SPACI score report for 3a7t in ASTRAL 2.05:

PDB Entry: 3a7t
SPACI score: 0.58
AEROSPACI score: 0.58

Experiment type: XRAY
Resolution: 1.75
R-factor: 0.15
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: 3.902
WCK2 WHAT_CHECK Ramachandran: -0.492
WCK3 WHAT_CHECK Chi angles: 0.502
WCK4 WHAT_CHECK Backbone: 2.101

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).