GammaLib and ctools - A software framework for the analysis of astronomical gamma-ray data

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Table 2

Benchmark of ctools unbinned, binned and stacked analysis pipelines for an observation duration of 32 h as function of the spectral and spatial model.

Model	Unbinned/stacked	Unbinned		Binned		Stacked
	crossover	full	ctlike	full	ctlike	full	ctlike
	duration (h)	(s)	(s)	(s)	(s)	(s)	(s)

Power law	30	51	31	53	37	48	29
Power law 2	25	53	33	57	40	49	29
Broken power law	7	201	183	76	60	54	35
Exponentially cut-off power law	22	65	40	60	39	54	30
Super exponentially cut-off power law	6	242	166	117	51	102	31
Log parabola	7	204	125	106	38	108	34
File function	30	50	31	55	39	51	31
Node function	33	48	30	57	41	53	35

Point source	30	97	78	127	111	89	70
Isotropic diffuse source	22	590	478	3515	3407	469	358
Sky map source (4° × 9° map)	0.5	613	595	4434	4419	43	25
Map cube source (1° × 1° map)	22	922	900	5053	5043	662	640
Radial disk source (r = 0.2°)	2	3289	3268	592	574	320	299
Radial Gaussian source (σ = 0.2°)	15	19 089	19 068	3404	3386	2683	2661
Radial shell source (θ_in = 0.3°, θ_out = 0.4°)	3	32 530	32 509	8439	8420	1327	1305
Elliptical disk source (a = 0.2°, b = 0.4°)	6	11 864	11 840	2324	2302	2893	2869
Elliptical Gaussian source (a = 0.2°, b = 0.4°)	3	154 337	154 316	6559	6540	9904	9882

Notes. The first column gives the model type (including the size parameters of the spatial model components), the second columns indicates the observation duration from which on a stacked analysis is faster than an unbinned analysis. The remaining numbers give the spent processor time in seconds. Processor times are quoted for the full pipeline and for the ctlike maximum likelihood fitting step only.

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