streak_persistence

acstools.utils_findsat_mrt.streak_persistence(cutout, dx, streak_y0, streak_stdev, max_width=None, plot_streak=False)

Measure streak persistence across image.

The persistence is measured by breaking the trail into even chunks and trying to fit a Gaussian to a 1D cross-section from each chunk. Successful fits contribute to the persistence score.

Parameters:

cutoutndarray

Cutout of the trail. This should be the same cutout generated in filter_sources() so that the trail is aligned horizontally across the cutout.

dxint

Size of each chunk to be analyzed.

streak_y0float

y-coordinate of the trail derived from the analysis of its global cross-section.

streak_stdevfloat

Gaussian sigma value determined from the analysis of its global cross-section.

max_widthint, optional

Maximum allowed width for a trail to be considered robust. This should be the same as whatever was used in filter_sources(). The default is None.

plot_streakbool, optional

Set to turn on plotting. WARNING: THIS CAN GENERATE MANY PLOTS DEPENDING ON HOW MANY SECTIONS A TRAIL IS BROKEN INTO. The default is False.

Returns:

pscorefloat

Persistence score of the input trail.