SPACI score report for 1xei in ASTRAL 1.75:

PDB Entry: 1xei
SPACI score: 0.36
AEROSPACI score: 0.36

Experiment type: XRAY
Resolution: 2.1
R-factor: 0.188
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 3
PCK3 PROCHECK H-bonds: 3
WCK1 WHAT_CHECK Packing: -2.52
WCK2 WHAT_CHECK Ramachandran: -3.388
WCK3 WHAT_CHECK Chi angles: -4.854
WCK4 WHAT_CHECK Backbone: -1.402

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).