SPACI score report for 1n3z in ASTRAL 2.01:

PDB Entry: 1n3z
SPACI score: 0.55
AEROSPACI score: 0.55

Experiment type: XRAY
Resolution: 1.65
R-factor: 0.186
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -0.642
WCK2 WHAT_CHECK Ramachandran: -0.524
WCK3 WHAT_CHECK Chi angles: -0.927
WCK4 WHAT_CHECK Backbone: 0.339

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).