SPACI score report for 1a3w in ASTRAL 2.05:

PDB Entry: 1a3w
SPACI score: 0.18
AEROSPACI score: 0.18

Experiment type: XRAY
Resolution: 3
R-factor: 0.218
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 4
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -1.995
WCK2 WHAT_CHECK Ramachandran: -5.01
WCK3 WHAT_CHECK Chi angles: -6.97
WCK4 WHAT_CHECK Backbone: 1.558

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).