SPACI score report for 1ibk in ASTRAL 2.06:

PDB Entry: 1ibk
SPACI score: 0.13
AEROSPACI score: 0.13

Experiment type: XRAY
Resolution: 3.31
R-factor: 0.229
PCK1 PROCHECK Ramachandran: 2
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 3
WCK1 WHAT_CHECK Packing: -3.076
WCK2 WHAT_CHECK Ramachandran: -6.913
WCK3 WHAT_CHECK Chi angles: -3.731
WCK4 WHAT_CHECK Backbone: -2.485

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).