class rubin_sim.maf.metrics.BruteOSFMetric(metric_name='BruteOSFMetric', exp_time_col='visitExposureTime', mjd_col='observationStartMJD', maxgap=10.0, fudge=0.0, **kwargs)

Bases: BaseMetric

Assume I can’t trust the slewtime or visittime colums. This computes the fraction of time the shutter is open, with no penalty for the first exposure after a long gap (e.g., 1st exposure of the night). Presumably, the telescope will need to focus, so there’s not much a scheduler could do to optimize keeping the shutter open after a closure.

Methods Summary

run(data_slice[, slice_point])

Calculate metric values.

Methods Documentation

run(data_slice, slice_point=None)

Calculate metric values.


Values passed to metric by the slicer, which the metric will use to calculate metric values at each slice_point.

slice_pointdict or None

Dictionary of slice_point metadata passed to each metric. E.g. the ra/dec of the healpix pixel or opsim fieldId.

metricValue: int float or object

The metric value at each slice_point.