SPACI score report for 4asu in ASTRAL 2.06:

PDB Entry: 4asu
SPACI score: 0.26
AEROSPACI score: 0.26

Experiment type: XRAY
Resolution: 2.6
R-factor: 0.24711
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -0.998
WCK2 WHAT_CHECK Ramachandran: -1.512
WCK3 WHAT_CHECK Chi angles: -1.809
WCK4 WHAT_CHECK Backbone: 3.061

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).