SPICY survey tiles marked on the IRC NEP-Wide S9W image (Lee et al. 2009; Kim et al. 2012). North is up and east is to the left. The NEP is marked with a small black circle, and the NEP-Deep survey field is indicated with a big magenta circle. Blue rectangles show approximate locations of individual tiles. The galaxies with detectable PAH features (the PAH galaxies; Sect. 2.3) and bright AGN candidates (Sect. 3.2.1) are marked with small red and blue circles, respectively.