ULTRA l1b updates to spin and energy culling bins

[lacoak21]

Change Summary

Overview

Bob made some updates to the spin and energy bins that are used to cull spins at l1b. This includes combining spin bins into coarser bins for the high energy cull and updates to the number and size of the energy bins.

File changes

Testing

Created new data for the high energy validation test using Bobs updated code.

[Copilot]

Pull request overview

Updates ULTRA L1B culling configuration and logic to use revised energy-bin grouping and to smooth/aggregate spin-bin counts for high-energy culling, with corresponding constant and test updates.

Changes:

• Update energy-bin grouping for culling (new base bin, fewer culling thresholds, and optional “merge-above-energy” behavior).
• Modify high-energy culling to optionally combine multiple spin bins when computing counts.
• Refresh unit/external-validation tests to reflect the updated binning/threshold expectations.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 9 comments.

File	Description
imap_processing/ultra/l1b/ultra_l1b_culling.py	Adds optional spin-bin combining for high-energy culling and adds max_energy handling to energy-range binning.
imap_processing/ultra/constants.py	Updates culling constants: base energy bin, max-energy threshold, earth angle threshold, cull thresholds, and combined spin-bin size.
imap_processing/tests/ultra/unit/test_ultra_l1b_culling.py	Updates tests and expected outputs for revised energy ranges/threshold counts and adds a test for binned energy ranges.

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[laspsandoval]

Just one thing I caught. Nicely done Luisa!