Step -1.1: Validation of RIMEz

[steven-murray]

-1.1 -- Validation of RIMEz

This test should be a formal validation of RIMEz against pyuvsim.

• Simulation Component: point source, gaussian blob, GSM
• Simulators: RIMEz, pyuvsim
• Pipeline Components: None
• Depends on: Ideally, this depends on a semi-automatic notebook infrastructure for all -1 tests, being developed by @piyanatk .

Why this test is required

RIMEz is an integral simulator for the validation effort, in that it has simulated several large datasets against which further validation efforts are being run. Therefore it is of high importance to test RIMEz itself.

Summary

A brief step-by-step description of the proposed test follows:

• Construct visibilities from increasing-complexity sky models, both with RIMEz and pyuvsim.
• Compare visibilities explicitly, and report on the level of absolute and relative error between simulators, especially as a function of frequency.

Simulation Details

• Freq. range:
• Channel width:
• Baseline/antenna configuration:
• Total integration time:
• Number of realisations:

Criteria for Success

• Visibilities match to 1% between simulators across all frequencies, baselines and LSTs.

[jsdillon]

In particular, it's important to figure out what's causing the phase slope in the NS tip-tilt seen here:

For more discussion, see this slack conversation: https://eoranalysis.slack.com/archives/C3ZPGMG3E/p1572542543067100