EVN Network Monitoring Experiment (NME) Pipeline Feedback
Pipeline feedback for experiment N03L2_2.
If you have any comments on this experiment please email
the
address below.
Last updated: Thu Jun 26 12:01:58 CEST 2003
paragi@jive.nl
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General Comments.
(
Brief data summary and
scan listing.)
Continuum experiment recorded at 256 Mbps for 5.5 hours. Effelsberg was the reference antenna. Jodrell Bank and Shanghai could not participate. Cm changed to single polarization in the last two passes (for checking the setup).
The EVN reliability indicator was ERI=ERI*=0.74, not counting the loss of
Shanghai that appeared in the block schedule, but could not observe (Cm=0.5, Ef=1,
Wb=1, Mc=1, On=1, Tr=0.9, Nt=0.5, Ur=0.9, Hh=1).
Plots of the autocorrelations.
Comments.
On: RFI in L2/R2
Tr: L2 flagged most of the time due to bad playback
Mc: very strong RFI in L4
Hh: RFI in L3/R3
Nt: L2 and L4 flagged most of the time due to bad playback
Plots of the uncalibrated amplitude and phase against time.
Comments.
Tr: L2 flagged most of the time due to bad playback
Nt: L2 and L4 flagged most of the time due to bad playback
Plots of the uncalibrated amplitude and phase against frequency
channel.
Comments.
Cm: fringes only in L4/R4, nothing in L3/R3 (according to vexfile, these were related to BBC 3 and BBC 4 lower sidebands, respectively). There was a strong cutoff in the band. The single polarization setup in the last two passes did not work well.
Ur: L4 (BBC 3, upper sideband) and R1 (BBC 2, lower sideband) had very bad sampler statistics; L4 had a low amplitude (R1 low amplitude had been corrected). R2 had a too high amplitude (BBC 2, upper sideband). R3 and 4 produced no fringes in the first half of the experiment (BBC 4).
Nt: no fringes in R3 and R4 (BBC 3)
The uncalibrated amplitude and phase of the crosshand
correlations against frequency channel.
Comments.
Wb: polarization setup improved very much; there is a small leakage difference between subbands 1-2, and 3-4
TSYS against time.
Comments.
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.
Mc: R3 and 4 were a bit less sensitive than expected (SEFD=582 Jy, see the EVN Status Tables)
Ur: less sensitive than expected, especially R1 and 2 (SEFD=240 Jy)
Nt: less sensitive than expected (SEFD=784 Jy)
Fringe-fit phase solutions.
Comments.
Fringe-fit delay solutions.
Comments.
Fringe-fit rate solutions.
Comments.
Telescope bandpasses.
Comments.
Band edges were flagged.
Calibrated amplitude and phase against time
(a priori amplitude calibration and fringe-fit solutions applied).
Comments.
Calibrated amplitude and phase against frequency channel.
Comments.
Cm: fringes only in L4 (sometimes R4); lower half of these subbands had to be flagged
Phase corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
Comments.
Amplitude corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
Also available as a text file.
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.
Mc: Rpol less sensitive than expected
Ur: R1 and 2 low sensitivity (mentioned above) corrected for by Tsys
Nt: less sensitive than expected
Residual closure phase (visibility closure phase with
model closure phase subtracted) for DA193.
Residual closure phase (visibility closure phase with
model closure phase subtracted) for 3C84.
Residual closure phase (visibility closure phase with
model closure phase subtracted) for J0310+3814.
Residual closure phase (visibility closure phase with
model closure phase subtracted) for J0518+3306.
Residual closure phase (visibility closure phase with
model closure phase subtracted) for J0607+4739.
Comments.
Calibrated visibilities and the source model of
DA193.
Calibrated visibilities and the source model of
3C84.
Calibrated visibilities and the source model of
J0310+3814.
Calibrated visibilities and the source model of
J0518+3306.
Calibrated visibilities and the source model of
J0607+4739.
Comments.
Calibrated visibilities against u,v distance for
DA193.
Calibrated visibilities against u,v distance for
3C84.
Calibrated visibilities against u,v distance for
J0310+3814.
Calibrated visibilities against u,v distance for
J0518+3306.
Calibrated visibilities against u,v distance for
J0607+4739.
Comments.
u,v coverage for
DA193.
u,v coverage for
3C84.
u,v coverage for
J0310+3814.
u,v coverage for
J0518+3306.
u,v coverage for
J0607+4739.
Comments.
Crude map of DA193 from the pipeline.
Crude map of 3C84 from the pipeline.
Crude map of J0310+3814 from the pipeline.
Crude map of J0518+3306 from the pipeline.
Crude map of J0607+4739 from the pipeline.
Comments.