GE- 3/31/97
E6 Science Data Losses
048-08:07 ---> 089-16:46; Lost TFs in brackets[.....] Changes in Bold
Time (GMT) DSS Reference RT Rcvd Events Comments Cause Array
TFs Ops
Lost from
Related?
PPT
048-22:42 43 DR# 37 35 The sta had to - Lost TFs S Yes
A01050 reboot the [57005->57041]
-> FSC,BTD, and 137 RTS & 5
049-01:27 FCD to recover Priority VCDUs
the DGT from a
FSC failure. - ***Recovered
TFs [57005 &
57006, 56009 ->
57041] from FSR
tape
re-processing
049-17:22 14 DR# 3 0 Power glitch - Lost TFs F No
G01080 at SPC10. [57152->57154]
-> 17:43 12 RTS VCDUs
050-19:16 43 DR# 4 0 No FSC cross - Lost TFs S Yes
A01054 correlation of [57419->57422]
-> 19:33 DSS42. No 12 RTS VCDUs
action was
taken to
achieve good
cross
correlation.
051-00:03 49 DR # 5 0 Bad router - Lost TFs S Yes
A01057 interface [57502->57506]
-> 00:20 between DSS49 20 RTS VCDUs
and SPC40. The
router was
reset to
restore the
interface.
051-00:23 49 DR# 4 0 Bad router - Lost TFs S Yes
A01057 interface [57508->57511]
-> 00:37 between DSS49 16 RTS VCDUs
and SPC40. The
router was
reset to
restore the
interface.
051-13:42 63 3 0 - Unknown - Lost TF U No
[57627] 63
-> 14:51 & - BRC 20-8bps
at 14:54 - Lost TF [
14 57628]
unrecoverable by
either DSS
- Lost TF
[57629] 14
10 RTS & 2
Priority VCDUs
051-20:23 43 DR# 2 0 - Missed the - Lost TFs U No
A01059 BRC 60-80bps [[57669 & 57670]
-> 20:30 8 RTS VCDUs
Europa
Encounter
occurred at
17:56
051-20:44 43 DR# 2 0 - The - Lost TFs PD No
A01058 scheduled [57679 & 57680]
-> 21:05 uplink 7 RTS & 1
transfer at Priority VCDUs
19:05 between
DSS14 & DSS43
was delayed 10
minutes. 6 TFs
were lost of
which 2
contained
non-fill tlm.
052-00:59 43 DR# 1 0 PCG tones, - Lost TF PD No
A01060 used for VLBI, [57738] 4 RTS
were turned VCDUs
on.
052-04:52 43 DR# 1 0 - Unknown - Lost TFs U No
A01059 [57789] 4 RTS
- BRC 60-32bps VCDUs
052-19:28 43 1 1 - Unknown - Lost TF U No
[57867] 4 RTS
- This is VCDUs
approximately
the same time
that the T-1
was released
by GSFC.
052-19:55 43 DR# 7 0 - The DGT T-1 - Lost TFs PN No
N42325 was released [57873->57879]
-> 20:16 to the carrier 28 RTS VCDUs
without
authorization
- The carrier
returned the
T-1 at 20:45z.
052-23:54 43 1 1 - LOS going - Lost TF PP No
1-way [57941] 1 RTS &
1 Priority VCDUs
- PWS fill not
scheduled
until 23:56z
054-20:29 43 1 0 Missed BRC - Lost TF U U
80->120bps. [58400] 4 RTS
VCDUs
Time (GMT) DSS Reference RT Rcvd Events Comments Cause Array
TFs Ops
Lost from
Related?
PPT
056-16:15 14 1 0 Missed the - Lost TF U No
first non-fill [58882] 2
transfer frame Priority VCDUs
after
egressing from
the Europa
occultation.
056-19:29 43 DR# 16 16 The EFT lan in - Lost TFs GCF No
N42372 the GCF of [58919 & 58920]
-> 20:43 BLDG 230 has a 8 RTS VCDUs
bad fiber
connector. The [58926 & 58927]
connector was 8 RTS VCDUs
replaced to
restore [58929 -> 58932]
operability 16 RTS VCDUs
and dataflow.
[58934 -> 58937]
16 RTS VCDUs
[58939 -> 58942]
16 PB VCDUs
057- 01:07 43 DR# 1 0 Unknown - Lost TF U U
A01075 [59031] 1 PB & 1
RTS VCDUs
057-17:53 14 1 1 - Unknown - Lost TF U No
[59190] 2 PB
- TMU drivers VCDUs
off
058-14:11 14 DR# 7 2 DSS14 was - Lost TFs W No
G01867 unable to go [59455 -> 59461]
-> 15:12 to point at 26 PB & 2
scheduled BOT Priority VCDUs.
due to high
winds. After ***TFs [59460 &
winds abated 59461]
the station receovered in
went to point PPT***
at 14:48z.
059-04:24 43 DR# 2 0 DSS49 went to - Lost TFs W Yes
A01082 stow due to [59680 & 59681]
-> 04:34 high winds and 8 PB VCDUs
the FSC
halted. The
FSC was
rebooted to
restore
operability.
059-13:50 14 1 1 Unknown - Lost TF U No
[59741] 4 PB
VCDUs
***Recovered in
the PPT***
060-14:04 14 DR# 3 1 Unknown - Lost TFs U No
G01875 [60038 -> 60040]
-> 14:45 11 PB & 1
Priority VCDUs
***TF [60040]
recovered in
PPT***
060-20:34 49 DR# 1 0 DSS49 to stow - Lost TF W Yes
A01086 due to high [60113] 4 PB
winds VCDUs
060-21:29 49 DR# 9 0 DSS49 to stow - Lost TFs W Yes
A01086 due to high [60137 -> 60142]
-> 21:42 winds 23 PB & 1
Priority VCDUs
21:45
- Lost TFs
-> 21:49 [60144 & 60145]
8 PB VCDUs
21:52
- Lost TF
[60147] 4 PB
VCDUs
060-22:01 43 DR# 16 0 Inclement - Lost TFs W No
A01088 weather- rain, [60150 -> 60165]
-> 22:55 and SNT > 30 K 62 PB & 2
Priority VCDUs
061-01:19 43 DR# 6 0 Inclement - Lost TFs W No
A01088 weather- rain, [60208 -> 60213]
-> 01:39 and SNT > 30 K 24 PB VCDUs
061-04:16 43 DR# 1 0 Lightning - Lost TF W No
A01089 strike [60260] 4 PB
disabled the VCDUs
Ultra-Cone
maser. The
maser was
reset to
restore to
operability.
061-17:29 14 1 1 Unknown - Lost TF U No
[60364] 4 PB
VCDUs
062-02:49 43 1 1 Unknown - Lost TF U No
[60535] 4 PB
VCDUs
063-19:10 43 DR# 3 3 The GTC was - Lost TFs S No
A01095 reset in an [60967 -> 60969]
-> 19:24 attempt to 12 PB VCDUs
restore 3-12G
DGT monitor.
The attempt
was
unsuccessful.
Time (GMT) DSS Reference RT Rcvd Events Comments Cause Array
TFs Ops
Lost from
Related?
PPT
063-19:51 43 DR# 3 3 The BTD halted - Lost TFs S No
A01095 operation and [60978 -> 60980]
-> 20:01 needed to be 11 PB & 1
reset after Priority VCDUs
the earlier
GTC reset to
restore
operability.
063-21:33 49 DR# 4 0 DSS49 to stow - Lost TFs W Yes
A01097 due to high [61019 -> 61024]
-> 21:43 winds from 15 PB & 1
063-21:30 to Priority VCDUs
064-01:25
064-20:04 49 DR# 1 0 - DSS49 was - Lost TF A Yes
A01099 unable to go [61286] 4 PB
to point due VCDUs
to unspecified
computer
problems.
- BRC 60-80bps
064-20:55 49 DR# 1 0 DSS49 to stow - Lost TF W Yes
A01101 due to high [61299] 4 PB
winds from VCDUs
20:53 to EOT
065-10:08 63 DR# 1 1 Unknown - Lost TF U No
L00923 [61404] 4 PB
VCDUs
066-04:21 43 DR# 14 0 - The Antenna - Lost TFs A Yes
A01104 Servo [61657 -> 61670]
-> 05:54 Controller at 53 PB & 2
DSS43 failed. Priority VCDUs
No restoral
prior to EOT
at 05:50z.
066-18:09 14 DR# 47 0 DSS14 utilized - Lost TFs PD No
N42464 the incorrect [61757 -> 61803]
-> 20:35 set of 184 PB & 4
predictions Priority VCDUs
for this
support; the
predictions
did not
include any
BRC's past the
BRC to 40bps.
068-05:11 43 1 1 Unknown - Lost TF U U
[62264] 3 PB & 1
Priority VCDUs
068-13:23 63 1 1 - Unknown - Lost TF U No
[62327] 4 PB
- BRC VCDUs
32->20bps
missed by
incoming DSS14
as well
069-18:44 43 DR# 2 0 - Unknown - Lost TFs SPA No
A01113 [62673 & 62674]
-> 18:51 - Below range 4 PB, 3 RTS, & 1
Pd/N0 at FSC Priority VCDUs
070-04:38 43 DR# 1 0 - Unknown - Lost TF U Yes
A01114 [62859] 4 PB
-BRC 60-40bps VCDUs
070-06:18 63 2 0 DSS63 acquired - Lost TF's U No
the downlink [62870 & 62871]
-> 06:41 after
conclusion the
scheduled PWS
fill
070-08:27 63 DR# 1 1 Unknown - Lost TF U No
L00928 [62882] 3 PB & 1
Priority VCDUs
070-19:52 43 DR# 35 0 The FSC - Lost TFs S Yes
A01115 halted. The [62986 -> 63020]
-> 221:12 station 139 PB & 1
rebooted the Priority VCDUs
FSC to restore
operability. *FSR tapes
requested***
071-19:35 42 DR# 3 0 The GTC halted - Lost TFs S Yes
A01118 and required a [63258 -> 63260]
-> 19:52 reboot to 12 PB VCDUs
restore to
operability.
071-21:28 49 DR# 2 0 Commercial - Lost TFs F Yes
A01123 power [63286 & 63287]
-> 21:42 interruption 7 PB & 1
to DSS49 Priority VCDUs
071-22:57 42 DR# 1 0 Unknown - Lost TF U Yes
A01124 [63299] 3 PB & 1
Priority VCDUs
071-23:52 49 70 1 0 DSS49 swapped - Lost TF F Yes
to diesel [63307] 3 PB & 1
power to Priority VCDUs
alleviate any
further
commercial
power
interruptions
Time (GMT) DSS Reference RT Rcvd Events Comments Cause Array
TFs Ops
Lost from
Related?
PPT
071-13:55 14 DR# 3 0 -The DGT at - Lost TFs U No
G01900 DSS14 was [63410 -> 63412]
-> 14:23 declared red 11 PB & 1
at BOT Priority VCDUs
(1315z).
- The restoral
action is
unknown at
this time.
072-03:15 43 DR# 6 0 - All TFs lost - Lost TFs SPA No
A01131 during rate [63600 & 63601,
->05:10 changes. This 63607, 63617&
would be 63618, 63626]
acceptable
considering 4 Priority VCDUs
that each rate
change
occurred
during, or
shortly after,
a burn period.
- rate change
losses:
80-60bps,
60-40bps, &
40-32bps
respectively.
072-11:56 63 DR# 1 0 - Lost rate - Lost TF SPA No
L00937 change during [63661] 1
burn period. Priority VCDU
- rate change
loss: 32-20bps
073-14:14 14 DR# 2 0 - Complex wide - Lost TF [63672 F No
G01907 power outage & 63673] 2
-> 14:31 priority VCDUs
073-16:48 14 DR# 2 0 -Unscheduled - Lost TFs F No
G01907 2-way mode [63690 & 63691]
-> 17:13 change due to 3 Priority VCDUs
earlier power
outage.
074-12:55 63 1 1 Unknown - Lost TF U No
[63948] 4 PB
VCDUs
074-17:54 43 DR# 7 0 MEC halted - Lost TF [63982 A Yes
A01133 operation. -> 63988] 27 PB
-> 18:21 Station went & 1 Priority
to computer VCDUs
mode for
antenna
movement.
075-05:45 63 DR# 3 3 The BTD halted - Lost TFs H No
L00946 operation and [64188 -> 64190]
the station 6 PB, 2
rebooted to Priority, & 1
restore RTS VCDUs
operability.
077-21:03 43 DR# 1 0 - Lost during - Lost TF U Yes
A01139 the rate [64942] 4 PB
change from VCDUs
120 to 80bps.
No other
obvious
activities
occurred
during that
timeframe.
- May be prdx
related.
078-01:53 43 DR# 1 0 FSR1 timed - Lost TF S Yes
A01140 out. No [65027] 4 PB
operator VCDUs
action was
necessary to
recover the
FSR.
078-06:05 63 DR# 7 0 The antenna - Lost TFs A No
L00953 went to brake [65076 -> 65084]
-> 07:04 due to "film 24 PB, 2 RTS, &
height alarm 2 Priority VCDUs
on pad #1".
The debris was
cleared
without
maintenance
intervention.
078-11:46 63 1 1 Unknown - Lost TF S No
[65126] 4 PB
VCDUs
078-13:16 14 DR# 1 1 - Unknown - Lost TF U No
G01936 [65136] 4 PB
- rate change VCDUs
20-32bps
078-16:56 14 DR# 1 1 - Unknown - Lost TF U No
G01937 [65164] 4 RTS
VCDUs
078-17:30 43 DR# 1 0 FSC carrier - Lost TF S Yes
A01142 spectrum [65169] 4 RTS
reflected all VCDUs
zeros. The
station
rebooted the
FSC to restore
operability.
079-18:56 43 1 0 - Unknown - Lost TF U Yes
[65509] 4 RTS
- DSS49 was VCDUs
entered into
the array 4
minutes and 23
seconds after
the rate
change from
80-120bps.
- Close out
pending
Time (GMT) DSS Reference RT Rcvd Events Comments Cause Array
TFs Ops
Lost from
Related?
PPT
079-21:30 43 DR# 1 0 - Unknown - Lost TF U Yes
A01148 [00036] 3 RTS &
- rate change 1 Priority VCDUs
80-120bps
080-12:02 63 DR# 1 1 - Unknown - Lost TF S No
L00959 [00234] 4 RTS
VCDUs
080-12:19 63 DR# 1 0 - Unknown - Lost TF U No
L00959 [00236] 3 RTS &
-rate change 1 Priority VCDUs
32-20bps
080-12:46 63 DR# 1 0 - Unknown - Lost TF [00238 U No
L00959 & 00239] 7 RTS &
- rate change 1 Priority VCDUs
20-32bps
081-18:25 43 DR# 1 1 - Unknown - Lost TF U Yes
A01156 [00649] 4 PB
- Missed rate VCDUs
change
80-120bps
081-19:34 43 DR# 40 40 - The FSC core - Lost TFs S Yes
A01155 process died [00679 -> 00718]
-> 20:49 at the rate 134 PB, 16 RTS,
change & 2 Priority
120-160bps. VCDUs.
The FSC was
power cycled ***Recovered
to restore from FSR tape
operability. reprocessing***
- **FSR tapes
requested**
081- 21:23 14 DR#G01950 2 0 - DSS14 was - Lost TFs PP Yes
scheduled [00734 & 00735]
-> 21:28 incorrectly, 8 PB VCDUs
they were
scheduled past
EOT.
- The FSC was
unable to
process the
two frames due
to predicted
vs. actual
supported
array
elements.
082-12:52 63 1 0 - Unknown - Lost TF U No
[00959] 4 RTS
- last valid VCDUs
TF @ 12:44 and
EOT at 13:00
- BR= 32bps
082-23:32 43 DR# 2 0 The FSR1 tone - Lost TF [01142 H Yes
A01159 rotator halted & 01143] 6 PB &
-> 23:36 operation. It 2 RS VCDUs
autonomously
restored
itself.
083-04:35 43 DR# 2 0 The FSC - Lost TF S Yes
A01160 halted. The [01245] 3 PB & 1
station was Priority VCDUs
unable to
restore prior
to EOT at
04:55.
- **FSR tapes
requested**
083-12:16 63 DR# 1 1 Unknown - Lost TF S No
L00946 [01296] 3 RTS &
1 Priority VCDUs
083-18:06 43 DR# 1 0 - Unknown - Lost TF U Yes
A01162 [01351] 4 PB
- Rate change VCDUs
80-120bps
083-19:05 43 DR# 76 75 - A bug within - Lost TFs S Yes
A01163 the FSC code [01377 -> 01453]
-> 21:26 was isolated 263PB, 36 RTS, &
by the DGT 4 Priority
Task. A point VCDUs.
build fix was
installed in
the FSC and
the frames
reprocessed.
Kim Simpson
has the
recovered
frames on
tape.
083-22:02 43 1 0 - Unknown - Lost TF U Yes
[01470] 4 PB
VCDUs
084-17:56 43 DR# 1 0 - Unknown - Lost TF U Yes
A01165 [01729] 4 PB
- rate change VCDUs
80-120bps
084-19:02 43 1 0 - This was a - Lost TF SPA No
scheduled fill [01759] 1 PB
period during VCDU
the rate
change of
120-160bps.
DSS43 acquired
the first TF
at 19:04 one
VCDU past the
scheduled two
TFs of fill.
Time (GMT) DSS Reference RT Rcvd Events Comments Cause Array
TFs Ops
Lost from
Related?
PPT
084-20:43 43 DR# 1 0 - Unknown - Lost TF U Yes
A011665 [01818] 4 PB
- rate change VCDUs
160-120bps
085-05:15 63 1 1 - Unknown - Lost TF S No
[02003] 1
- This frame Priority VCDU
was not
received
during real
time, but was
in the .fcd
PPT file.
085-18:40 43 DR# 1 0 - Unknown - Lost TF U Yes
A01167 [02128] 4 PB
- Rate change VCDUs
80-120bps
085-19:42 43 1 0 - Rate change - Lost TF SPA No
120-160bps. [02155] 1 PB
VCDU
- The fill
period starts
one VCDU time
early causing
the loss of
the first VCDU
of Science
data coming
out of the
scheduled fill
period. Eight
VCDUs of fill
are scheduled
for a
120-160bps
rate change.
086-02:22 49 DR# 3 0 - DSS49 to - Lost TFs W Yes
A01168 stow due to [02336 -> 02338]
-> 02:32 high winds. 9 PB, 2 RTS, & 1
Priority VCDUs
- 120-80bps
rate change
087-18:18 43 DR# 2 0 - Unknown - Lost TFs U Yes
A01172 [02754 & 02756]
-> 18:23 - Rate change 8 PB VCDUs
80-120bps
087-19:06 43 DR# 1 0 - Rate change - Lost TF SPA No
A01172 120-160bps [02774] 1 RTS
VCDU
087-21:17 43 DR# 3 0 - Thruster - Lost TFs SPA No
A01173 flush activity [02844 -> 02846]
-> 21:24 1 RTS & 1
Priority VCDUs
087-22:43 43 DR# 2 0 - The MEC - Lost TFs A Yes
A01174 inoperative. [02882 & 02883]
-> 22:48 The MEC was 1 RTS & 1
reset to Priority VCDUs
restore
operability.
088-18:46 43 DR# 1 0 - Rate change - Lost TF U Yes
A01175 80-120bps [03143] 2 RTS
VCDUs
089-07:19 63 2 0 The ACE - Lost TFs UPA No
requested the [03333 & 03334]
-> 07:33 station 7 RTS & 1
perform a Priority VCDUs
resweep of the
uplink after
noting
incorrect
parameters in
the original
uplink sweep.
The original
uplink sweep
did appear to
get into the
spacecraft.
The E6
sequence ended
on 089/16:46
TOTAL 453 196
Total Science 10172
Frames:
Total Frames 12111
(including
Fill):
PP - Procedural (Project) Transfer Frames #s lost in brackets [.........]
PD - Procedural (DSN) F - Facility problem (e.g. power failure)
H - DGT H/W Related/Failure U - Unknown
A - Antenna Problem W - Weather (e.g. Parkes stow due to high winds)
S - DGT S/W Related; Error or newly understood
idiosyncracy/workaround/constraint
SA - Spacecraft anomaly and recovery actions
UPA - Unscheduled project action
SPA - Scheduled Project action
PN - Procedural (Nascom)
GCF- GCF hardware/software anomaly