Comparison of PHINOR (blue dotted), BGDLIXA (dark green dashed), and BGDLIXE (light green dashed-dotted) background model for viewing period 1.0 and the energy band 1–3 MeV to the DRE event distribution (red solid). The left panel shows the distribution of χ values, obtained by summing overall ψ and , the middle panel shows the distribution of ψ values, obtained by summing over all χ and , and the right panel shows the distribution of values, obtained by summing overall χ and ψ.