Energy dispersion format¶
The format to store full-enclosure energy dispersion (see Energy Dispersion) is the following:
EDISP_2D¶
The energy dispersion information is saved as a BINTABLE HDU with the following required columns.
Columns:
ENERG_LO
,ENERG_HI
– ndim: 1, unit: TeV- True energy axis
MIGRA_LO
,MIGRA_HI
– ndim: 1, unit: dimensionless- Energy migration axis (defined above)
THETA_LO
,THETA_HI
– ndim: 1, unit: deg- Field of view offset axis (see Field of view)
MATRIX
– ndim: 3, unit: dimensionless- Energy dispersion \(dP/d\mu\), see Energy Dispersion.
Recommended axis order: ENERGY
, MIGRA
, THETA
Header keywords:
As explained in HDU classes, the following header keyword should be used to declare the type of HDU:
HDUDOC
= ‘https://github.com/open-gamma-ray-astro/gamma-astro-data-formats’HDUVERS
= ‘0.3’HDUCLASS
= ‘GADF’HDUCLAS1
= ‘RESPONSE’HDUCLAS2
= ‘EDISP’HDUCLAS3
= ‘FULL-ENCLOSURE’HDUCLAS4
= ‘EDISP_2D’
Example data file: TODO