Fix delay claculation in DSSC1module.py

DSSC1module.py

@@ -106,7 +106,7 @@ class DSSC1module:
         except:
             self.delay_mm = 0*self.nrj
         self.t0 = t0
-        self.delay_ps = tb.positionToDelay(self.delay_mm, origin=self.t0)
+        self.delay_ps = tb.positionToDelay(self.delay_mm, origin=self.t0, invert=True)
                     
     def collect_dssc_module_file(self):
         """ Collect the raw DSSC module h5 files.