BAT Effective Area Curves

BAT Cal Memo 2002-03-05

05 Mar 2002

C. Markwardt

Here are the BAT Effective area curves, as derived from GRMC simulations of the detector plane.

The meanings are:

• "No Mask" - the area of all BAT detectors as a function of energy, with no mask in front of the array.
• "Mask" - the area of BAT detectors, after subtracting the absorption of the mask tiles.
• "Modulated" - the area of the BAT detectors which is sensitive to imaging of sources. This is effectively "No Mask" minus "Mask". For the purposes of the plot, the "Modulated" curve has been reduced by about 5% for cosmetic reasons. In the data file below however, no reduction has been applied.

Here is a data files with the same data.

• effarea_all.dat - All three effective area curves.
• effarea_all.sav - Same, in IDL SAVE format.
• full_modarea2.ps - Above figure in Postscript format

The columns are:

(1) Energy (kev); 
(2) Area (no mask); 
(3) Area (mask)
(4) Area (modulated)
(areas in cm^2)