SPACI score report for 1nz7 in ASTRAL 2.04:

PDB Entry: 1nz7
SPACI score: 0.34
AEROSPACI score: 0.34

Experiment type: XRAY
Resolution: 2.4
R-factor: 0.194
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -1.59
WCK2 WHAT_CHECK Ramachandran: -0.767
WCK3 WHAT_CHECK Chi angles: -1.88
WCK4 WHAT_CHECK Backbone: 0.276

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).