Defect Genealogy
Full provenance — wafer arrival to final inspection
Module
mod_showcase_combined_001
Defects 101 + 198 (separate causes, separate chains)
Final Pmax
461 W
270 min total
Tier
Scrap
defects 101, 198
This module shows TWO independent defects from two separate root causes. Bayesian inverse holds both attribution chains separately — Chain 1 (microcrack) traces to Stringer 1 tension; Chain 2 (bubble) traces to Laminator 1 vacuum excursion. No conflation.
Genealogy timeline · click any event for detail
WaferCell-sideModule-sideParameter ΔAlertsRecommendationsInspectionsDefectsDefect cards red-bordered · solid lines = direct causation
Chain 1 — Stringer (microcrack)
String Tension · Stringer 1
CUSUM chart
warn 4.5 · action 4.8 N
Tension drifted from 4.2 to 4.7 N at 08:35. CUSUM warning crossed at 08:48; action threshold at 09:18 when operator reverted. This module processed at 08:53 in the middle of the window.· Green dashed: If tension recommendation accepted at 08:50.
Chain 2 — Lamination (bubble)
Vacuum Hold Pressure · Laminator 1
X-bar R chart
warn 8 · action 12 mbar
Single-cycle excursion to 7.2 mbar at 09:34 (just at warning threshold). Insufficient for sustained alert but enough to lock a gas pocket into this module.
Membrane Health · Laminator 1
I-MR chart
warn 0.85 · action 0.78 index
Laminator 1 membrane has been below warning threshold (0.85) for 24+ hours, last replaced 2,650 cycles ago. Slow degradation enabled the single-cycle excursion.
Counterfactual overlay — what should have happened
Toggle to overlay the alternate timeline branch where the platform's recommendations were accepted at the right moment.
Bayesian attribution · 2 chains
101 Crack cell middle
top confidence 84%
Stringer 1 tension excursion (08:35–09:18)84% · sig 89%
Ribbon batch variation11% · sig 47%
Other / unattributed5% · sig 0%
198 Bubble in active area
top confidence 76%
Laminator 1 vacuum hold excursion (09:34)76% · sig 81%
Laminator 1 membrane degradation trend18% · sig 38%
Other / unattributed6% · sig 0%
Two independent chains — no conflation. Each defect inherits its own posterior over upstream causes.
Blast radius · 2 clusters
cluster_stringer1_0835_excursion
Stringer 1 Tension Excursion · 08:35–09:18
8 modsdefects: 7clean: 1sig 76%
RIL 101 × 4RIL 102 × 3
cluster_laminator1_0934_excursion
Laminator 1 Vacuum Excursion · 09:34–11:04
11 modsdefects: 7clean: 4sig 67%
RIL 198 × 7
Cell provenance · 72 cells
Each cell carries its full station-visit history. Click a cell to inspect recipe snapshots and per-station measurements.
Module outcome
Final classification
Scrap
Economic impact
Cost basis $158 · Recovery $0
Counterfactual recovery
~$1,360 avoided
This page demonstrates full provenance for three showcase modules AND their full cluster genealogies — 53 additional cluster modules whose journeys share the same upstream causal events as the showcases. In production deployment, every module's complete genealogy and every cluster's full membership is tracked automatically. This demonstration shows what that looks like at the cluster scale.