Defect Genealogy
Full provenance — wafer arrival to final inspection
Module
mod_showcase_bubble_001
Defects 198 + 199 (Bubbles, Scrap)
Final Pmax
502 W
382 min total
Tier
Scrap
defects 198, 199
This module shows defects 198 and 199 from Laminator 2 membrane fatigue. Engineer accepted the membrane swap recommendation at 09:16, but degradation had progressed enough that bubbles formed before the scheduled 12:00 maintenance.
Genealogy timeline · click any event for detail
WaferCell-sideModule-sideParameter ΔAlertsRecommendationsInspectionsDefectsDefect cards red-bordered · solid lines = direct causation
SPC charts · Vasu's monitoring framework
Vacuum Hold Pressure · Laminator 2
X-bar R chart
warn 8 · action 12 mbar
Vacuum hold pressure drifted from nominal 4 mbar to 6.1 mbar by 09:14, crossing the 8 mbar warning during the showcase module's cycle (peak 7.8 mbar). After membrane replacement at 12:00, returned to 3.8 mbar.· Green dashed: If predictive maintenance triggered at 06:00.
Membrane Health · Laminator 2
I-MR chart
warn 0.85 · action 0.78 index
Membrane health degraded steadily from 0.94 toward action threshold 0.78. Crossed warning 0.85 at ~08:00 — six hours before scheduled replacement.
Lamination Bubble Rate · Laminator 2
p-chart
warn 0.02 · action 0.04 proportion
Per-lot bubble defect proportion crossed action threshold 4% during the affected 4-hour window, returning to nominal after the 12:00 membrane swap.
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 · 1 chain
198 Bubble in active area
top confidence 91%
Laminator 2 membrane fatigue91% · sig 94%
EVA roll moisture6% · sig 22%
Other / unattributed3% · sig 0%
Blast radius · 1 cluster
cluster_laminator2_membrane_fatigue
Laminator 2 Membrane Fatigue · 08:00–12:00
23 modsdefects: 17clean: 6sig 74%
RIL 198 × 12RIL 199 × 6
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
~$1,530 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.