SPACI score report for 1e28 in ASTRAL 1.75:

PDB Entry: 1e28
SPACI score: 0.3
AEROSPACI score: 0.3

Experiment type: XRAY
Resolution: 3
R-factor: 0.194
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -0.677
WCK2 WHAT_CHECK Ramachandran: -3.894
WCK3 WHAT_CHECK Chi angles: -2.564
WCK4 WHAT_CHECK Backbone: 0.421

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).