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Create a module to perform sky subtraction on the SCI1, SCI2, and SCI3 spectra using the SKY spectrum in the same frame. The sky spectrum to be subtracted might be a scaled copy of the SKY spectrum o…
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Spectrum from 20210107 has poor sky subtraction.
`plot_spectra -i /global/project/projectdirs/desi/spectro/redux/denali/tiles/pernight/80646/*/coadd-0-80646-*.fits -t 39628500788842368 --rebin 4`…
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The sky subtraction step of the pipeline has a widely varying runtime, likely due to an iterative algorithm and varying data quality.
The plot below shows the median runtime of the sky subtraction …
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On Nov 5th 2024 in daily a tile was observed on two exposures. The first was good, but the second had low exposure time (aborted) and was only run through sky subtractions. The column coloring is all …
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Right now sky subtraction works very locally, pixels right above/below the aperture trace.
Since wavelength space is bent/tilted, not perfectly vertical along y-axis, if you increase sky window sizes…
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Some files are failing like this:
```
The following have been reloaded with a version change:
1) conda/Mambaforge-23.1.0-1 => conda/Miniconda3-py311_23.11.0-2
The following have been relo…
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_Issue [JP-3647](https://jira.stsci.edu/browse/JP-3647) was created on JIRA by [Charles Proffitt](https://jira.stsci.edu/secure/ViewProfile.jspa?name=proffitt):_
When background subtraction is done…
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After running PESSTOSOFIPHOT for the old SN2013ak data set the sky subtracted and merged images are full of artifacts. The raw science frames look fine. The bug is still under investigation?
![sn201…
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At the end of the sky subtraction fit, we could consider fitting for a residual spectral background per CCD amplifier, either a constant term or a linear function of wavelength and a polynomial functi…
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From FY23 AE
- Quality assurance of the catalogues and data products produced thus far