USGS Quality EvaluationPROCESS · distance 1
dataset:earthquake-eventsprocess:quality-usgs
Incident detail
Earthquake events · depth_km PSI drift
Incident summary
DATA DRIFT · WARNING severity
RESOLVED
Earthquake events
depth_km PSI drift · drift:depth_km:psi
Earthquake events depth_km PSI drift detected. Observed metric: 0.31201573041501257; threshold: 0.3.
Occurrences7Persisted observations
Last seen10:54:41 AM
- Opened
- Incident key
earthquake-events:drift:depth_km:psi- Resolved
Deterministic root cause
A ranked explanation derived from persisted evidence. It is authoritative for this view; optional AI is shown later.
No AI inference
Top ranked causeDISTRIBUTION SHIFT
HIGH confidenceProbable cause: distribution shift. Evidence: psi distribution shift. Confidence: HIGH. Affected downstream assets: 3.
Ranked candidates
#1 DISTRIBUTION SHIFTHIGH confidence
score 10Evidence used
psi distribution shiftDRIFT_RESULT · drift_results
weight 10Algorithm deterministic-rca-v1 · fingerprint c60b46d36a26… · created 9/6/2026, 10:54:39 AM
Evidence
Human-readable fields are the first view. Raw JSON remains available when exact payload inspection is useful.
7 occurrences
- Method
- PSI
- Details.Epsilon
- 0
- Details.Baseline Bins
- [1.543999958038,2.255999994278,3.75448,5,7.379999876022,10,13.735,27.470000457764,51.83]
- Details.Location Shift.P95 Shift
- -35.029
- Details.Location Shift.Mean Shift
- -1.921
- Details.Location Shift.Current P95
- 74.2
- Details.Location Shift.Baseline P95
- 109.229
- Details.Location Shift.Current Mean
- 18.552
- Details.Location Shift.Median Shift
- -1.476
- Details.Location Shift.Baseline Mean
- 20.473
- Details.Location Shift.Current Median
- 5.904
- Details.Location Shift.Baseline Median
- 7.38
- Details.Location Shift.Normalized Median Shift
- -0.107
- Details.Warning Threshold
- 0.15
- Details.Current Distribution
- [0.043010752688172046,0.07526881720430108,0.17204301075268819,0.11827956989247312,0.15053763440860216,0.010752688172043012,0.13978494623655913,0.07526881720430108,0.15053763440860216,0.06451612903225806]
- Details.Baseline Distribution
- [0.10091743119266056,0.10091743119266056,0.10091743119266056,0.0871559633027523,0.11009174311926606,0.08256880733944955,0.11467889908256881,0.10091743119266056,0.10091743119266056,0.10091743119266056]
- Threshold
- 0.3
- Column Name
- depth_km
- Drift Result Id
- 55
- Observed Metric
- 0.312
- Baseline Version
- 1
- Current Sample Count
- 93
- Baseline Sample Count
- 218
View raw evidence JSON
{
"method": "PSI",
"details": {
"epsilon": 0.000001,
"baseline_bins": [
1.543999958038,
2.255999994278,
3.75448,
5,
7.379999876022,
10,
13.735,
27.470000457764,
51.83
],
"location_shift": {
"p95_shift": -35.02895000000001,
"mean_shift": -1.921226204505757,
"current_p95": 74.19999999999999,
"baseline_p95": 109.22895,
"current_mean": 18.552250567449548,
"median_shift": -1.4763998760223407,
"baseline_mean": 20.473476771955305,
"current_median": 5.9036,
"baseline_median": 7.379999876022341,
"normalized_median_shift": -0.10742004302737096
},
"warning_threshold": 0.15,
"current_distribution": [
0.043010752688172046,
0.07526881720430108,
0.17204301075268819,
0.11827956989247312,
0.15053763440860216,
0.010752688172043012,
0.13978494623655913,
0.07526881720430108,
0.15053763440860216,
0.06451612903225806
],
"baseline_distribution": [
0.10091743119266056,
0.10091743119266056,
0.10091743119266056,
0.0871559633027523,
0.11009174311926606,
0.08256880733944955,
0.11467889908256881,
0.10091743119266056,
0.10091743119266056,
0.10091743119266056
]
},
"threshold": 0.3,
"column_name": "depth_km",
"drift_result_id": 55,
"observed_metric": 0.31201573041501257,
"baseline_version": 1,
"current_sample_count": 93,
"baseline_sample_count": 218
}Blast radius
Downstream assets captured when this incident was evaluated.
Quality APIAPI · distance 2
dataset:earthquake-eventsprocess:quality-usgsapi:quality
Quality DashboardDASHBOARD · distance 3
dataset:earthquake-eventsprocess:quality-usgsapi:qualityui:quality-dashboard
Lifecycle
Chronological state transitions recorded for this incident.
8 events
- OPENED
Earthquake events evaluation error depth_km PSI drift quality rule. Observed: none. Expected: none.
- OBSERVED AGAIN
Earthquake events depth_km PSI drift detected. Observed metric: 1.0399943773399245; threshold: 0.3.
- OBSERVED AGAIN
Earthquake events depth_km PSI drift detected. Observed metric: 1.0858209050929961; threshold: 0.3.
- OBSERVED AGAIN
Earthquake events depth_km PSI drift detected. Observed metric: 1.1062721849592447; threshold: 0.3.
- OBSERVED AGAIN
Earthquake events depth_km PSI drift detected. Observed metric: 1.1012824398969638; threshold: 0.3.
- OBSERVED AGAIN
Earthquake events depth_km PSI drift detected. Observed metric: 1.0586976152323846; threshold: 0.3.
- OBSERVED AGAIN
Earthquake events depth_km PSI drift detected. Observed metric: 0.31201573041501257; threshold: 0.3.
- RESOLVED
depth_km drift recovered.
AI Incident Copilot
Optional explanatory context based on the same persisted evidence. It cannot change incident state.
Optional · non-authoritative
FALLBACKdeterministic-fallback · deterministic-rca-v1
Deterministic OpenDQ analysis identifies distribution shift as the leading explanation with high confidence.
This explanation follows the persisted deterministic RCA result. The leading cause is distribution shift; the AI provider was not used or was unavailable.
Evidence highlights
drift-result:55{"column": "depth_km", "method": "PSI", "metric": 0.31201573041501257, "status": "DRIFT", "threshold": 0.3}
Suggested investigation
- Compare the current distribution with the stored baseline and inspect the affected column.
Uncertainties
No additional uncertainties recorded.
Prompt incident-copilot-v1 · generated 9/6/2026, 10:54:42 AM · new analysis