Health is a one-screen answer to how your detection behaves. The five numbers at the top compare the window with the one before it: detections, average speed with the slowest five percent, errors with the provider that causes most of them, cost per detection and the share of content flagged.
The confidence chart groups scores into ten bands from 0 to 1 and draws the threshold where a verdict flips. Bars close to the threshold are the unsure ones. If a large share of your verdicts sits there, the detector is often guessing, and that is worth knowing before you trust its answers.
Detectors agree shows what happened when two providers checked the same file. A low agreement rate tells you that at least one of them is wrong more often than you think.
The by-detector table lists every check and provider with its trend: steady, errors up, drift (the flag rate moved a lot compared with the window before) or new. Forensic and re-upload checks can appear there as view only; Cockpit never changes them.