EVN User Experiment Pipeline Feedback


Pipeline feedback for experiment EC029A. If you have any comments on this experiment please email the address below.
A detailed description of the pipeline output is available.

Last updated: Tue Feb 2 15:50:03 CET 2010 yang@jive.nl

General Comments. ( Brief data summary and scan listing )
EC029A is a L band (1.6 GHz) user experiment on 5 Nov 2009. The data rate was 1 Gbps (16 x 16 MHz subbands, dual polarization, two-bit sampling). The experiment observed five sources J317+4115, J131225, J1640+3946, J163650, and 3C345. In this pipeline reduction, Ef was served as the reference antenna, the source J131225 and J163650 were calibrated by the phase-referencing sources J1317+4115 and J1640+3946 respectively. 3C345 was the fringe finder.

8 stations participated in the experiment: EF, MC, ON, JB, UR, Nt, Tr, Wb. EF missed about an hour (~04h40m -- 05h40m) due to a MK5 hang during a pack change. ON lost about an hour (~12h -- 13h) to investigate a problem with the noise diode. MC missed the first couple hours because of MK5 disk pack problems (04h00 - 06h46m). TR missed about an hour (11h48m -- 12h53m) beacuse of MK5 pack problem. NT lost three hours totally due to problem with FS (08h54m -- 09h35m) and some unkown problems (~10h30 -- 12h30m & ~13h20m -- 13h50m).

The EVN reliability indicator (ERI) for this experiment was ERI = 0.82 . ERI* = 0.82 . (EF=0.92, JB=1, ON=0.92, MC=0.77, NT=0.75, Tr=0.92, Wb=1, UR=1)

Plots of the autocorrelations
Comments.

plots of the uncalibrated amplitude and phase against time
Comments.
Fringes were found on the reference sources.

Plots of the uncalibrated amplitude and phase against frequency channel
Comments.
Clock delay works fine. 246 pages

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

TSYS against time
Comments.
JB: Bad Tsys data in IF 5 & 6. MC: High Tsys in useless IF1. TR: Tsys data looks bad. 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.
8 pages

Fringe-fit phase solutions (including Parallactic Angle correction).
Comments.
refant = Ef; WB: IF2 rotates much faster than the other IFs. UR: Phase in some IFs rotates too fast to be reasonalbe at around 8h00m UT due to bad fringe rate solutions. 13 pages

Fringe-fit delay solutions
Comments.
refant = Ef; 8 pages

Fringe-fit rate solutions
Comments.
refant = Ef; OK: residual fringe rates on the order of mHz; 8 pages

Telescope bandpasses
Comments.
refant = Ef; OK: amplitudes and phase correction looks reasonalble. 2 pages

Calibrated amplitude and phase against time (a priori amplitude calibration and fringe-fit solutions applied).
Comments.
OK: Phase is around zero for the reference sources. 16 pages

Calibrated amplitude and phase against frequency channel
Comments.
OK: Phase is flat across frequency channel for the reference sources. 243 pages

Naturally weighted dirty map (not useful for bright sources) produced before self-cal of:
J1317+4115: pdf (not available) , or FITS (not available) .
J131225: pdf , or FITS .
J163650: pdf , or FITS .
J1640+3946: pdf (not available) , or FITS (not available) .
3C345: pdf (not available) , or FITS (not available) .
Comments.

Uniformly weighted dirty map (not useful for bright sources) produced before self-cal of:
J1317+4115: pdf (not available) , or FITS (not available) .
J131225: pdf , or FITS .
J163650: pdf , or FITS .
J1640+3946: pdf (not available) , or FITS (not available) .
3C345: pdf (not available) , or FITS (not available) .
Comments.

Phase corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
J1317+4115 .
J131225 (not available) .
J163650 (not available) .
J1640+3946 .
3C345 .
Comments.
refant = Ef phase corrections of the order of degrees (< 20 deg);

Amplitude corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
J1317+4115: pdf , or text file , or statistical summary .
J131225: pdf (not available) , or text file (not available) , or statistical summary (not available) .
J163650: pdf (not available) , or text file (not available) , or statistical summary (not available) .
J1640+3946: pdf , or text file , or statistical summary .
3C345: pdf , or text file , or statistical summary .
Comments.
ON: RCP amplitude was too high. NT; too low in R3. WB; L2 and R2 were affected by RFI.

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.

Residual closure phase (visibility closure phase with model closure phase subtracted) for:
J1317+4115 .
J131225 (not available) .
J163650 (not available) .
J1640+3946 .
3C345 .
Comments.

Calibrated visibilities and the source model of:
J1317+4115 .
J131225 (not available) .
J163650 (not available) .
J1640+3946 .
3C345 .
Comments.
OK

Calibrated visibilities against u,v distance for:
J1317+4115: pdf , or png .
J131225: pdf , or png .
J163650: pdf , or png .
J1640+3946: pdf , or png .
3C345: pdf , or png .
Comments.

u,v coverage for:
J1317+4115: pdf , or png .
J131225: pdf , or png .
J163650: pdf , or png .
J1640+3946: pdf , or png .
3C345: pdf , or png .
Comments.

Crude maps of sources:
J1317+4115: pdf , or FITS .
J131225: pdf , or FITS .
J163650: pdf , or FITS .
J1640+3946: pdf , or FITS .
3C345: pdf , or FITS .
Comments.
The two weak targets were not detected by the pipeline. Carefully mannual data reduction may detect the two sources.