Per-consumer backlog on JetStream. A consumer falling behind here means data is queued and delayed, not lost or wrong — but the longer it sits, the staler live charts and API responses get for that feed. Auto-refreshes every 15s.

@PipDataRobot's own health: whether it can reach Telegram through the relay, its outgoing-message backlog, and every alert / watchlist event / scheduled report of the last 24 h followed through to delivery. Lost = recorded but never queued (must be 0). Late = delivered more than 10 min after it fired.