Use cheta not Ska.engarchive

Author: taldcroft

models/acisfp/calc_model.py

@@ -8,8 +8,8 @@
 """
 
 import xija
-import Ska.engarchive.fetch_eng as fetch_eng
-from Ska.Matplotlib import plot_cxctime
+from cheta import fetch_eng
+from ska_matplotlib import plot_cxctime
 
 start = '2012:001'
 stop = '2012:005'

xija/model.py

@@ -366,12 +366,12 @@ def fetch(self, msid, attr="vals", method="linear"):
         datestop = DateTime(self.tstop + tpad).date
         logger.info("Fetching msid: %s over %s to %s" % (msid, datestart, datestop))
         try:
-            import Ska.engarchive.fetch_sci as fetch
+            import cheta.fetch_sci as fetch
 
             tlm = fetch.MSID(msid, datestart, datestop, stat="5min")
             tlm.filter_bad_times()
         except ImportError:
-            raise ValueError("Ska.engarchive.fetch not available")
+            raise ValueError("cheta.fetch not available")
         if tlm.times[0] > self.tstart or tlm.times[-1] < self.tstop:
             raise ValueError(
                 "Fetched telemetry does not span model start and "