exptest¶
-
gammapy.time.
exptest
(time_delta)[source]¶ Compute the level of variability for a certain period of time.
The level of variability is quantified by
mr
, as defined in Prahl (1999).For constant rate events, it follows a standard normal distribution, i.e. it can be used directly as the significance of variability.
For example usage, see Variability test.
Parameters: - time_delta : array-like
Time differences between consecutive events
Returns: - mr : float
Level of variability
References
[1] Prahl (1999), “A fast unbinned test on event clustering in Poisson processes”, Link