uvex_transients.surveys.base.SurveySchedule.compute_visit_count_cdf#

SurveySchedule.compute_visit_count_cdf(start_time: Time | None = None, end_time: Time | None = None, nside: int | None = None, order: str | None = None) → tuple[ndarray, ndarray][source]#

Compute the complementary cumulative visit-count distribution.

The returned fraction gives the fraction of observed HEALPix pixels receiving at least a given number of visits.

Parameters:

  • start_time (Time, optional) – Optional time range over which to compute visit counts.

  • end_time (Time, optional) – Optional time range over which to compute visit counts.

  • nside (int, optional) – HEALPix resolution parameter, or None to use config["healpix.default_nside"].

  • order (str, optional) – HEALPix ordering scheme, either "nested" or "ring", or None to use config["healpix.default_order"].

Returns:

  • visit_counts (numpy.ndarray) – Visit-count thresholds 1, 2, ..., N.

  • fractions (numpy.ndarray) – Fraction of observed HEALPix pixels receiving at least the corresponding number of visits.