SPACI score report for 1iiz in ASTRAL 2.06:

PDB Entry: 1iiz
SPACI score: 0.28
AEROSPACI score: 0.28

Experiment type: XRAY
Resolution: 2.4
R-factor: 0.231
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 3
WCK1 WHAT_CHECK Packing: -1.941
WCK2 WHAT_CHECK Ramachandran: -3.152
WCK3 WHAT_CHECK Chi angles: -2.474
WCK4 WHAT_CHECK Backbone: -1.255

Note: Here are links to pages about PROCHECK and WHAT_CHECK.

Here is the full WHAT_CHECK report on this protein (linked from the WHAT_CHECK site).