SPACI score report for 1sht in ASTRAL 1.67:

PDB Entry: 1sht
SPACI score: 0.55
AEROSPACI score: 0.55

Experiment type: XRAY
Resolution: 1.81
R-factor: 0.151
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 1
WCK1 WHAT_CHECK Packing: 0.386
WCK2 WHAT_CHECK Ramachandran: -0.542
WCK3 WHAT_CHECK Chi angles: 0.383
WCK4 WHAT_CHECK Backbone: -7.083

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).