Upper panel shows spectra in the dim phase (ϕ = 0.125–0.250) of 4U 1626−67 obtained with Suzaku XIS (FI: black crosses, BI: light gray crosses) and HXD (circles). Triangles denote the reproducibility of NXB for HXD-PIN. Histograms in the upper panel are the best-fit by NPEX continuum ( A _p = 0). The lower three panels show residuals, χ, when fitting by (a) NPEX ( A _p = 0) continuum-only, (b) NPEX ( A _p = 0) with GABS model, and (c) NPEX ( A _p = 0) and Gaussian models.