Canonical Input Guide

Accepted canonical path

• freq_hz is required.
• Use either complex channel columns (CHn_real, CHn_imag) or mag/phase columns (CHn_mag, CHn_phase_deg).
• Do not mix both schemas in the same file.
• Frequency values must be monotonic with no duplicates.
• Keep channels complete; avoid NaNs and partially empty channel pairs.
• Normal alpha evaluator path is capped to 12 channels.

Common reject triggers

• Missing required columns.
• NaNs or broken channel pairs.
• Non-monotonic or duplicated frequencies.
• Mixed complex and mag/phase representations.
• Files with non-usable or no-peaks spectral content.