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Calibration Access and Data Handbook

Description

There is one extension per filter, and one extension containing the common energy bins data. The filter extensions include a region expression, to cover cases where we know there are spatial variations, and the transmission values corresponding to each energy bin datum.

The CCF contains the following tables:

FILTER-THIN1:

Thin1 filter transmission values. Accessed by :

• CAL_getFilterTransmission(): Retrieve filter transmission data as a function of energy for the THIN1 filter; the function exists in two flavors the second of which integrates the efficiency curve over a specified energy range

Attributes:

None.

Columns:

REGION:

The description of the region in which the transmission values are valid compliant with the selectlib spatial selection (in TELCOORD coordinates)

TRANSMISSION:

vector column with transmission efficiency values in the range [0, 1]; index corresponds to energy axis bins in table EBINS.

FILTER-THIN2:

Thin2 filter transmission values. Accessed by :

• CAL_getFilterTransmission(): Retrieve filter transmission data as a function of energy for the THIN1 filter; the function exists in two flavors the second of which integrates the efficiency curve over a specified energy range

Attributes:

None.

Columns:

REGION:

The description of the region in which the transmission values are valid.

TRANSMISSION:

vector column with transmission efficiency values in the range [0, 1]; index corresponds to energy axis bins in table EBINS.

FILTER-MEDIUM:

Medium filter transmission values. Accessed by :

• CAL_getFilterTransmission(): Retrieve filter transmission data as a function of energy for the THIN1 filter; the function exists in two flavors the second of which integrates the efficiency curve over a specified energy range

Attributes:

None.

Columns:

REGION:

The description of the region in which the transmission values are valid.

TRANSMISSION:

vector column with transmission efficiency values in the range [0, 1]; index corresponds to energy axis bins in table EBINS.

FILTER-THICK:

Thick filter transmission values. Accessed by :

• CAL_getFilterTransmission(): Retrieve filter transmission data as a function of energy for the THIN1 filter; the function exists in two flavors the second of which integrates the efficiency curve over a specified energy range

Attributes:

None.

Columns:

REGION:

The description of the region in which the transmission values are valid.

TRANSMISSION:

vector column with transmission efficiency values in the range [0, 1]; index corresponds to energy axis bins in table EBINS.

FILTER-OPEN:

Open filter transmission values. Accessed by :

• CAL_getFilterTransmission(): Retrieve filter transmission data as a function of energy for the THIN1 filter; the function exists in two flavors the second of which integrates the efficiency curve over a specified energy range

Attributes:

None.

Columns:

REGION:

The description of the region in which the transmission values are valid.

TRANSMISSION:

vector column with transmission efficiency values in the range [0, 1]; index corresponds to energy axis bins in table EBINS.

EBINS:

Defines the common energy bin structure. Accessed by :

• CAL_getFilterTransmission()

Attributes:

None.

Columns:

ENERGY:

vector column with energy values in eV defining energy axis on which transmission data are defined; length must match length of TRANSMISSION column in preceding tables.