EVN User Experiment Pipeline Feedback
Pipeline feedback for experiment EB024F.
If you have any comments on this experiment please email
the
address below.
Last updated: Tue Feb 3 11:01:29 CET 2004
biggs@jive.nl
|
General Comments.
(
Brief data summary
and
scan listing
)
This is an EVN-only spectral-line experiment at 21cm (dual polarisation, one-bit sampling, 1 IF per polarisation). Participating stations were Ef, Mc, Wb (tied-array - 13 ants!), On, Tr and Jb (Lovell). Fringes were not produced at Tr as the wrong skd file was used by the operator. The reference antenna for calibration and plotting was Ef. The EVN reliability indicator was ERI=0.50 (Ef=0.97, Mc=1.00, Wb=0.47, On=0.97, Tr=0.00, Jb=1.00) in this experiment. ERI gives you an estimate of the ratio of observed/good visibilities to the expected number visibilities. ERI* is the same but excludes data lost due to circumstances out of the EVN's control e.g. bad weather (ERI*=0.50).
Plots of the autocorrelations
.
Comments.
Particulary fierce RFI at JBO.
Plots of the uncalibrated amplitude and phase against time
.
Comments.
Data mostly look like noise apart from on 3C345 and OQ208.
Wb: last half of experiment lost due to power failure.
Plots of the uncalibrated amplitude and phase against frequency
channel
.
Comments.
Noisy data is again evident.
The uncalibrated amplitude and phase of the crosshand
correlations against frequency channel
.
Comments.
None.
TSYS against time
.
Comments.
Jb: large fluctuations.
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.
Most antennas have sensitivities comparable to those given in the EVN status table.
On: Sensitivity is somewhat better than one would expect.
Fringe-fit phase solutions
(including Parallactic Angle correction).
Comments.
No solutions found apart from OQ208 and 3C345.
Fringe-fit delay solutions
.
Comments.
No solutions found apart from OQ208 and 3C345.
Fringe-fit rate solutions
.
Comments.
No solutions found apart from OQ208 and 3C345.
Telescope bandpasses
.
Comments.
None.
Calibrated amplitude and phase against time
(a priori amplitude calibration and fringe-fit solutions applied).
Comments.
Only phase ref data close to bright sources survives calibration.
Calibrated amplitude and phase against frequency channel
.
Comments.
Only phase ref data close to bright sources survives calibration.
Naturally weighted dirty map produced before self-cal of:
1539+27
.
3C345
.
OQ208
.
Comments.
1539+27: no detection.
Uniformly weighted dirty map produced before self-cal of:
1539+27
.
3C345
.
OQ208
.
Comments.
None.
Phase corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
1539+27.
3C345.
OQ208.
Comments.
None.
Amplitude corrections applied to a priori calibrated and fringe-fitted data by self-calibration.
1539+27:
postscript
, or
text file
.
3C345:
postscript
, or
text file
.
OQ208:
postscript
, or
text file
.
Comments.
None.
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.
None.
Residual closure phase (visibility closure phase with model closure phase subtracted) for:
1539+27
.
3C345
.
OQ208
.
Comments.
None.
Calibrated visibilities and the source model of:
1539+27
.
3C345
.
OQ208
.
Comments.
Calibrated visibilities against u,v distance for:
1539+27.
postscript
, or
png (smaller)
3C345.
postscript
, or
png (smaller)
OQ208.
postscript
, or
png (smaller)
Comments.
None.
u,v coverage for:
1539+27.
postscript
, or
png (smaller)
3C345.
postscript
, or
png (smaller)
OQ208.
postscript
, or
png (smaller)
Comments.
None.
Crude map of 1539+27 from the pipeline
.
Crude map of 3C345 from the pipeline
.
Crude map of OQ208 from the pipeline
.
Comments.
None.