SPACI score report for 1aaz in ASTRAL 2.08:

PDB Entry: 1aaz
SPACI score: 0.43
AEROSPACI score: 0.43

Experiment type: XRAY
Resolution: 2
R-factor: 0.21
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 1
WCK1 WHAT_CHECK Packing: -1.024
WCK2 WHAT_CHECK Ramachandran: -0.219
WCK3 WHAT_CHECK Chi angles: -2.557
WCK4 WHAT_CHECK Backbone: 0.637

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).