COS Cycle-23 Calibration Phase-1
Last Revised:
Proposal ID:
Title:
PI:
Co-I(s):
08/11/15
TBD
COS FUV Recovery after Anomalous Shutdown
T. Wheeler
A. Welty
D. Sahnow
S. Penton
C. Proffitt
J. McPhate (UC Berkeley)
--------------------------------------------------------------------------# Orbit estimates are TOTAL for all of Cycle-23;
Total Prime Orbits:
n/a
External Parallel Orbits:
n/a
Internals or no-impact orbits: n/a
Comments on orbit estimate
This is a contingency proposal only.
--------------------------------------------------------------------------# This section should be written with a GO audience in mind -- use
# Calibration plans in WFPC-2 handbook as a guide.
Purpose: This proposal is designed to permit the conservative, safe, and
orderly recovery of the COS/FUV detector after an anomalous HV shutdown.
Description: This proposal consists of the steps for turning on and ramping
up the COS FUV high voltage in a conservative manner after a HV anomalous
shutdown by executing a “reduced set” of visits from Cycle 22, Proposal
13977. The nature of the shutdown, i.e., over-light, HV current transient
(“crackle”), ion feedback (induced by a high energy particle), or field
emission (possibly caused by dust or other particulate on the QE grid or
other close-by structure or hardware), and the value of the commanded HV at
the time of the shutdown will determine what visits are executed. Because of
gain sag, commanded HV settings updates may be required.
First, prior to execution of this proposal or selected visits from this
proposal, all preliminary steps should be exercised to gather the necessary
diagnostic data, e.g., science data evaluation (if a science exposure was in
progress and the science data is available), memory dumps (DCE, EXEC RAM, and
possibly the CS BUFFER), engineering telemetry, or other information that
might provide insight as to the nature of the shutdown and estimated count
rate.
• If the shutdown shows new or poorly understood behavior, then consult with
the appropriate experts prior to deciding which visits in the anomalous
recovery proposal are required.
• Primary criteria for deciding if event is the “same” as the 30 April 2012
event will be the temporal and spatial structure of the counts and gain
– Sudden drop in gain followed by extended field emission
– Primary emission localized to regions previously seen to have
slightly enhanced dark rate
– May have less information than before if shutdown occurs outside a
time-tag exposure
• The shutdown will also be compared to FUSE like “crackles” that produced
current transients
• Shutdowns due to external or internal lamp over-light will be evaluated
based on estimated level of violation to decide if damage is a concern
The sequence day, visits numbers, exposures, and rough “after by” times (end
to start) are listed. Number listed in parentheses, e.g., (100/100), or
154/151 are the HV command counts for Segment A and B, respectively.
Throughout the proposal, different “after by” times, sequence containers, and
new alignments are used to optimize flow, schedulability, telemetry and
science data analyses, and the clearing of flag 3. The proposal is designed
such that the selected visits and exposures MUST be executed in order.
Additionally, all visits are compliant with CARD 3.4.12.8 - COS FUV Mandatory
Dwell Time at HVLow (1 hour dwell at HVLow before ramping to a more negative
voltage) and CARD 3.4.12.9 – COS FUV High Voltage QE Grid Operation (HV must
be less negative or equal to the HVLow to switch grid on or off).
All dark exposures will be 3600 sec. with STIMS set to 30. All wave exposures
will be 60 sec. with STIMs set to 2000.
Day 1
V01 Uninhibit the DCE - Flag 3 must be clear to execute.
1. FUV Inhibit to Boot
2. DCE RAM Dump - to capture the cause of the shutdown
3. FUV Boot to Operate
V02 QE off - Turn HV on - After Visit 01 by 0.0 to 1.0hr
1. QE off - Turn HV on (0/0 do not ramp)
2. DCE RAM dump
V03 QE off - Ramp to HVLow - After V02 by 0.0 to 1.0hr
1. Ramp to HVLow (100/100)
2. DCE RAM dump
3. Dark exposure
V04 Return to Operate - After V03 by 0.0 to 1.0hr
1. Return to Operate (HV off)
2. DCE RAM dump
V05 QE on - Turn HV on - After V04 by 0.0 to 1.0hr
1. QE on - Turn HV on (0/0 do not ramp)
2. DCE RAM dump
V06 QE on - Ramp to HVLow (100/100) - After V05 by 0.0 to 1.0hr
1. Ramp to HVLow (100/100)
2. DCE RAM Dump
3. Dark exposure
V07 Return to Operate - After V06 by 0.0 to 1.0hr
1. Return to Operate (HV off)
2. DCE RAM dump
3. Set flag 3
Day 2
V08 QE on - Ramp to 154/151 - After V01 by 1D to 2D for analysis. Flag 3 must
be clear to execute.
Qasi_States will auto-schedule the normal Operate to HVLow transition
1. Install memory monitors
2. Ramp HV to 154/151
3. DCE RAM dump
4. Dark exposure
5. Wave exposure
V09 Return to Operate - After V08 by 0.0 to 1.0hr
1. Return to HVLow (100/100)
2. DCE RAM dump
3. Set flag 3
Day 3
V10 QE on - Ramp to 160/157 - After V08 by 1D to 2D for analysis. Flag 3 must
be clear to execute.
Qasi_States will auto-schedule the normal Operate to HVLow transition
1. Ramp HV to 160/157
2. DCE RAM dump
3. Dark exposure
4. Wave exposure
V11 Return to Operate - After V10 by 0.0 to 1.0hr
1. Return to HVLow
2. DCE RAM dump
3. Set flag 3
Day 4
V12 QE on - Ramp to 167/163 - After V10 by 1D to 2D for analysis. Flag 3 must
be clear to execute.
Qasi_States will auto-schedule the normal Operate to HVLow transition
1. Ramp to HV to 167/163
2. DCE RAM dump
3. Dark exposure
4. Wave exposure
V13 Return to Operate - After by V12 by 0.0 to 1.0hr
1. Return to HVLow (100/100)
2. DCE RAM dump
3. Set flag 3
Day 5
V14 QE on - Ramp to 172/169 - After V12 by 1D to 2D for analysis. Flag 3 must
be clear to execute.
Qasi_States will auto-schedule the normal Operate to HVLow transition
1. Ramp to HV to 172/169
2. DCE RAM dump
3. Dark exposure
4. Wave exposure
V15 Return to Operate - After V14 by 0.0 to 1.0hr
1. Return to HVLow (100/100)
2. DCE RAM dump
3. Set flag 3
Day 06
V16 QE on - Ramp to HVNom (178/175) - After V14 by 1D to 2D for analysis.
Flag 3 must be clear to execute.
Qasi_States will auto-schedule the normal Operate to HVLow transition
1. Ramp to HV to HVNom (178/175)
2. DCE RAM dump
3. Dark exposure
4. Wave exposure
V17 Return to HVOperate -- After V26 by 1.5hr to 2.1
1. Return to HVLow (100/100)
2. DCE RAM dump
3. Set flag 3
Day 07
Clear flag 3 (Real-time) - After V16 1D for analysis. Flag 3 must be clear to
continue science operations.
Accuracy:
n/a
Comments on Accuracy:
n/a
Products:
n/a
--------------------------------------------------------------------------# Link to Cycle 23 Science
# Use the GO + GTO Phase 1 exposure listing and derived statistics
# posted on WWW.
Fraction of science programs supported by this calibration: This is a
contingency procedure only.
List categories of science which can't be executed until after this proposal:
n/a
why:
n/a
List categories of science which are best performed contemporaneous with this
proposal:
n/a
why:
--------------------------------------------------------------------------# THE REST OF THIS FORM IS FOR INTERNAL USE
--------------------------------------------------------------------------Observation summary: The recovery procedure is divided into distinct parts
with one part executed per day. Each part (day) consists of HV ramp-up with
diagnostics and darks, followed by a ramp-down to HVLow (except for Day 01
where the HV is turned off), and setting of event Flag 3. Cognitive UC
Berkeley, COS Instrument Scientist, and engineering will examine data dumps,
science exposures, and housekeeping telemetry. If all is well, an official
go-ahead will be given to clear Flag 3 and proceed with the next part. This
continues until the nominal HV voltage is reached.
# Target information (copy for each target)
Target Name.
: n/a
RA.
: n/a
Dec.
: n/a
Flux (and units).
: n/a
Visibility window (if known or relevant): n/a
Comment on choice of target
: n/a
#
#
#
#
#
#
Exposure list plan at the Phase I level. Be as complete as reasonable.
If possible information should be complete enough to allow easy
submission of a Phase 2 from this form. However, if you have to leave
some of the fields blank below, or want to provide the information
in another format, that is acceptable. (Make sure you do the BOP checking
though, as this is a phase-1 issue.)
------------------------------------------------------------------------**** This list of exposures should be executed ONLY in the event of ****
****
an anomalous COS/FUV shutdown
****
------------------------------------------------------------------------Table of exposures (copy for each exposure as appropriate/desired):
Visit 1, Uninhibit the DCE
Visit 1, Exposure 1: FUV Inhibit to Boot
Target or lamp
: Dark
Type of Acquisition
: n/a
Detector for observation
: S/C
Operating mode
: Data
Spectral Element
: n/a
Aperture
: n/a
Central Wavelength
: n/a
Exposure Time
: 10s
Number of Iterations
: 1
BOP Predicted Local Count Rate for FUV : n/a, no detector HV
BOP Predicted Global Count Rate for FUV : n/a, no detector HV
ETC PID IDs for Count Rates
: n/a
Special Requirements or options
: Special commanding
Comments:
Sequence 1-3 Same Alignment.
It is assumed that this will be the first FUV activity on an SMS and that
the CS is in Operate state. Therefore, the starting FUV state is set to
HVLOW, which is the nominal SMS boundary state.
Unhibit the DCE for commanding by setting dce_FUVInhibitMode == FALSE in
the CS FSW. Several other houskeeping tasks are also cleaned up.
.
Special commanding: Instruction = ELRECOVERF.
Visit 1, Exposure 2: DCE RAM Dump
Target or lamp
: Dark
Type of Acquisition
: n/a
Detector for observation
: S/C
Operating mode
: Data
Spectral Element
: n/a
Aperture
: n/a
Central Wavelength
: n/a
Exposure Time
: 60s
Number of Iterations
: 1
BOP Predicted Local Count Rate for FUV : n/a, no detector HV
BOP Predicted Global Count Rate for FUV : n/a, no detector HV
ETC PID IDs for Count Rates
: n/a
Special Requirements or options
: Special commanding
Comments:
Copy and dump DCE RAM provides a dump of the FUV HV and AUX power current
monitors (HVIA, HVIB, AUXI). Each has 1024-sample
buffer that monitors the current at 1ms sampling (looping through,
overwriting the data that is 1 second old), and a cumulative histogram
of the current values (this would be a buffer of 256 values for each
monitor).
Special commanding: Instruction = ELCOPYDCE.
Visit 1, Exposure 3: FUV Boot to Operate
Target or lamp
: Dark
Type of Acquisition
: n/a
Detector for observation
: S/C
Operating mode
: Data
Spectral Element
: n/a
Aperture
: n/a
Central Wavelength
: n/a
Exposure Time
: 180s
Number of Iterations
: 1
BOP Predicted Local Count Rate for FUV : n/a
BOP Predicted Global Count Rate for FUV : n/a
ETC PID IDs for Count Rates
: n/a
Special Requirements or options
: Special commanding
Comments:
Use normal recons.
.
Special commanding: Instruction = RLBTTOPF.
Visit 2: QE Off – Turn HV On
Visit 2,Exposure 1: QE Off - Turn HV On
Target or lamp
: Dark
Type of Acquisition
: n/a
Detector for observation
: S/C
Operating mode
: Data
Spectral Element
: n/a
Aperture
: n/a
Central Wavelength
: n/a
Exposure Time
: 50s
Number of Iterations
: 1
BOP Predicted Local Count Rate for FUV : n/a
BOP Predicted Global Count Rate for FUV : n/a
ETC PID IDs for Count Rates
: n/a
Special Requirements or options
: Special commanding
Comments:
Sequence 1-2 Non-Int
Special commanding will be used to execute the FUV Operate to HV On (0/0
or approximately ~ -2500V) reconfiguration and will stop there.
Diagnostics are taken (DCE RAM dumps) after each transition.
Special commanding: Instruction = ELOPTNQF.
Visit 2, Exposure 2: DCE RAM Dump
Comments:
Same as Visit 1, Exposure 2
Visit 3: QE Off – Ramp to HVLOW
Visit 3, Exposure 1: QE Off - Ramp to HVLOW (100/100)
Target or lamp
: Dark
Type of Acquisition
: n/a
Detector for observation
: COS FUV
Operating mode
: Data
Spectral Element
: n/a
Aperture
: n/a
Central Wavelength
: n/a
Exposure Time
: 1060s
Number of Iterations
: 1
BOP Predicted Local Count Rate for FUV : n/a
BOP Predicted Global Count Rate for FUV : n/a
ETC PID IDs for Count Rates
: n/a
Special Requirements or options
: Special commanding
Comments:
Ramp the FUV HV to HVLow. The commanding assumes the HV is already on.
Special commanding: Instruction = ELHOTHLF.
Visit 3, Exposure 2: DCE RAM Dump
Comments:
Same as Visit 1, Exposure 2
Visit 3, Exposure 3: Dark
Target or lamp
Type of Acquisition
Detector for observation
Operating mode
Spectral Element
Aperture
Central Wavelength
Exposure Time
Number of Iterations
BOP Predicted Local Count Rate for FUV
BOP Predicted Global Count Rate for FUV
ETC PID IDs for Count Rates
Special Requirements or options
:
:
:
:
:
:
:
:
:
:
:
:
:
:
Dark
n/a
COS FUV
Time-Tag
Default
Default
n/a
3600.0s
1
n/a
n/a
n/a
Buffer Time = 3600
Stim Rate = 30
Comments:
Visit 4: Return to Operate
Visit 4, Exposure 1
Target or lamp
: Dark
Type of Acquisition
: n/a
Detector for observation
: S/C
Operating mode
: Data
Spectral Element
: None
Aperture
: None
Central Wavelength
: n/a
Exposure Time
: 50s
Number of Iterations
: 1
BOP Predicted Local Count Rate for FUV : n/a
BOP Predicted Global Count Rate for FUV : n/a
ETC PID IDs for Count Rates
: n/a
Special Requirements or options
: Special commanding
Comments:
Special commanding: Instruction = RLHLTOPF.
Visit 4, Exposure 2: DCE RAM Dump
Comments:
Same as Visit 1, Exposure 2
Visit 5: QE On – Turn HV On
Visit 5,Exposure 1: QE On - Turn HV On
Target or lamp
Type of Acquisition
Detector for observation
Operating mode
Spectral Element
Aperture
Central Wavelength
Exposure Time
Number of Iterations
BOP Predicted Local Count Rate for FUV
BOP Predicted Global Count Rate for FUV
ETC PID IDs for Count Rates
Special Requirements or options
Comments:
Sequence 1-2 Non-Int
:
:
:
:
:
:
:
:
:
:
:
:
:
Dark
n/a
S/C
Data
n/a
n/a
n/a
50s
1
n/a
n/a
n/a
Special commanding
Special commanding will be used to execute the FUV Operate to HV On (0/0
or approximately ~ -2500V) reconfiguration and will stop there.
Diagnostics are taken (DCE RAM dumps) after each transition.
Special commanding: Instruction = ELOPTHOF.
Visit 5, Exposure 2: DCE RAM Dump
Comments:
Same as Visit 1, Exposure 2
Visit 6: QE On – Ramp to HVLOW
Visit 6, Exposure 1: QE Off - Ramp to HVLOW (100/100)
Target or lamp
: Dark
Type of Acquisition
: n/a
Detector for observation
: COS FUV
Operating mode
: Data
Spectral Element
: n/a
Aperture
: n/a
Central Wavelength
: n/a
Exposure Time
: 1060s
Number of Iterations
: 1
BOP Predicted Local Count Rate for FUV : n/a
BOP Predicted Global Count Rate for FUV : n/a
ETC PID IDs for Count Rates
: n/a
Special Requirements or options
: Special commanding
Comments:
Ramp the FUV HV to HVLow. The commanding assumes the HV is already on.
Special commanding: Instruction = RLOPTHLF.
Visit 6, Exposure 2: DCE RAM Dump
Comments:
Same as Visit 1, Exposure 2
Visit 6, Exposure 3: Dark
Target or lamp
Type of Acquisition
Detector for observation
Operating mode
Spectral Element
Aperture
Central Wavelength
Exposure Time
Number of Iterations
BOP Predicted Local Count Rate for FUV
BOP Predicted Global Count Rate for FUV
ETC PID IDs for Count Rates
Special Requirements or options
:
:
:
:
:
:
:
:
:
:
:
:
:
:
Dark
n/a
COS FUV
Time-Tag
Default
Default
n/a
3600.0s
1
n/a
n/a
n/a
Buffer Time = 3600
Stim Rate = 30
:
:
:
:
:
:
Dark
n/a
S/C
Data
None
None
Comments:
Visit 7: Return to Operate
Visit 7, Exposure 1
Target or lamp
Type of Acquisition
Detector for observation
Operating mode
Spectral Element
Aperture
Central Wavelength
: n/a
Exposure Time
: 50s
Number of Iterations
: 1
BOP Predicted Local Count Rate for FUV : n/a
BOP Predicted Global Count Rate for FUV : n/a
ETC PID IDs for Count Rates
: n/a
Special Requirements or options
: Special commanding
Comments:
Special commanding: Instruction = RLHLTOPF.
Visit 7, Exposure 2: DCE RAM Dump
Comments:
Same as Visit1, Exposure 2
Visit 7, Exposure 3: Set COS Event Flag 3
Target or lamp
: Dark
Type of Acquisition
: n/a
Detector for observation
: COS FUV
Operating mode
: Data
Spectral Element
: n/a
Aperture
: n/a
Central Wavelength
: n/a
Exposure Time
: 1s
Number of Iterations
: 1
BOP Predicted Local Count Rate for FUV : n/a
BOP Predicted Global Count Rate for FUV : n/a
ETC PID IDs for Count Rates
: n/a
Special Requirements or options
: Special commanding
Comments:
.
Special commanding: Instruction = ELFLAG3.
Visit 8: QE On – Ramp to 154/151
Visit 8, Exposure 1: QE On - Ramp to 154/151
Target or lamp
: Dark
Type of Acquisition
: n/a
Detector for observation
: COS FUV
Operating mode
: Data
Spectral Element
: n/a
Aperture
: n/a
Central Wavelength
: n/a
Exposure Time
: 451s
Number of Iterations
: 1
BOP Predicted Local Count Rate for FUV : n/a
BOP Predicted Global Count Rate for FUV : n/a
ETC PID IDs for Count Rates
: n/a
Special Requirements or options
: Special commanding
Comments:
Ramp the FUV HV to 154/151. The commanding assumes the HV is already on.
Special commanding: Instruction = ELHLTHVF.
Visit 8, Exposure 2: DCE RAM Dump
Comments:
Same as Visit 1, Exposure 2
Visit 8, Exposure 3: Dark
Target or lamp
Type of Acquisition
: Dark
: n/a
Detector for observation
Operating mode
Spectral Element
Aperture
Central Wavelength
Exposure Time
Number of Iterations
BOP Predicted Local Count Rate for FUV
BOP Predicted Global Count Rate for FUV
ETC PID IDs for Count Rates
Special Requirements or options
:
:
:
:
:
:
:
:
:
:
:
:
COS FUV
Time-Tag
Default
Default
n/a
3600.0s
1
n/a
n/a
n/a
Buffer Time = 3600
Stim Rate = 30
:
:
:
:
:
:
:
:
:
:
:
:
:
Wave
n/a
COS FUV
Time-Tag
G160M 1600
WCA
n/a
60.0s
1
n/a
n/a
n/a
Current = Medium
Comments:
Visit 8, Exposure 4: Wave
Target or lamp
Type of Acquisition
Detector for observation
Operating mode
Spectral Element
Aperture
Central Wavelength
Exposure Time
Number of Iterations
BOP Predicted Local Count Rate for FUV
BOP Predicted Global Count Rate for FUV
ETC PID IDs for Count Rates
Special Requirements or options
: FP Pos = 3
: Stim Rate = 30
Comments:
Visit 9: Return to Operate
Visit 9, Exposure 1
Target or lamp
: Dark
Type of Acquisition
: n/a
Detector for observation
: S/C
Operating mode
: Data
Spectral Element
: None
Aperture
: None
Central Wavelength
: n/a
Exposure Time
: 50s
Number of Iterations
: 1
BOP Predicted Local Count Rate for FUV : n/a
BOP Predicted Global Count Rate for FUV : n/a
ETC PID IDs for Count Rates
: n/a
Special Requirements or options
: Special commanding
Comments:
Special commanding: Instruction = RLHLTOPF.
Visit 9, Exposure 2: DCE RAM Dump
Comments:
Same as Visit1, Exposure 2
Visit 9, Exposure 3: Set COS Event Flag 3
Target or lamp
: Dark
Type of Acquisition
: n/a
Detector for observation
: COS FUV
Operating mode
: Data
Spectral Element
: n/a
Aperture
: n/a
Central Wavelength
: n/a
Exposure Time
: 1s
Number of Iterations
: 1
BOP Predicted Local Count Rate for FUV : n/a
BOP Predicted Global Count Rate for FUV : n/a
ETC PID IDs for Count Rates
: n/a
Special Requirements or options
: Special commanding
Comments:
.
Special commanding: Instruction = ELFLAG3.
Visit 10: QE On – Ramp to 160/157
Visit 10, Exposure 1: QE On - Ramp to 160/157
Target or lamp
: Dark
Type of Acquisition
: n/a
Detector for observation
: COS FUV
Operating mode
: Data
Spectral Element
: n/a
Aperture
: n/a
Central Wavelength
: n/a
Exposure Time
: 451s
Number of Iterations
: 1
BOP Predicted Local Count Rate for FUV : n/a
BOP Predicted Global Count Rate for FUV : n/a
ETC PID IDs for Count Rates
: n/a
Special Requirements or options
: Special commanding
Comments:
Ramp the FUV HV to 154/151. The commanding assumes the HV is already on.
Special commanding: Instruction = ELHLTHVF.
Visit 10, Exposure 2: DCE RAM Dump
Comments:
Same as Visit 1, Exposure 2
Visit 10, Exposure 3: Dark
Target or lamp
Type of Acquisition
Detector for observation
Operating mode
Spectral Element
Aperture
Central Wavelength
Exposure Time
Number of Iterations
BOP Predicted Local Count Rate for FUV
BOP Predicted Global Count Rate for FUV
ETC PID IDs for Count Rates
Special Requirements or options
:
:
:
:
:
:
:
:
:
:
:
:
:
:
Dark
n/a
COS FUV
Time-Tag
Default
Default
n/a
3600.0s
1
n/a
n/a
n/a
Buffer Time = 3600
Stim Rate = 30
Comments:
Visit 10, Exposure 4: Wave
Target or lamp
: Wave
Type of Acquisition
Detector for observation
Operating mode
Spectral Element
Aperture
Central Wavelength
Exposure Time
Number of Iterations
BOP Predicted Local Count Rate for FUV
BOP Predicted Global Count Rate for FUV
ETC PID IDs for Count Rates
Special Requirements or options
:
:
:
:
:
:
:
:
:
:
:
:
n/a
COS FUV
Time-Tag
G160M 1600
WCA
n/a
60.0s
1
n/a
n/a
n/a
Current = Medium
: FP Pos = 3
: Stim Rate = 30
Comments:
Visit 11: Return to Operate
Visit 11, Exposure 1
Target or lamp
: Dark
Type of Acquisition
: n/a
Detector for observation
: S/C
Operating mode
: Data
Spectral Element
: None
Aperture
: None
Central Wavelength
: n/a
Exposure Time
: 50s
Number of Iterations
: 1
BOP Predicted Local Count Rate for FUV : n/a
BOP Predicted Global Count Rate for FUV : n/a
ETC PID IDs for Count Rates
: n/a
Special Requirements or options
: Special commanding
Comments:
Special commanding: Instruction = RLHLTOPF.
Visit 11, Exposure 2: DCE Diagnostic RAM Copy and Dump
Comments:
Same as Visit1, Exposure 2
Visit 11, Exposure 3: Set COS Event Flag 3
Target or lamp
: Dark
Type of Acquisition
: n/a
Detector for observation
: COS FUV
Operating mode
: Data
Spectral Element
: n/a
Aperture
: n/a
Central Wavelength
: n/a
Exposure Time
: 1s
Number of Iterations
: 1
BOP Predicted Local Count Rate for FUV : n/a
BOP Predicted Global Count Rate for FUV : n/a
ETC PID IDs for Count Rates
: n/a
Special Requirements or options
: Special commanding
Comments:
Special commanding: Instruction = ELFLAG3.
Visit 12: QE On – Ramp to 167/163
Visit 12, Exposure 1: QE On - Ramp to 167/163
Target or lamp
: Dark
Type of Acquisition
: n/a
Detector for observation
: COS FUV
Operating mode
: Data
Spectral Element
: n/a
Aperture
: n/a
Central Wavelength
: n/a
Exposure Time
: 451s
Number of Iterations
: 1
BOP Predicted Local Count Rate for FUV : n/a
BOP Predicted Global Count Rate for FUV : n/a
ETC PID IDs for Count Rates
: n/a
Special Requirements or options
: Special commanding
Comments:
Ramp the FUV HV to 167/163. The commanding assumes the HV is already on.
Special commanding: Instruction = ELHLTHVF.
Visit 12, Exposure 2: DCE RAM Dump
Comments:
Same as Visit 1, Exposure 2
Visit 12, Exposure 3: Dark
Target or lamp
Type of Acquisition
Detector for observation
Operating mode
Spectral Element
Aperture
Central Wavelength
Exposure Time
Number of Iterations
BOP Predicted Local Count Rate for FUV
BOP Predicted Global Count Rate for FUV
ETC PID IDs for Count Rates
Special Requirements or options
:
:
:
:
:
:
:
:
:
:
:
:
:
:
Dark
n/a
COS FUV
Time-Tag
Default
Default
n/a
3600.0s
1
n/a
n/a
n/a
Buffer Time = 3600
Stim Rate = 30
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
Wave
n/a
COS FUV
Time-Tag
G160M 1600
WCA
n/a
60.0s
1
n/a
n/a
n/a
Current = Medium
FP Pos = 3
Stim Rate = 30
Comments:
Visit 12, Exposure 4: Wave
Target or lamp
Type of Acquisition
Detector for observation
Operating mode
Spectral Element
Aperture
Central Wavelength
Exposure Time
Number of Iterations
BOP Predicted Local Count Rate for FUV
BOP Predicted Global Count Rate for FUV
ETC PID IDs for Count Rates
Special Requirements or options
Comments:
Visit 13: Return to Operate
Visit 13, Exposure 1
Target or lamp
: Dark
Type of Acquisition
: n/a
Detector for observation
: S/C
Operating mode
: Data
Spectral Element
: None
Aperture
: None
Central Wavelength
: n/a
Exposure Time
: 50s
Number of Iterations
: 1
BOP Predicted Local Count Rate for FUV : n/a
BOP Predicted Global Count Rate for FUV : n/a
ETC PID IDs for Count Rates
: n/a
Special Requirements or options
: Special commanding
Comments:
Special commanding: Instruction = RLHLTOPF.
Visit 13, Exposure 2: DCE Diagnostic RAM Copy and Dump
Comments:
Same as Visit1, Exposure 2
Visit 13, Exposure 3: Set COS Event Flag 3
Target or lamp
: Dark
Type of Acquisition
: n/a
Detector for observation
: COS FUV
Operating mode
: Data
Spectral Element
: n/a
Aperture
: n/a
Central Wavelength
: n/a
Exposure Time
: 1s
Number of Iterations
: 1
BOP Predicted Local Count Rate for FUV : n/a
BOP Predicted Global Count Rate for FUV : n/a
ETC PID IDs for Count Rates
: n/a
Special Requirements or options
: Special commanding
Comments:
Special commanding: Instruction = ELFLAG3.
Visit 14: QE On – Ramp to 171/169
Visit 14, Exposure 1: QE On - Ramp to 172/169
Target or lamp
: Dark
Type of Acquisition
: n/a
Detector for observation
: COS FUV
Operating mode
: Data
Spectral Element
: n/a
Aperture
: n/a
Central Wavelength
: n/a
Exposure Time
: 451s
Number of Iterations
: 1
BOP Predicted Local Count Rate for FUV : n/a
BOP Predicted Global Count Rate for FUV : n/a
ETC PID IDs for Count Rates
: n/a
Special Requirements or options
: Special commanding
Comments:
Ramp the FUV HV to 172/169. The commanding assumes the HV is already on.
Special commanding: Instruction = ELHLTHVF.
Visit 14, Exposure 2: DCE RAM Dump
Comments:
Same as Visit 1, Exposure 2
Visit 14, Exposure 3: Dark
Target or lamp
Type of Acquisition
Detector for observation
Operating mode
Spectral Element
Aperture
Central Wavelength
Exposure Time
Number of Iterations
BOP Predicted Local Count Rate for FUV
BOP Predicted Global Count Rate for FUV
ETC PID IDs for Count Rates
Special Requirements or options
:
:
:
:
:
:
:
:
:
:
:
:
:
:
Dark
n/a
COS FUV
Time-Tag
Default
Default
n/a
3600.0s
1
n/a
n/a
n/a
Buffer Time = 3600
Stim Rate = 30
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
Wave
n/a
COS FUV
Time-Tag
G160M 1600
WCA
n/a
60.0s
1
n/a
n/a
n/a
Current = Medium
FP Pos = 3
Stim Rate = 30
Comments:
Visit 14, Exposure 4: Wave
Target or lamp
Type of Acquisition
Detector for observation
Operating mode
Spectral Element
Aperture
Central Wavelength
Exposure Time
Number of Iterations
BOP Predicted Local Count Rate for FUV
BOP Predicted Global Count Rate for FUV
ETC PID IDs for Count Rates
Special Requirements or options
Comments:
Visit 15: Return to Operate
Visit 15, Exposure 1
Target or lamp
: Dark
Type of Acquisition
: n/a
Detector for observation
: S/C
Operating mode
: Data
Spectral Element
: None
Aperture
: None
Central Wavelength
: n/a
Exposure Time
: 50s
Number of Iterations
: 1
BOP Predicted Local Count Rate for FUV : n/a
BOP Predicted Global Count Rate for FUV : n/a
ETC PID IDs for Count Rates
: n/a
Special Requirements or options
: Special commanding
Comments:
Special commanding: Instruction = RLHLTOPF.
Visit 15, Exposure 2: DCE Diagnostic RAM Copy and Dump
Comments:
Same as Visit1, Exposure 2
Visit 15, Exposure 3: Set COS Event Flag 3
Target or lamp
: Dark
Type of Acquisition
: n/a
Detector for observation
: COS FUV
Operating mode
: Data
Spectral Element
: n/a
Aperture
: n/a
Central Wavelength
: n/a
Exposure Time
: 1s
Number of Iterations
: 1
BOP Predicted Local Count Rate for FUV : n/a
BOP Predicted Global Count Rate for FUV : n/a
ETC PID IDs for Count Rates
: n/a
Special Requirements or options
: Special commanding
Comments:
Special commanding: Instruction = ELFLAG3.
Visit 16: QE On – Ramp to 178/175
Visit 16, Exposure 1: QE On - Ramp to 178/175
Target or lamp
: Dark
Type of Acquisition
: n/a
Detector for observation
: COS FUV
Operating mode
: Data
Spectral Element
: n/a
Aperture
: n/a
Central Wavelength
: n/a
Exposure Time
: 451s
Number of Iterations
: 1
BOP Predicted Local Count Rate for FUV : n/a
BOP Predicted Global Count Rate for FUV : n/a
ETC PID IDs for Count Rates
: n/a
Special Requirements or options
: Special commanding
Comments:
Ramp the FUV HV to 178/175. The commanding assumes the HV is already on.
Special commanding: Instruction = ELHLTHVF.
Visit 16, Exposure 2: DCE RAM Dump
Comments:
Same as Visit 1, Exposure 2
Visit 16, Exposure 3: Dark
Target or lamp
Type of Acquisition
Detector for observation
Operating mode
Spectral Element
Aperture
Central Wavelength
Exposure Time
Number of Iterations
BOP Predicted Local Count Rate for FUV
BOP Predicted Global Count Rate for FUV
:
:
:
:
:
:
:
:
:
:
:
Dark
n/a
COS FUV
Time-Tag
Default
Default
n/a
3600.0s
1
n/a
n/a
ETC PID IDs for Count Rates
Special Requirements or options
: n/a
: Buffer Time = 3600
: Stim Rate = 30
Comments:
Visit 16, Exposure 4: Wave
Target or lamp
Type of Acquisition
Detector for observation
Operating mode
Spectral Element
Aperture
Central Wavelength
Exposure Time
Number of Iterations
BOP Predicted Local Count Rate for FUV
BOP Predicted Global Count Rate for FUV
ETC PID IDs for Count Rates
Special Requirements or options
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
Wave
n/a
COS FUV
Time-Tag
G160M 1600
WCA
n/a
60.0s
1
n/a
n/a
n/a
Current = Medium
FP Pos = 3
Stim Rate = 30
Comments:
Visit 17: Return to Operate
Visit 17, Exposure 1
Target or lamp
: Dark
Type of Acquisition
: n/a
Detector for observation
: S/C
Operating mode
: Data
Spectral Element
: None
Aperture
: None
Central Wavelength
: n/a
Exposure Time
: 50s
Number of Iterations
: 1
BOP Predicted Local Count Rate for FUV : n/a
BOP Predicted Global Count Rate for FUV : n/a
ETC PID IDs for Count Rates
: n/a
Special Requirements or options
: Special commanding
Comments:
Special commanding: Instruction = RLHLTOPF.
Visit 17, Exposure 2: DCE Diagnostic RAM Copy and Dump
Comments:
Same as Visit1, Exposure 2
Visit 17, Exposure 3: Set COS Event Flag 3
Target or lamp
: Dark
Type of Acquisition
: n/a
Detector for observation
: COS FUV
Operating mode
: Data
Spectral Element
: n/a
Aperture
: n/a
Central Wavelength
: n/a
Exposure Time
: 1s
Number of Iterations
: 1
BOP Predicted Local Count Rate for FUV : n/a
BOP Predicted Global Count Rate for FUV : n/a
ETC PID IDs for Count Rates
: n/a
Special Requirements or options
: Special commanding
Comments:
Special commanding: Instruction = ELFLAG.
--------------------------------------------------------------------------# Special needs of this proposal?
This proposal is run to reactivate the COS FUV following an anomalous
shutdown.
Scheduling: As needed
Prerequisites: (e.g., specific SMOV proposal; command development?)
PDB update?
On-board table update?
(Specify table name if known e.g. SIAF).
(Specify table name if known e.g. CCDBadPixelTable)
# Special Requirements:
Real time?
Y
Special commanding?
Y
Quick Data turnaround?
Y (time-tags and engineering telemetry)
Special timing required? N
Other?
N
Describe (& justify) special requirements: The engineering telemetry for each
step is required to evaluate the safety for proceeding.
------------------------------------------------------------------------# Analysis Plan per Anomalous Shutdown
Expected FTE weeks for analysis:
Required turnaround on analysis (weeks):
Data volume (Mb needed for analysis):
Special software needed for analysis? (Describe):
0.6
0.2 per test
n/a
None
Description of analysis Plans: (1-2 paragraphs)
Analysis is carried out by the cognitive UC Berkeley, COS Instrument
Scientist, and engineers within 24 hours of each test to examine data dumps,
science exposures, and engineering telemetry. The darks and time-tag images
are examined for unusual spatial or temporal features. The engineering
telemetry data is examined (voltages, currents, temperatures, relay position,
status, and event counts) for agreement with predicted values from previous
ground and on-orbit tests or model-predicted values.