Spacetime (﹩{\rm{log}}r-t﹩) diagram of the magnetic field parity (C(U^D, U^Q); see Equations (19)–(20) in runs HS (panel (a)) and NS (panel (b)), where 1, −1, and 0 indicate dipole-like/odd parity, quadrupole-like/even parity, and mixed parity, respectively. By late times, the disk is odd at r ≲ 200 rg and even at larger radii in both runs. We have also marked the time when our radiation module is activated with a black line.