EVN User Experiment Pipeline Feedback


Pipeline feedback for experiment RE001_1. 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 Mar 12 15:46:14 CET 2010 yang@jive.nl

General Comments. ( Brief data summary and scan listing )
RE001 was an EVN ToO experiment on 1 Feb. 2010. The observations used a data rate of 64 Mbps (8 * 2 MHz subbands, dual polarisation, 2-bit sampling). The data were correlated in three passes. Here, it is the pipelining results of the first passe, the continuum pass (32 channels per IF, 4 sec intergration time). The target sources 'OCETI' was calibrated using the phase-referencing source 'J0217-0121'. '3C84' and 'J0217-0121' were also observed as calibrators.

The EVN reliability indicator (ERI) for this experiment was ERI = 0.34 . ERI* = 0.51 . 8 stations participated. Ef participated in the observation only in scan 55 -- 60 (18h00m -- 18h30m UT). In the other scans, Ef had to stop the observations due to snow (The loss was not included in ERI*). Mc and Tr did not show any fringes to other stations although we did fringe searching with wide window and +/-1 second. Nt had a bad subband: IF1 (subband 3) in LCP. (Ef=0.06, Mc=0, Cm=1, On=1, Jb=1, Tr=0, Nt=0.88, Wb=1)

Plots of the autocorrelations
Comments.
Strong RFIs in IF 1 at JB, IF 4 at TR

plots of the uncalibrated amplitude and phase against time
Comments.
Ef: valid data only in 18h -- 18.5h UT. No fringes to MC and TR.

Plots of the uncalibrated amplitude and phase against frequency channel
Comments.
Cm: phase rotates too fast due to large delay in the first scan.

The uncalibrated amplitude and phase of the crosshand correlations against frequency channel
Comments.

TSYS against time
Comments.
Cm: dummy antab file was used. EF: valid Tsys data only in 18h -- 18.5h UT. Nt: no tsys data during the scan due to missing of "tpicd" messages in the log file. Tr: noisy Tsys data in IF 4

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.

Fringe-fit phase solutions (including Parallactic Angle correction).
Comments.

Fringe-fit delay solutions
Comments.
OK: <50 ns. Wb: reference antenna. SOLINT=2 min. Cm: clock jumped at the end of first scan.

Fringe-fit rate solutions
Comments.
OK: < 3 milliHz.

Telescope bandpasses
Comments.
Bad solutions: Ef, Mc, and Tr as they did not have fringes.

Calibrated amplitude and phase against time (a priori amplitude calibration and fringe-fit solutions applied).
Comments.
Phase was properly aligned for brighter calibrators (J0237+2848 and 3C84) and for the reference source on the short baselines to Wb.

Calibrated amplitude and phase against frequency channel
Comments.

Naturally weighted dirty map (not useful for bright sources) produced before self-cal of:
OCETI: pdf , or FITS .
J0237+2848: pdf (not available) , or FITS (not available) .
3C84: pdf (not available) , or FITS (not available) .
J0217-0121: pdf (not available) , or FITS (not available) .
Comments.

Uniformly weighted dirty map (not useful for bright sources) produced before self-cal of:
OCETI: pdf , or FITS .
J0237+2848: pdf (not available) , or FITS (not available) .
3C84: pdf (not available) , or FITS (not available) .
J0217-0121: pdf (not available) , or FITS (not available) .
Comments.

Phase corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
OCETI (not available) .
J0237+2848 .
3C84 .
J0217-0121 .
Comments.

Amplitude corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
OCETI: pdf (not available) , or text file (not available) , or statistical summary (not available) .
J0237+2848: pdf , or text file , or statistical summary .
3C84: pdf , or text file , or statistical summary .
J0217-0121: pdf , or text file , or statistical summary .
Comments.

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:
OCETI (not available) .
J0237+2848 .
3C84 .
J0217-0121 .
Comments.

Calibrated visibilities and the source model of:
OCETI (not available) .
J0237+2848 .
3C84 .
J0217-0121 .
Comments.

Calibrated visibilities against u,v distance for:
OCETI: pdf , or png .
J0237+2848: pdf , or png .
3C84: pdf , or png .
J0217-0121: pdf , or png .
Comments.

u,v coverage for:
OCETI: pdf , or png .
J0237+2848: pdf , or png .
3C84: pdf , or png .
J0217-0121: pdf , or png .
Comments.

Crude maps of sources:
OCETI: pdf , or FITS .
J0237+2848: pdf , or FITS .
3C84: pdf , or FITS .
J0217-0121: pdf , or FITS .
Comments.