{
  "title": "Fixed-placement synthetic line-injection check",
  "input_scope": {
    "complete_spectra": 12,
    "available_in_preserved_prefix": 31,
    "channels_searched": 512,
    "channel_width_hz": 2861.022949,
    "sample_interval_seconds": 1.073741824,
    "template_frames": 8,
    "template_duration_seconds": 8.59,
    "possible_start_positions": 5
  },
  "search": {
    "normalization": "per-frame local median/MAD; 32 neighboring channels on either side, excluding tested channel",
    "threshold_label_in_software": "5 matched-filter sigma; not empirically calibrated",
    "baseline_maximum_score": 3.3454,
    "baseline_windows_at_or_above_threshold": 0,
    "injection_placement": "same central channel and same 8-frame start for each amplitude"
  },
  "results": [
    {
      "amplitude_local_MAD_units": 0,
      "target_score": -2.4173,
      "blind_search_max_score": 3.3454,
      "recovered": false
    },
    {
      "amplitude_local_MAD_units": 1,
      "target_score": 0.3903,
      "blind_search_max_score": 3.3454,
      "recovered": false
    },
    {
      "amplitude_local_MAD_units": 2,
      "target_score": 3.198,
      "blind_search_max_score": 3.3454,
      "recovered": false
    },
    {
      "amplitude_local_MAD_units": 3,
      "target_score": 6.0057,
      "blind_search_max_score": 6.0057,
      "recovered": true
    },
    {
      "amplitude_local_MAD_units": 4,
      "target_score": 8.8133,
      "blind_search_max_score": 8.8133,
      "recovered": true
    },
    {
      "amplitude_local_MAD_units": 6,
      "target_score": 14.4286,
      "blind_search_max_score": 14.4286,
      "recovered": true
    },
    {
      "amplitude_local_MAD_units": 8,
      "target_score": 20.0439,
      "blind_search_max_score": 20.0439,
      "recovered": true
    }
  ],
  "interpretation": "A deterministic software-recovery ladder at one fixed placement; not a detection-probability curve, sensitivity calibration, false-alarm-rate estimate, Gaussian significance calibration, or independent observation.",
  "provenance_limit": "The upstream URL and independent checksum for the preserved local 64 MiB input prefix are not recorded in the available audit receipt; output is reproducible only from that retained local prefix and the recorded code version.",
  "reproduction_code": "https://github.com/UCBerkeleySETI/blimpy (format background only; not the project injection script)",
  "input_sha256": "0145871cda7dabe17393e9b622fe3891bb0e5592fd0c21e56e012cf124265cc4",
  "script_sha256": "8af45208f57254404130534426ed3fe75939876e0050fa1c3744826007024038",
  "result_sha256": "f021609339c01c2920c990015d48799ec8f7664bcb6f30a5c7a15b49a0c686bd"
}