SPACI score report for 1a1i in ASTRAL 2.08:

PDB Entry: 1a1i
SPACI score: 0.58
AEROSPACI score: 0.58

Experiment type: XRAY
Resolution: 1.6
R-factor: 0.191
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -3.349
WCK2 WHAT_CHECK Ramachandran: -0.102
WCK3 WHAT_CHECK Chi angles: 0.051
WCK4 WHAT_CHECK Backbone: 3.376

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).