This page lists the flux from each calibration lamp in a 300 ms exposure with the ESI PXL guider.

Filter Xe Hg Qz
B 100 2,000 (sat)
R 200 (sat) (sat)
Clear 9,000 (sat) (sat)
Glass 9,000 (sat) (sat)
I 8,000 3,000 (sat)
ND_1 1,000 5,000 (sat)
V 100 7,000 (sat)