from datetime import datetime, timedelta
from typing import Dict, List
def _ts(minutes_ago: int) -> str:
return (datetime.utcnow() - timedelta(minutes=minutes_ago)).strftime("%Y-%m-%d %H:%M")
REALTIME_METRICS: List[Dict] = [
{
"equipment_id": "ETCH-01",
"process_type": "etch",
"cpk": 1.85,
"yield_pct": 98.4,
"uptime_pct": 92.1,
"last_maintenance": _ts(720),
},
{
"equipment_id": "CVD-02",
"process_type": "deposition",
"cpk": 1.62,
"yield_pct": 97.3,
"uptime_pct": 95.5,
"last_maintenance": _ts(1440),
},
{
"equipment_id": "LITHO-03",
"process_type": "lithography",
"cpk": 1.72,
"yield_pct": 99.1,
"uptime_pct": 90.4,
"last_maintenance": _ts(360),
},
]
SPC_FLAGS: List[Dict] = [
{
"parameter": "CD@Center",
"equipment_id": "LITHO-03",
"chart_type": "xbar",
"status": "in_control",
"notes": "All points within 1.2σ; no runs detected",
},
{
"parameter": "Overlay X",
"equipment_id": "LITHO-03",
"chart_type": "sigma",
"status": "warning",
"notes": "2 of last 3 points exceeded 2σ; monitor closely",
},
{
"parameter": "Removal Rate",
"equipment_id": "CMP-01",
"chart_type": "range",
"status": "out_of_control",
"notes": "One point beyond UCL; investigate slurry flow",
},
]
