SPACI score report for 1xek in ASTRAL 2.06:

PDB Entry: 1xek
SPACI score: 0.24
AEROSPACI score: 0.24

Experiment type: XRAY
Resolution: 2.3
R-factor: 0.197
PCK1 PROCHECK Ramachandran: 3
PCK2 PROCHECK Chi-1 angle: 4
PCK3 PROCHECK H-bonds: 3
WCK1 WHAT_CHECK Packing: -3.903
WCK2 WHAT_CHECK Ramachandran: -6.739
WCK3 WHAT_CHECK Chi angles: -5.538
WCK4 WHAT_CHECK Backbone: -4.254

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).