Flux fractions distributed into concentric rings around the origin pixels by the PSF of the cos(θ) ∈ (0.9, 1.0] incidence direction bin for FRONT and BACK events and selected energy bins. Ring order 0 corresponds to the origin pixel itself, ring order 1 to the eight pixels surrounding it, and so forth. Table B.1 provides the average δθ values of the pixels in the rings. Flux fractions are shown on a logarithmic scale from 10⁻⁶ to 1.0.