The metadata checks are scored binary as simple OK / NOK flags per group. If any of the lowest level checks are NOK, then
the corresponding group will also be scored NOK.
The scoring of the time-series quality checks is generally based on 2 different mechanisms: time- and count-based.
- For some check that return event-frames, i.e. start-stop time-frames in which the check returns (potential) issues,
the score corresponds to the ratio between the total time of these event-frames and the total time being analyzed.
- For checks that do not return event-frames and certain that do,
the score is given as the total number of points where the check
returns (potential) issues divided by the total number of points in the time being analyzed.