Flat and star_field

[jeremyneveu]

The goal of this PR is to include flat and star field simulations in the full forward model.

• flat
• star field
• mask exposure
• add correct order ratios for auxtel

In addition to these primary objectives, code was improved in the following way:

General

• masking of the pixels not maximally covered by the layers of the PSF cube
• higher diffraction order footprints enlarge to fit first order footprint
• use mask to remove cosmics
• fix A3 to zero
• use canonical polynomial parametrisation by default
• more robust way to set weight of outliers to zero

Extraction:

• restrict PSF Moffat boundaries,
• fit angle and shift_y,
• no wavelength evolution of PSF for higher dffraction orders
• adjust A1 to help finding the spectrogram trace before FFM

Fit spectrogram

• adjust A1, shift_y and angle before complete fit
• no wavelength evolution of PSF for higher dffraction orders

Auxtel

• large uncertainties for throughput below 380nm and above 1000nm
• extrapolation of the ratio 2/1 and 3/2 using a hologram transmission model
• beginning of a full chain test

[coveralls]

Pull Request Test Coverage Report for Build 10563651422

Details

• 640 of 776 (82.47%) changed or added relevant lines in 17 files are covered.
• 27 unchanged lines in 4 files lost coverage.
• Overall coverage decreased (-0.8%) to 89.142%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
spectractor/config.py	1	2	50.0%
spectractor/tools.py	29	30	96.67%
spectractor/fit/fit_spectrum.py	9	12	75.0%
spectractor/extractor/images.py	48	52	92.31%
spectractor/fit/fit_spectrogram.py	94	99	94.95%
spectractor/extractor/extractor.py	125	131	95.42%
spectractor/fit/fitter.py	12	18	66.67%
spectractor/extractor/chromaticpsf.py	63	73	86.3%
spectractor/extractor/psf.py	60	75	80.0%
spectractor/simulation/image_simulation.py	116	135	85.93%

Files with Coverage Reduction	New Missed Lines	%
spectractor/extractor/spectrum.py	3	92.06%
spectractor/extractor/extractor.py	4	88.75%
spectractor/simulation/image_simulation.py	5	83.75%
tests/test_fullchain.py	15	62.67%

Totals
Change from base Build 10563263662:	-0.8%
Covered Lines:	7602
Relevant Lines:	8528

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💛 - Coveralls