AMPEL workflows for LSST: Modular and reproducible real-time photometric classification

Open Access

Table 1

AMPEL operations are divided into four execution layers, each for a specific kind of task.

Tier	Operation
T0	Filters large alert stream, selecting only transients of interest.
T1	Combines alert history with existing database or combine transient information of different instruments.
T2	Evaluates transient properties (light-curve fitting, typing...).
T3	Estimates sample properties and reacts (ex: assign priorities to transients for spectroscopic triggers).

Notes. A normal distribution fit to the host (u−g) colors of the training sample yields the location and scale provided here.

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