Point Source Spectral Fitting with Normalizing Flows Approximation for Response and Background#515

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scipascal wants to merge 16 commits intocositools:developfrom

scipascal:interfaces

Commits on Mar 13, 2026

Committing my local changes to interfaces branch
pjanowsk
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Changed treatment of livetime ratio
pjanowsk
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Apply my latest changes on top of the rebase about EventData and PhotonList
pjanowsk
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Fixed bug in sampling
pjanowsk
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Moved NN implementation to own files and added import safeguard
pjanowsk
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Changed filenames nn -> nf
pjanowsk
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Renamed files, separated parts in to modules to allow for greater overlap with background development, fixed batchsize and compile mode setter bug.
pjanowsk
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Made the normalizing flows code more general to avoid repetition when used for background.
pjanowsk
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Added background implementation. Since the effective area and normalizing flows models contain CPU syncs, the cuda streams provide no benefit and will be removed. This commit saves the current state.
pjanowsk
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Changes before cosipy PR.
pjanowsk
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Fixed small bug where due to limited precision the jacobian could be negative and not just infinite
pjanowsk
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Bug fix. Source should receive flat array.
pjanowsk
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Added crab tutorial with normalizing flows
pjanowsk
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Added response and background checkpoint to wasabi
pjanowsk
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Commits on Mar 15, 2026

Added option to compare the best fit and injected spectrum to tutorial notebook
pjanowsk
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Commits on Mar 19, 2026

Fixed iminuit not converging by forcing float64. Replaced vectorized with batch_size for the unbinned_model_folding. Updated the tutorial.
pjanowsk
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