EVN User Experiment Pipeline Feedback
Last updated: Mon Oct 11 18:06:37 CEST 2010
yang@jive.nl
General Comments.
(
Brief data summary
and
scan listing
)
5cm band (6 GHz) network monitoring experiment (NME) observed on 1 Jun 2010. The data rate was 512 Mbps (8 x 8 MHz subbands, dual polarization, two-bit sampling). The experiment consisted of long scans on the calibrator sources J0958+4725, 4C39.25, as well as a fast-phase referencing part with 'J0926+4029' as the target and '4C39.25' as the phase-reference source. In this pipeline reduction, Ef served as reference antennas and Ef was the plot reference, i.e. baselines to Ef are plotted.
The EVN reliability indicator (ERI) for this experiment was
ERI = 0.84 . ERI* = 0.84 .
(Cm=0.5, Ef=1, Jb=1, On=1, Mc=0.88, Sh=1, Tr=1, Wb=1). Cm: No fringes in RCP. Mc: No fringes in IFs 1 and 2, RCP. Wb: Used single dish and TADUmax backend. On the baselines to Wb, some small scale amplitude (10%) and phase jumps (~10 deg) were found. The further investigations by Wb shows that these jumps were very likely caused by the inteference from the other unused Wb telescopes.The problem will be avoided in the future by using attenuators for the output of unused telescopes. On: Showed small-scale (<10%) amplitude variation on all the baselines to On prabably due to pointing offset caused by strong winds. Futher investigation is still ongoing. Jb: Low amplitude in LCP.
Plots of the autocorrelations
Comments.
plots of the uncalibrated amplitude and phase
against time
Comments.
Cm: valid signal in IFs 5 and 6 only; 32 pages
Plots of the uncalibrated amplitude and phase
against frequency channel
Comments.
50 pages
The uncalibrated amplitude and phase of the crosshand
correlations against frequency channel
Comments.
TSYS against time
Comments.
On: Noisy Tsys due to small pointing offset caused by wind. Cm: dummy antab file was used.
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.
7 pages
Fringe-fit phase solutions
(including Parallactic
Angle correction).
Comments.
refant = Ef; 13 pages
Fringe-fit delay solutions
Comments.
refant = Ef; 13 pages
Fringe-fit rate solutions
Comments.
refant = Ef; 13 pages
Telescope bandpasses
Comments.
refant = Ef; 2 pages
Calibrated amplitude and phase against time
(a
priori amplitude calibration and fringe-fit solutions applied).
Comments.
16 pages
Calibrated amplitude and phase against frequency
channel
Comments.
36 pages
Naturally weighted dirty map (not useful for bright sources)
produced before self-cal of:
J0958+4725: pdf (not available)
, or
FITS (not available)
.
J0926+4029:
pdf
, or
FITS
.
4C39.25: pdf (not available)
, or
FITS (not available)
.
Comments.
Uniformly weighted dirty map (not useful for bright sources)
produced before self-cal of:
J0958+4725: pdf (not available)
, or
FITS (not available)
.
J0926+4029:
pdf
, or
FITS
.
4C39.25: pdf (not available)
, or
FITS (not available)
.
Comments.
Phase corrections applied to a priori calibrated and
fringe-fitted data by self-calibration.
J0958+4725
.
J0926+4029 (not available)
.
4C39.25
.
Comments.
refant = Ef;
Amplitude corrections applied to a priori calibrated and
fringe-fitted data by self-calibration.
J0958+4725:
pdf
, or
text file
, or
statistical summary
.
J0926+4029: pdf (not available)
, or
text file (not available)
, or
statistical summary (not available)
.
4C39.25:
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:
J0958+4725
.
J0926+4029 (not available)
.
4C39.25
.
Comments.
Calibrated visibilities and the source model of:
J0958+4725
.
J0926+4029 (not available)
.
4C39.25
.
Comments.
Calibrated visibilities against u,v distance for:
J0958+4725:
pdf
, or
png
.
J0926+4029:
pdf
, or
png
.
4C39.25:
pdf
, or
png
.
Comments.
u,v coverage for:
J0958+4725:
pdf
, or
png
.
J0926+4029:
pdf
, or
png
.
4C39.25:
pdf
, or
png
.
Comments.
Crude maps of sources:
J0958+4725:
pdf
, or
FITS
.
J0926+4029:
pdf
, or
FITS
.
4C39.25:
pdf
, or
FITS
.
Comments.