SPACI score report for 1sqp in ASTRAL 2.04:

PDB Entry: 1sqp
SPACI score: 0.19
AEROSPACI score: 0.19

Experiment type: XRAY
Resolution: 2.7
R-factor: 0.264
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 3
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -2.031
WCK2 WHAT_CHECK Ramachandran: -2.954
WCK3 WHAT_CHECK Chi angles: -5.617
WCK4 WHAT_CHECK Backbone: 2.498

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).