Completeness simulation for the MIR-S and MIR-L channels. Solid and dashed lines represent the completeness calculated with the positive and negative images, respectively. For these cases, we assume that artificial sources have a flat spectrum in f_ν. The dot-dashed line in the upper panel indicates the completeness for red sources (see text in detail), where we adopted the average of 7, 9, and 11 μm flux for red sources. The vertical dashed lines indicate 5σ sensitivity in Wada et al. (2008) at S9W and L18W bands for MIR-S and MIR-L, respectively.