tess-wasp12-residual-01
Residual screen of WASP-12, Sectors 20 and 43

Declared test: isolated negative excursions ≥5 robust-MAD, ≥2 cadences, in both SAP and PDCSAP, outside ±0.08 phase of the known transit.

In two verified SPOC 120-s light curves of TIC 86396382 / WASP-12 (Sectors 20 and 43), test whether any isolated negative excursion survives robust local-baseline subtraction, appears in SAP and PDCSAP flux, and lies outside the known WASP-12 b transit phase. A finite anomaly triage, not a novelty search.

completed — bounded null

Scope

Domain: not recorded
Target pool: not recorded
Targets: WASP-12

Method 4 steps, run in order

Implementation status is taken from the module register. A step whose module is only designed cannot run yet.

fetch_products
status unknown no matching module in the register
residual_screen
status unknown no matching module in the register
calibrate_screen
status unknown no matching module in the register
prior_art
status unknown no matching module in the register

Thresholds

Parameter	Value	Note

Search log

Negative results and limitations

Recorded in the campaign's report and search log, including every check marked not tested.

Specification

File: campaigns/tess-wasp12-residual-01.yaml
Modified: 2026-09-24T07:43:29Z
Size: 4.6 KB

tess-wasp12-residual-01.yaml Campaign specification (YAML) · 4.6 KB · sha256 c7b781c4e68a… Download tess-wasp12-residual-01.yaml

Published in

WASP-12 in TESS: recovery test and residual screen, September 2026

Specification text

schema: cygnus.campaign/1
campaign_id: tess-wasp12-residual-01
objective: >
  In two verified SPOC 120-s light curves of TIC 86396382 / WASP-12 (Sectors 20 and 43), test
  whether any isolated negative excursion survives robust local-baseline subtraction, appears in
  SAP and PDCSAP flux, and lies outside the known WASP-12 b transit phase. A finite anomaly
  triage, not a novelty search.
outputs: reports/tess-wasp12-residual-01/
random_seed: 20260924

targets:
  - name: WASP-12            # position from docs/tier1_pack/NAME_RESOLUTIONS.json (CDS Sesame)

input:
  archive: MAST
  release_pipeline: TESS SPOC
  products:
    - product_id: tess2019357164649-s0020-0000000086396382-0165-s_lc.fits
      sector: 20
      expected_sha256: bf74a16f6e0c40b693a66de922e142d446cb44cee5bb7f26843062e436957f63
      expected_bytes: 1926720
    - product_id: tess2021258175143-s0043-0000000086396382-0214-s_lc.fits
      sector: 43
      expected_sha256: e3d5c6f76884014ec1dec1eb60f04eaf734330a7abd8eef99141f49df03b2493
      expected_bytes: 1811520

# Known-signal veto: the WASP-12 b transit. These exact values were used by the 2026-09-24 run
# (previously hard-coded in tools/analyze_tess_residual.py; the old spec's rounded 1.0914 d was a drift).
veto:
  kind: ephemeris
  period_days: 1.09141890100
  t0_bjd: 2457607.51930500
  veto_phase: 0.08
  source: NASA Exoplanet Archive pscomppars, queried 2026-09-24 (see SEARCH_LOG.md)

steps:
  - fetch_products:
      search_dirs: ["scratch:campaign_wasp12"]    # where the 2026-09-24 run staged the files
  - residual_screen:
      windows_days: [1.0, 2.0, 3.0]
      k_mad: 5.0                   # the declared 2026-09-24 threshold; calibrate_screen tests it
      min_cadences: 2
      series_window_days: 2.0
  - calibrate_screen:
      declared_k: 5.0
      window_days: 2.0
      k_grid: [2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 7.0, 8.0]
      max_null_events: 0
      depths_ppm: [1000, 2000, 5000, 7500, 10000, 15000, 20000]
      durations_h: [0.5, 1.0, 2.0, 4.0]
      injections_per_cell: 10
      reference_signal: {depth_ppm: 5000, duration_h: 2.0}
  - prior_art:
      radius_arcsec: 30

record:
  path: reports/tess-wasp12-residual-01/sky_record.json
  title: Residual screen of WASP-12, TESS Sectors 20 and 43
  kind: residual screen
  outcome: bounded_null
  date: "2026-09-24"
  report: reports/tess-wasp12-residual-01/REPORT.md
  search_log: reports/tess-wasp12-residual-01/SEARCH_LOG.md
  summary: >
    No ≥5 robust-MAD, ≥2-cadence negative excursion outside ±0.08 phase of the known WASP-12 b
    transit in SAP or PDCSAP flux, for 1/2/3-day baselines, in either sector. Bounded null; no candidate.
  checks:
    - {name: "Product integrity (SHA-256)", state: not_tested}
    - {name: "Calibrated false-alarm threshold (sign-flip null)", state: not_tested}
    - {name: "Synthetic signal injection–recovery", state: not_tested}
    - {name: "Catalogue cross-match", state: not_tested}
    - {name: "Centroid correlation with residuals", state: not_tested, note: "Centroids exist in the light curves but were not correlated."}
    - {name: "Pixel-level background / blend inspection", state: not_tested}
    - {name: "Cosmic-ray / hot-pixel audit", state: not_tested}
    - {name: "Independent reduction", state: not_tested}
    - {name: "Independent instrument", state: not_tested, note: "Sector 43 is a second epoch from the same instrument and pipeline."}
    - {name: "Literature (ADS) audit", state: not_tested, reported_as: "not completed", note: "No ADS access; catalogue cross-match is separate."}
  plots:
    - {type: fold, file: reports/tess-wasp12-residual-01/sector20/normalized_series.csv, time_col: TIME_stored, time_offset_bjd: 2457000,
       flux_col: PDCSAP_FLUX, quality_col: QUALITY, period_days: 1.091418901, t0_bjd: 2457607.519305, window_hours: 4, veto_phase: 0.08,
       depth_window_hours: 0.5, label: "Sector 20 PDCSAP, folded on the NASA Exoplanet Archive ephemeris"}
    - {type: fold, file: reports/tess-wasp12-residual-01/sector43/normalized_series.csv, time_col: TIME_stored, time_offset_bjd: 2457000,
       flux_col: PDCSAP_FLUX, quality_col: QUALITY, period_days: 1.091418901, t0_bjd: 2457607.519305, window_hours: 4, veto_phase: 0.08,
       depth_window_hours: 0.5, label: "Sector 43 PDCSAP, same fold"}
    - {type: timeseries, file: reports/tess-wasp12-residual-01/sector20/normalized_series.csv, time_col: TIME_stored, time_offset_bjd: 2457000,
       flux_col: PDCSAP_FLUX, quality_col: QUALITY, label: "Sector 20 PDCSAP light curve, 30-min medians"}