Scan-calibrated oscillatory feature analysis of Planck 2018 TT, TE, and EE spectra

This repository contains the full analysis outputs supporting the manuscript "Scan-calibrated evidence for a localized multi-spectrum oscillatory feature in Planck 2018 temperature and polarization data. The dataset includes: Joint and per-spectrum Δχ² scan surfaces over frequency, phase, and scale parameters Best-fit amplitude grids for TT, TE, and EE Empirical null distributions from 10⁵ Gaussian simulations used for full-volume global p-value calibration ROI-restricted null distributions from 3×10⁵ Gaussian simulations used for localized tail calibration Empirical survival functions and rank-based tail diagnostics for ROI significance validation Permutation-based sign-coherence statistics Injection–recovery validation results Robustness tests across multipole cuts and template widths Deterministic even/odd holdout scan results Needlet-based higher-order and bispectrum-proxy statistics The full Jupyter notebook implementing the analysis pipeline All simulations were generated under the Planck 2018 best-fit ΛCDM covariance model. The Planck data products themselves are publicly available from the Planck Legacy Archive and are not redistributed here.