two-bit sampling). The target sources 'J015028', 'J021348', 'J080844', 'J081523', 'J092159', 'J102959', 'J135355' and 'J210358' were calibrated using the phase reference sources 'J0158+1307', 'J0209+1352', 'J0808+4052', 'J0808+4950', 'J0920+4441', 'J1027+4803', 'J1344+6606', and 'J2110-1020', and the fringe finders '1842+681' and 'J0927+3902'. In this pipeline reduction, Ef, Wb and Nt served as reference antennas and Ef was the plot reference, i.e. except for the autocorrelations, baselines to Ef are plotted.
9 stations were scheduled to participate in the experiment: Ar, Ef, Jb, On, Mc, Nt, Tr, Ys and Wb. Ar was out for repair. At Jb, the recorder froze at 06:24-07:02 UT and the telescope was frequently off source for brief periods due to telescope encoder failures. On reported strong wind and some rain during the observations. At Tr, there was a problem with the elevation drive control at 17:21 - 19:00 UT and data throttling with one disk pack (02:00 - 23:56 UT). Ys missed scan #332 due to a long slewing time. More details about the observations and the data can be found in the letter to the P.I. which is also available from the archive (section "Standardplots").

The EVN reliability indicator (ERI) for this experiment was ERI = 0.76 . ERI* = 0.76 . (Ar=0, Ef=1, Jb=0.97, On=1, Mc=1, Nt=1, Tr=0.93, Ys=1, Wb=1)

Plots of the autocorrelations
Comments.
bandpasses looking good, except for Nt/IF5/LL and Jb/IF8/RR; only a few brief glitches; 770 pages

plots of the uncalibrated amplitude and phase against time
Comments.
phases of the calibrators can be followed even in uncalibrated data; amplitudes look stable; 32 pages

Plots of the uncalibrated amplitude and phase against frequency channel
Comments.
phases of the calibrators can easily be followed, even in uncalibrated data; bandpasses seem to be stable; Tr: amplitudes in RCP channels much lower than in LCP channels; 764 pages

The uncalibrated amplitude and phase of the crosshand correlations against frequency channel (not available)
Comments.

TSYS against time
Comments.
Ys: T_sys varies rapidly in IF1/R+L after ~13:00 UT; On: high T_sys at ~07:30 - 09:00 UT; 13 pages

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.
mimic curves of T_sys; 13 pages

Fringe-fit phase solutions (including Parallactic Angle correction).
Comments.
refant = Ef; Ys: few good solutions in IF1/R+L after ~13:00 UT; few brief glitches of fast phase rotation; 13 pages

Fringe-fit delay solutions
Comments.
refant = Ef; delays of the order of nanoseconds; a few outliers (~1 microsecond); 13 pages

Fringe-fit rate solutions
Comments.
refant = Ef; rates of the order of a few mHz; very few outliers (~10 mHz); 13 pages

Telescope bandpasses
Comments.
refant = Ef; amplitudes close to 1.0; phases generally very close to zero, except at the edges of the bandpasses of Ys, Wb, Nt and Tr; Jb: noisy phases in IF8/R; 2 pages

Calibrated amplitude and phase against time (a priori amplitude calibration and fringe-fit solutions applied).
Comments.
except for a few brief glitches, amplitudes seem to be stable in all IFs; phases of the calibrators aligned very close to zero in all IFs; Ys: in IF1/LL and IF1/RR only patchy data after 12:00 UT; 32 pages

Calibrated amplitude and phase against frequency channel
Comments.
phases of the calibrators in general close to zero, a bit more scatter for Tr; a few glitches in individual IFs on individual baselines, in particular in scans #19-31, some IFs of some stations should be flagged; 764 pages

Naturally weighted dirty map (not useful for bright sources) produced before self-cal of:
J0209+1352: pdf (not available) , or FITS (not available) .
J0808+4052: pdf (not available) , or FITS (not available) .
J080844: pdf , or FITS .
J0808+4950: pdf (not available) , or FITS (not available) .
J210358: pdf , or FITS .
J0920+4441: pdf (not available) , or FITS (not available) .
J0158+1307: pdf (not available) , or FITS (not available) .
J102959: pdf , or FITS .
J135355: pdf , or FITS .
1842+681: pdf (not available) , or FITS (not available) .
J081523: pdf , or FITS .
J021348: pdf , or FITS .
J015028: pdf , or FITS .
J2110-1020: pdf (not available) , or FITS (not available) .
J1027+4803: pdf (not available) , or FITS (not available) .
J092159: pdf , or FITS .
J0927+3902: pdf (not available) , or FITS (not available) .
J1344+6606: pdf (not available) , or FITS (not available) .
Comments.

Uniformly weighted dirty map (not useful for bright sources) produced before self-cal of:
J0209+1352: pdf (not available) , or FITS (not available) .
J0808+4052: pdf (not available) , or FITS (not available) .
J080844: pdf , or FITS .
J0808+4950: pdf (not available) , or FITS (not available) .
J210358: pdf , or FITS .
J0920+4441: pdf (not available) , or FITS (not available) .
J0158+1307: pdf (not available) , or FITS (not available) .
J102959: pdf , or FITS .
J135355: pdf , or FITS .
1842+681: pdf (not available) , or FITS (not available) .
J081523: pdf , or FITS .
J021348: pdf , or FITS .
J015028: pdf , or FITS .
J2110-1020: pdf (not available) , or FITS (not available) .
J1027+4803: pdf (not available) , or FITS (not available) .
J092159: pdf , or FITS .
J0927+3902: pdf (not available) , or FITS (not available) .
J1344+6606: pdf (not available) , or FITS (not available) .
Comments.

Phase corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
J0209+1352 .
J0808+4052 .
J080844 (not available) .
J0808+4950 .
J210358 (not available) .
J0920+4441 .
J0158+1307 .
J102959 (not available) .
J135355 (not available) .
1842+681 .
J081523 (not available) .
J021348 (not available) .
J015028 (not available) .
J2110-1020 .
J1027+4803 .
J092159 (not available) .
J0927+3902 .
J1344+6606 .
Comments.
refant = Ef; phase corrections of the order of degrees with a few outliers; corrections larger for J1344+6606 (some data yet to be flagged); 13 pages per source

Amplitude corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
J0209+1352: pdf , or text file , or statistical summary .
J0808+4052: pdf , or text file , or statistical summary .
J080844: pdf (not available) , or text file (not available) , or statistical summary (not available) .
J0808+4950: pdf , or text file , or statistical summary .
J210358: pdf (not available) , or text file (not available) , or statistical summary (not available) .
J0920+4441: pdf , or text file , or statistical summary .
J0158+1307: pdf , or text file , or statistical summary .
J102959: pdf (not available) , or text file (not available) , or statistical summary (not available) .
J135355: pdf (not available) , or text file (not available) , or statistical summary (not available) .
1842+681: pdf , or text file , or statistical summary .
J081523: pdf (not available) , or text file (not available) , or statistical summary (not available) .
J021348: pdf (not available) , or text file (not available) , or statistical summary (not available) .
J015028: pdf (not available) , or text file (not available) , or statistical summary (not available) .
J2110-1020: pdf , or text file , or statistical summary .
J1027+4803: pdf , or text file , or statistical summary .
J092159: pdf (not available) , or text file (not available) , or statistical summary (not available) .
J0927+3902: pdf , or text file , or statistical summary .
J1344+6606: pdf , or text file , or statistical summary .
Comments.
Nt: gain corrections in IF7+8/L+R and IF5/L slightly increased; Tr: large gain correction factors: LCP channels ~0.5, RCP channels ~5; large corrections for J1344+6606 (some data yet to be flagged!); 12-13 pages per source

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.
large jumps in sensitivity before 04:00 UT (some data yet to be flagged in scans #19-31), rest looks normal; a few stations show 1-2 small, brief spikes; Nt: decreased sensitivity in IF5/LCP and IF8/LCP; Tr: very low sensitivity in RCP channels (see comment above); 13 pages

Residual closure phase (visibility closure phase with model closure phase subtracted) for:
J0209+1352 .
J0808+4052 .
J080844 (not available) .
J0808+4950 .
J210358 (not available) .
J0920+4441 .
J0158+1307 .
J102959 (not available) .
J135355 (not available) .
1842+681 .
J081523 (not available) .
J021348 (not available) .
J015028 (not available) .
J2110-1020 .
J1027+4803 .
J092159 (not available) .
J0927+3902 .
J1344+6606 .
Comments.
except for J1344+6606 (some data yet to be flagged!), residual closure phases generally small; some outliers; 12 pages per source

Calibrated visibilities and the source model of:
J0209+1352 .
J0808+4052 .
J080844 (not available) .
J0808+4950 .
J210358 (not available) .
J0920+4441 .
J0158+1307 .
J102959 (not available) .
J135355 (not available) .
1842+681 .
J081523 (not available) .
J021348 (not available) .
J015028 (not available) .
J2110-1020 .
J1027+4803 .
J092159 (not available) .
J0927+3902 .
J1344+6606 .
Comments.
except for J1344+6606 (some data yet to be flagged!), very good agreement between models and data; few outliers; large scatter for Tr data/RCP channels; outlier in Ef data of J0920+4441 at ~19:45 UT; 32 pages per source

Calibrated visibilities against u,v distance for:
J0209+1352: pdf , or png (not available) .
J0808+4052: pdf , or png (not available) .
J080844: pdf , or png (not available) .
J0808+4950: pdf , or png (not available) .
J210358: pdf , or png (not available) .
J0920+4441: pdf , or png (not available) .
J0158+1307: pdf , or png (not available) .
J102959: pdf , or png (not available) .
J135355: pdf , or png (not available) .
1842+681: pdf , or png (not available) .
J081523: pdf , or png (not available) .
J021348: pdf , or png (not available) .
J015028: pdf , or png (not available) .
J2110-1020: pdf , or png (not available) .
J1027+4803: pdf , or png (not available) .
J092159: pdf , or png (not available) .
J0927+3902: pdf , or png (not available) .
J1344+6606: pdf , or png (not available) .
Comments.

u,v coverage for:
J0209+1352: pdf , or png (not available) .
J0808+4052: pdf , or png (not available) .
J080844: pdf , or png (not available) .
J0808+4950: pdf , or png (not available) .
J210358: pdf , or png (not available) .
J0920+4441: pdf , or png (not available) .
J0158+1307: pdf , or png (not available) .
J102959: pdf , or png (not available) .
J135355: pdf , or png (not available) .
1842+681: pdf , or png (not available) .
J081523: pdf , or png (not available) .
J021348: pdf , or png (not available) .
J015028: pdf , or png (not available) .
J2110-1020: pdf , or png (not available) .
J1027+4803: pdf , or png (not available) .
J092159: pdf , or png (not available) .
J0927+3902: pdf , or png (not available) .
J1344+6606: pdf , or png (not available) .
Comments.

Crude maps of sources:
J0209+1352: pdf , or FITS .
J0808+4052: pdf , or FITS .
J080844: pdf , or FITS .
J0808+4950: pdf , or FITS .
J210358: pdf , or FITS .
J0920+4441: pdf , or FITS .
J0158+1307: pdf , or FITS .
J102959: pdf , or FITS .
J135355: pdf , or FITS .
1842+681: pdf , or FITS .
J081523: pdf , or FITS .
J021348: pdf , or FITS .
J015028: pdf , or FITS .
J2110-1020: pdf , or FITS .
J1027+4803: pdf , or FITS .
J092159: pdf , or FITS .
J0927+3902: pdf , or FITS .
J1344+6606: pdf , or FITS .
Comments.