Time evolution of the X-ray continuum flux, polarization degree, and polarization position angle in the 1−5 keV (top figure), 7−12 keV (middle), and 20−50 keV band (bottom) resulting from an occultation event. The eclipsing cloud covers 50% of the extended continuum source, and three different hydrogen column densities are considered for the gas (black: 10²¹ cm^-2; red: 10²³ cm^-2; and orange: 10²⁵ cm^-2). Since that P_nH = 10²⁵ cm^-2 is too small, it does not appear in the top figure (see text).