SPACI score report for 1r9s in ASTRAL 2.07:

PDB Entry: 1r9s
SPACI score: -0.03
AEROSPACI score: -0.03

Experiment type: XRAY
Resolution: 4.25
R-factor: 0.349
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 3
WCK1 WHAT_CHECK Packing: -2.003
WCK2 WHAT_CHECK Ramachandran: -5.959
WCK3 WHAT_CHECK Chi angles: -3.367
WCK4 WHAT_CHECK Backbone: -1.375

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).