Fig. 11

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Comparison between XSPEC spectral fitting (fit statistic minimization) and SBI-NPE. The initial parameters of the XSPEC fits are the input model parameter (top panel), a set of parameters generated from the restricted prior (middle panel), and a set of parameters generated from the initial prior (bottom panel). The y-scale is the same for the three panels. Outliers away from the red line are due to XSPEC becoming trapped in a local false minimum.
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