X-ray light curves synthesized from the HD models in the [0.5, 2] keV (upper panels) and [2, 10] keV (lower panels) energy bands. Left panels: comparison between two models with different explosion energies (Runs 10 and 11). Right panels: comparison between two models with different ejecta masses (Runs 12 and 13). The dotted, dashed, and dot-dashed lines show the contributions to the total emission from the shocked ejecta, shocked disk material, and shocked CBM (EDE and RG wind) plasma, respectively.