| Page properties |
|---|
|
| Status | | Status |
|---|
| colour | Yellow |
|---|
| title | In progress |
|---|
|
|
|---|
| Stakeholders | |
|---|
| Outcome | We will look into improving the model.
Mark says to continue including affected data in SRDP and do not flag the data. In comparison to the recent 3C147 model issue, we do not see ramps in amp vs freq solutions. Include a note similar to amp ramp note: "The current calibrator models for resolved flux density calibrators in A-configuration in CASA are created with narrow band data. At the high frequencies of a broad band observation, this can mean that the calibrator model does not represent the structure of the calibrator very well, leading to amplitude errors that reduce the dynamic range of the calibrated data. This will be remedied in a future version of CASA and the pipeline."
|
|---|
| Due date | |
|---|
| Owner | |
|---|
|
Background
Data sets show short baselines at the end of E and W arms with high amps in the amp vs uvwave plots. Paul suggests the long baselines have too much power in comparison. Juergen suggests S band may also be affected.
...
Same data set/plot using a model for 3C286 made at 26 GHz (same as original model):
Likely the same issue for 3C147 - plot from 20B-342.sb39244407.eb41801147.59713.02153945602:
Image Added
Action items
