Section \[subsection.suz\_chap\_fb\] and this additional SWCX filtering, our sample includes 58 of the original 143 observations.

Spectral Modeling {#subsection.spec_mod_chap_fb}
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This section outlines our spectral fitting procedure, including the response files used, our spectral model, and resultant data products. We extracted spectra in the 0.4–5.0 keV band, which is broad enough to model the known SXRB emission sources. Each observation had its own particle spectrum, or non X-ray background (NXB) spectrum, and response files. We used `Xspec` version 12.9.0 for all spectral fitting, where we used the Cash statistic as our fit statistic [@cash79]. Figure \[figure.spectrum\_chap\_fb\] shows an example observed spectrum and best-fit multi-component model. Our final result includes and line intensities for each observation.

We generated response matrices and auxiliary response files using standard *Suzaku* scripts. The script `xisrmfgen` was used to generate response matrices (RMF files) for each observation. We used the ray-tracing program `xissimarfgen` to generate ancillary response files (ARFs) assuming a uniformly emitting source and a 20$\arcmin$ radius circle for a simulated source region. The size of the source region acts as a normalization in our spectral fit values.

Each observation has an NXB spectrum collected by *Suzaku* observations of the Earth at night. We generated 