There are some that are 1080i, but most are 1080p. A test disc would include 1080i material to test the interlacing capabilities of your display or player.
Full and use whatever setting your source requires to add its own (black) masking
1. Set the Kuro to
4:3 and access the service menu to alter the color of its masking bars
2. Set the Kuro to
Stephen bourque - Detailed Calibration Summary.pdf 70.755859375k . file