Each tile generated has a file name, defined by the base name specified during the setup of the Mosaic Generation module, and a tile ID. The ID with the suffix _1_1.pix represents the tile in the upper-leftmost corner of the area of interest; that is, it is in column 1 and row 1. The tile with the ID suffix _1_2.pix is the tile directly below that one; that is, column 1, row 2.
You can review the output tiles in CATALYST Professional Focus.
To review output mosaic tiles in Focus
The following figure shows a sample mosaic with four mosaic tiles open.

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