SPACI score report for 2xaq in ASTRAL 2.07:

PDB Entry: 2xaq
SPACI score: 0.12
AEROSPACI score: 0.12

Experiment type: XRAY
Resolution: 3.2
R-factor: 0.24324
PCK1 PROCHECK Ramachandran: 2
PCK2 PROCHECK Chi-1 angle: 3
PCK3 PROCHECK H-bonds: 3
WCK1 WHAT_CHECK Packing: -2.218
WCK2 WHAT_CHECK Ramachandran: -6.137
WCK3 WHAT_CHECK Chi angles: -6.052
WCK4 WHAT_CHECK Backbone: 2.451

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).