Adding new STIS notebook Low_Count_Uncertainties.ipynb (#288)

* Added STIS notebook Low_Count_Uncertainties.ipynb, requirements.txt, and pre-requirements.sh * PEP 8 Fixes * Updating STIS README and _toc.yml to include low_count_uncertainties notebook * Update pre-requirements.sh to test hstcal * Update requirements.txt * path fixes, print statements fixes, and adding helper functions * pep 8 fixes * pep 8 fixes * pep 8 fixes * path error fix * path error fix * path error fix * path error fix * Correct variable interpolation for raw_file in CRDS bestrefs command --------- Co-authored-by: Hatice Karatay <[email protected]>
spacetelescope · Oct 22, 2024 · 45e4ae4 · 45e4ae4
1 parent a4b9ca8
commit 45e4ae4
Show file tree

Hide file tree

Showing 5 changed files with 975 additions and 0 deletions.
diff --git a/_toc.yml b/_toc.yml
@@ -62,6 +62,7 @@ parts:
     - file: notebooks/STIS/target_acquisition/target_acquisition.ipynb
     - file: notebooks/STIS/view_data/view_data.ipynb
     - file: notebooks/STIS/extraction/1D_Extraction.ipynb
+    - file: notebooks/STIS/low_count_uncertainties/Low_Count_Uncertainties.ipynb
   - caption: WFC3
     chapters:
     - file: notebooks/WFC3/README.md

diff --git a/notebooks/STIS/README.md b/notebooks/STIS/README.md
@@ -21,6 +21,8 @@ An introductory Jupyter Notebook showing how to create a custom CCD dark referen
 An introductory Jupyter Notebook that shows how to visualize and obtain information about a target acquisition. It provides examples for a successful acquisition and several typical failure cases.
 ### Correcting for Missing Wavecals with Cross-Correlation (cross-correlation)
 A complementary Jupyter Notebook to the Acquisition Notebook, that shows how to find and correct the zero point spectral shift using cross-correlation.
+### Low Count Uncertainties in STIS (low_count_uncertainties)
+A Jupyter Notebook exploring how uncertainties are calculated in the STIS pipeline. This also shows how certain approximations break down in the low flux regime (e.g., dim FUV continua), and demonstrates how users can calculate more robust uncertainties when dealing with low flux data. Lastly, this explores a known bug in calculation of uncertainties when using INTTAG to split exposures into sub-exposures in TIME-TAG files.
 
 
 Each folder has a HTML file that can be opened in a browser after cloning this repository. The HTML file is identical to the notebook, except they contain output plots and tables.