SPACI score report for 2zz2 in ASTRAL 2.07:

PDB Entry: 2zz2
SPACI score: 0.64
AEROSPACI score: 0.64

Experiment type: XRAY
Resolution: 1.53
R-factor: 0.161
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -0.738
WCK2 WHAT_CHECK Ramachandran: -1.133
WCK3 WHAT_CHECK Chi angles: 0.626
WCK4 WHAT_CHECK Backbone: 3.209

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).