Latest revision 19 July 1999

                Lost Data on TJDs 11354-11359

 TJD 11354 = 25 June 1999
 TJD 11359 = 30 June 1999

Because of high gain antenna problems, the normal data, i.e., production
or 32-kilobit data, from early on TJD 11354 through late on TJD 11359
were irretrievably lost.  Gap data, i.e., OBC or 1-kilobit data, were
received during that period.  In fact, toward the end of that period,
much more gap data were received than is normally the case.

The normal data ended at TJD/SoD = 11354/3716;
trigger no. 7619 occurred at TJD/SoD = 11354/1473.

The normal data resumed at TJD/SoD = 11359/72432; however, only 697
packets were received, ending at TJD/SoD = 11359/73857.  The 697
packets were all DUMP packets; no HER, SHER, or burst-type data were
received.  Apparently, because the spacecraft and/or BATSE had been
configured to allow BATSE to receive more gap data than normal, the
burst readout schedule had been suspended.  Therefore, during the
period of reception of normal data on TJD = 11359, a suspended trigger
readout was in progress.  According to the housekeeping data, the
trigger number was 7624.

Full reception of normal data resumed on TJD = 11360; some of the
burst-type data files for trigger no. 7624 were read out in the
dataset for TJD = 11360.

Trigger no. 7624 occurred at TJD/SoD = 11359/41140; it was a solar
flare which overwrote an earlier trigger (as shown by the auxiliary
times in the STTE_DATA.7624 file which contained only the last two
boards of the total of four STTE boards).  The earlier trigger
occurred at approximately TJD/SoD = 11358/48190 according to the
auxiliary times in the STTE_DATA.7624 file.

Effectively all data for triggers no. 7620-7623 were lost (except
for whatever trigger's data were included in the STTE_DATA.7624 file,
which was probably 7623 but could have been an even earlier trigger
in the case of a double overwrite).