Add note on TIME sort in event list docstring
@@ -35,6 +35,10 @@ class EventListBase:
- ``RA``, ``DEC`` - ICRS system position (deg)
- ``ENERGY`` - Energy (usually MeV for Fermi and TeV for IACTs)
+ Note that ``TIME`` is usually sorted, but sometimes it is not.
+ E.g. when simulating data, or processing it in certain ways.
+ So generally any analysis code should assume ``TIME`` is not sorted.
+
Other optional (columns) that are sometimes useful for high-level analysis:
- ``GLON``, ``GLAT`` - Galactic coordinates (deg)
