SPACI score report for 3gzy in ASTRAL 2.04:

PDB Entry: 3gzy
SPACI score: 0.63
AEROSPACI score: 0.63

Experiment type: XRAY
Resolution: 1.62
R-factor: 0.118
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -1.44
WCK2 WHAT_CHECK Ramachandran: -1.165
WCK3 WHAT_CHECK Chi angles: -0.61
WCK4 WHAT_CHECK Backbone: 2.348

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).