STIS Cycle-29 Calibration Phase-1

Last Revised:                  05/14/2021
Proposal ID:                   ?
Title:                         STIS MAMA Recovery from Anomalous Shutdown
PI:                            T. Wheeler
Co-I(s):                       A. Welty

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# Orbit estimates are TOTAL for all of Cycle-29

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 procedure.


---------------------------------------------------------------------------
# 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 a safe and orderly recovery of
    the STIS FUV or NUV MAMA detector after an anomalous shutdown. This is
    accomplished by using slower-than-normal MCP high-voltage ramp-ups and
    diagnostics.

    Anomalous shutdowns can occur because of bright object violations, which
    trigger the Global Hardware Monitor or the Global Software Monitor.
    Anomalous shutdowns can also occur because of MAMA hardware anomalies or
    failures. The cause of the shutdown should be thoroughly investigated
    and understood prior to recovery.

Description:
    Anomalous shutdowns can occur because of bright object
    violations, which trigger the Global Hardware Monitor or the Global
    Software Monitor. Anomalous shutdowns can also occur because of MAMA
    hardware anomalies or failures. The cause of the shutdown should be
    thoroughly investigated and understood prior to recovery. Twenty-four
    hour wait intervals are required after each test for MCP gas desorption
    and data analysis. Event flags are used to prevent inadvertent MAMA
    usage.

    The recovery procedure consists of three separate tests (i.e. visits)
    to check the MAMAÕs health after an anomalous shutdown. Each must be
    successfully completed before proceeding onto the next. This proposal
    executes the same steps as Cycle 28, Proposal 16357.

    (1) Signal processing electronics check. The amplifiers threshold voltage
        is reduced from 0.48V to 0.28V; ORCOUNTS rates are monitored (MAMA HV
        is off during this procedure).
    (2) Slow, intermediate voltage high-voltage ramp-up. The MCP HV is slow-
        ramped to a voltage 300V below nominal. A dark time-tag exposure is 
        taken during this partial ramp. A second dark accum exposure is
        taken where the event counter is cycled through X, Y, Z, W, VE, EV and
        OR.
    (3) Ramp-up to full operating voltage. As before, a dark time-tag
        exposure is taken during this ramp-up. A second dark accum exposure
        is taken where the event counter is cycled through X, Y, Z, W, VE,
        EV and OR. This is followed by and fold analysis test (See STIS ISR
        98-02R).

Accuracy:                       n/a
Comments on Accuracy:           n/a
Products:                       n/a


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# Link to Cycle 29 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:                            n/a

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# THE REST OF THIS FORM IS FOR INTERNAL USE
---------------------------------------------------------------------------
Observation summary:
    The recovery from an anomalous shutdown consists of three tests: a
    signal processing electronics check, high voltage ramp-up to an
    intermediate voltage and a high voltage ramp-up to the full operating
    voltage followed by a fold distribution test. During each of the two
    high voltage ramp-ups, time-tag exposures are taken and diagnostics are
    performed. Post-ramp dark accums with diagnostics follow. The final
    full ramp is followed by a fold distribution test.

# 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.)

Table of exposures (copy for each exposure as appropriate/desired):
---------------------------------------------------------------------------
**** This list of exposures should be executed ONLY in the event of  ****
****                 an anomalous FUV MAMA shutdown.                 ****
---------------------------------------------------------------------------
Note (1)
Bright Object Protection Considerations during.
 (a) This proposal uses lamp/aperture/mirror combinations which are
     designed to produce count rates of ~100,000-200,000 count/sec. They
     should not be changed without consultation with the P.I.
 (b) During the execution of the fold analysis some anode folds are 
     disabled. Consequently, the OR counter does not provide a true 
     representation of the OR count and so the Software Global Monitor
     (SGM) does not trigger until the enabled folds provide enough
     counts to the OR counter to trigger the SGM's threshold. To
     compensate, while the fold analysis is running the SGM threshold is
     reduced to 150,000 counts (130,000 counts are used due to ground 
     system restrictions) in a 1.0 second interval, from its nominal
     value of 77,000 counts in a 0.1 second interval.
 (c) For the reasons discussed in (b) and to prevent light from entering
     the hub area, this test should only be run with the STIS external
     shutter closed.

Visit 1, Exposure 1: Signal Processing Electronics Checkout - LV On
Target or lamp..........................: Dark
Type of Acquisition.....................: n/a
Detector for observation................: FUV MAMA (M1)
Operating mode..........................: Data
Spectral Element........................: n/a
Aperture................................: n/a
Central Wavelength......................: n/a
Exposure Time...........................: 3600s 
Number of Iterations....................: 1
BOP Predicted Local Count Rate for MAMA.: n/a, no detector HV
BOP Predicted Global Count Rate for MAMA: n/a, no detector HV
ETC PID IDs for Count Rates.............: n/a
Special Requirements or options.........: Special commanding
Comments:
    Sequence 1-3 Non-Int.
    Switch on LV power supply.
    Set SGM Threshold = 77000, Integration Period = 0.1 secs.
    Set amplifier threshold to default (0.48V)- Collect a minimum of 30
    telemetry points.
    Set amplifier threshold to 0.28V - Collect a minimum of 300 telemetry
    points.
    Special commanding: Instruction = EOHDTLV1_1.

Visit 1, Exposure 2: Signal Processing Electronics Checkout - LV Off
Target or lamp..........................: Dark
Type of Acquisition.....................: n/a
Detector for observation................: FUV MAMA (M1)
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 MAMA.: n/a, no detector HV
BOP Predicted Global Count Rate for MAMA: n/a, no detector HV
ETC PID IDs for Count Rates.............: n/a
Special Requirements or options.........: Special commanding
Comments:
    Special commanding: Instruction = ROLVTHDM1.

Visit 1, Exposure 3: Signal Processing Electronics Checkout - Set Flag 2
Target or lamp..........................: Dark
Type of Acquisition.....................: n/a
Detector for observation................: FUV MAMA (M1)
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 MAMA.: n/a, no detector HV
BOP Predicted Global Count Rate for MAMA: n/a, no detector HV
ETC PID IDs for Count Rates.............: n/a
Special Requirements or options.........: Special commanding
Comments:
    Special commanding: Instruction = EOFLAG2.

Visit 2, Exposure 1: Intermediate HV Checkout - Low Voltage On
Target or lamp..........................: Dark
Type of Acquisition.....................: n/a
Detector for observation................: FUV MAMA (M1)
Operating mode..........................: Data
Spectral Element........................: n/a
Aperture................................: n/a
Central Wavelength......................: n/a
Exposure Time...........................: 120s
Number of Iterations....................: 1
BOP Predicted Local Count Rate for MAMA.: Special monitoring per ISR 98-03
BOP Predicted Global Count Rate for MAMA: Special monitoring per ISR 98-03
ETC PID IDs for Count Rates.............: n/a
Special Requirements or options.........: Special commanding
Comments:
    Sequence 1-4 Non-Int.
    Must clear event flag 2 for the commanding to execute
    Switch on LV power supply.
    Special commanding: Instruction = EOHDTLV1_2.

Visit 2 Exposure 2: Intermediate HV Checkout - Ramp HV to -1950V/-100V
Target or lamp..........................: Dark
Type of Acquisition.....................: n/a
Detector for observation................: FUV MAMA (M1)
Operating mode..........................: Time-Tag
Spectral Element........................: DEFAULT
Aperture................................: DEFAULT
Central Wavelength......................: n/a
Exposure Time...........................: 1840s
Number of Iterations....................: 1
BOP Predicted Local Count Rate for MAMA.: Special monitoring per ISR 98-03
BOP Predicted Global Count Rate for MAMA: Special monitoring per ISR 98-03
ETC PID IDs for Count Rates.............: n/a
Special Requirements or options.........: Buffer_Time = 1800
                                          Special Commanding
Comments:
    Incrementally ramp up the detector up to 300 V below its nominal MCP 
    operating voltage.
    A -100 volt ramp-up of the filed voltage (FV) voltage is also 
    required for the detection of photons. 
    Set SGM to Threshold = 100, Integration Period = 0.1 secs.
    Collect minimum of 5 telemetry samples at each voltage.
    Special commanding: Instruction = EOLVTHV1_2.

Visit 2, Exposure 3: Intermediate HV Checkout - Cycle SGM
Target or lamp..........................: Dark
Type of Acquisition.....................: n/a
Detector for observation................: FUV MAMA (M1)
Operating mode..........................: Accum
Spectral Element........................: DEFAULT
Aperture................................: DEFAULT
Central Wavelength......................: n/a
Exposure Time...........................: 480s
Number of Iterations....................: 1
BOP Predicted Local Count Rate for MAMA.: Special monitoring per ISR 98-03
BOP Predicted Global Count Rate for MAMA: Special monitoring per ISR 98-03
ETC PID IDs for Count Rates.............: n/a
Special Requirements or options.........: Special commanding
Comments:
    Set SGM to Threshold = 200, Integration Period = 0.1 secs.
    Collect minimum 5 samples X events.
    Collect minimum 5 samples Y events.
    Collect minimum 5 samples Z events.
    Collect minimum 5 samples W events.
    Collect minimum 5 samples VE events.
    Collect minimum 5 samples EV events.
    Collect minimum 5 samples OR events.
    Special commanding: Instruction = EOCYCLE1_2.

Visit 2, Exposure 4: Intermediate HV Checkout - HV Off, LV Off, Set Flag 2
Target or lamp..........................: Dark
Type of Acquisition.....................: n/a
Detector for observation................: FUV MAMA (M1)
Operating mode..........................: Data
Spectral Element........................: n/a
Aperture................................: n/a
Central Wavelength......................: n/a
Exposure Time...........................: 480s
Number of Iterations....................: 1
BOP Predicted Local Count Rate for MAMA.: Special monitoring per ISR 98-03
BOP Predicted Global Count Rate for MAMA: Special monitoring per ISR 98-03
ETC PID IDs for Count Rates.............: n/a
Special Requirements or options.........: Special commanding
Comments:
    Ramp down detector.
    Set event flag 2 to prevent visit 3 from turning on the detector 
      without human approval.
    Special commanding: Instruction = EOHVTHD1_2.

Visit 3, Exposure 1: Full High Voltage Test - Low Voltage On
Target or lamp..........................: Dark
Type of Acquisition.....................: n/a
Detector for observation................: FUV MAMA (M1)
Operating mode..........................: Data
Spectral Element........................: n/a
Aperture................................: n/a
Central Wavelength......................: n/a
Exposure Time...........................: 120s
Number of Iterations....................: 1
BOP Predicted Local Count Rate for MAMA.: n/a, no detector HV
BOP Predicted Global Count Rate for MAMA: n/a, no detector HV
ETC PID IDs for Count Rates.............: n/a
Special Requirements or options.........: Special commanding
Comments:
    Sequence 1-7 Non-Int.
    Switch on LV power supply.
    Must clear event flag 2 for the commanding to execute.
    Special commanding: Instruction = EOHDTLV1_3.

Visit 3, Exposure 2: Full High Voltage Test - Ramp to -2250V/-1500V 
Target or lamp..........................: Dark
Type of Acquisition.....................: n/a
Detector for observation................: FUV MAMA (M1)
Operating mode..........................: Time-Tag
Spectral Element........................: DEFAULT
Aperture................................: DEFAULT
Central Wavelength......................: n/a
Exposure Time...........................: 3350s
Number of Iterations....................: 1
BOP Predicted Local Count Rate for MAMA.: Special monitoring per ISR 98-03
BOP Predicted Global Count Rate for MAMA: Special monitoring per ISR 98-03
ETC PID IDs for Count Rates.............: n/a
Special Requirements or options.........: Buffer_Time = 1800 
                                          Special commanding 
Comments: 
    Incrementally ramp up the detector up to its full operating 
      voltage. 
    Set SGM Threshold = 100, Integration Period = 0.1 secs. 
    Collect minimum of 5 telemetry samples at each voltage. 
    For requirements refer to TIR STIS 98-03. 
    Special commanding: Instruction = EOLVTHV1_3. 

Visit 3, Exposure 3: Full High Voltage Test Ð Cycle SGM 
Target or lamp..........................: Dark
Type of Acquisition.....................: n/a 
Detector for observation................: FUV MAMA (M1)
Operating mode..........................: Accum
Spectral Element........................: DEFAULT
Aperture................................: DEFAULT
Central Wavelength......................: n/a
Exposure Time...........................: 480s
Number of Iterations....................: 1
BOP Predicted Local Count Rate for MAMA.: Special monitoring per ISR 98-03
BOP Predicted Global Count Rate for MAMA: Special monitoring per ISR 98-03
ETC PID IDs for Count Rates.............: n/a
Special Requirements or options.........: Special commanding
Comments: 
    Set SGM Threshold = 200, Integration Period = 0.1 secs.
    Collect minimum 5 samples X events.
    Collect minimum 5 samples Y events.
    Collect minimum 5 samples Z events.
    Collect minimum 5 samples W events.
    Collect minimum 5 samples VE events.
    Collect minimum 5 samples EV events.
    Collect minimum 5 samples OR events.
    Special commanding: Instruction = EOCYCLE1_3.

Visit 3, Exposure 4: Full High Voltage Test - Fold Test Setup
Target or lamp..........................: Dark
Type of Acquisition.....................: n/a
Detector for observation................: FUV MAMA (M1)
Operating mode..........................: Data
Spectral Element........................: n/a
Aperture................................: n/a
Central Wavelength......................: n/a
Exposure Time...........................: 240s
Number of Iterations....................: 1
BOP Predicted Local Count Rate for MAMA.: Note (1)
BOP Predicted Global Count Rate for MAMA: Note (1)
ETC PID IDs for Count Rates.............: 
Special Requirements or options.........: Special Commanding
Comments:
    Set SGM Threshold = 15000, Integration Period = 0.1 secs.
    Configure Mechanisms.
    Turn on HITM2 lamp at 10mA current.
    Special commanding: Instruction = EOFOLDSET1.

Visit 3, Exposure 5: Full High Voltage Test - Accum
Target or lamp..........................: Dark
Type of Acquisition.....................: n/a
Detector for observation................: FUV MAMA (M1)
Operating mode..........................: Accum
Spectral Element........................: MIRROR
Aperture................................: F25ND3
Central Wavelength......................: NONE
Exposure Time...........................: 300s
Number of Iterations....................: 1
BOP Predicted Local Count Rate for MAMA.: Note (1)
BOP Predicted Global Count Rate for MAMA: Note (1)
ETC PID IDs for Count Rates.............: 
Special Requirements or options.........: Special Commanding
Comments:
    This image is a flat field exposure with the HITM2 using special
      commanding so that the lamp remains on after the exposure.

Visit 3, Exposure 6: Full High Voltage Test - Fold Test
Target or lamp..........................: Dark
Type of Acquisition.....................: n/a
Detector for observation................: FUV MAMA (M1)
Operating mode..........................: Data
Spectral Element........................: MIRROR
Aperture................................: F25ND3
Central Wavelength......................: n/a
Exposure Time...........................: 2300s
Number of Iterations....................: 1
BOP Predicted Local Count Rate for MAMA.: Note (1)
BOP Predicted Global Count Rate for MAMA: Note (1)
ETC PID IDs for Count Rates.............: 
Special Requirements or options.........: Special Commanding
Comments:
    Set SGM Threshold = 130000, Integration Period = 1.0 secs.
(a) Collect counter samples during flat field illumination
    Collect 5 samples X events
    Collect 5 samples Y events
    Collect 5 samples Z events
    Collect 5 samples W events
    Collect 5 samples VE events
    Collect 5 samples EV events
    Collect 5 samples OR events
(b) Disable MAMA Folds: C2, C3, C4, C5, C6, R2, R3, R4, R5, R6
(c) Conduct fold analysis
    Collect 5 samples VE for following 19 combinations of MAMA folds:
        (1) Enabled: C2, R2; Disabled: C3, C4, C5, C6, R3, R4, R5, R6
        (2) Enabled: C2, R3; Disabled: C3, C4, C5, C6, R2, R4, R5, R6
        (3) Enabled: C3, R2; Disabled: C2, C4, C5, C6, R3, R4, R5, R6
        (4) Enabled: C2, R4; Disabled: C3, C4, C5, C6, R2, R3, R5, R6
        (5) Enabled: C3, R3; Disabled: C2, C4, C5, C6, R2, R4, R5, R6
        (6) Enabled: C4, R2; Disabled: C2, C3, C5, C6, R3, R4, R5, R6
        (7) Enabled: C3, R4; Disabled: C2, C4, C5, C6, R2, R3, R5, R6
        (8) Enabled: C4, R3; Disabled: C2, C3, C5, C6, R2, R4, R5, R6
        (9) Enabled: C3, R5; Disabled: C2, C4, C5, C6, R2, R3, R4, R6
       (10) Enabled: C4, R4; Disabled: C2, C3, C5, C6, R2, R3, R5, R6
       (11) Enabled: C5, R3; Disabled: C2, C3, C4, C6, R2, R4, R5, R6
       (12) Enabled: C4, R5; Disabled: C2, C3, C5, C6, R2, R3, R4, R6
       (13) Enabled: C5, R4; Disabled: C2, C3, C4, C6, R2, R3, R5, R6
       (14) Enabled: C4, R6; Disabled: C2, C3, C5, C6, R2, R3, R4, R5
       (15) Enabled: C5, R5; Disabled: C2, C3, C4, C6, R2, R3, R4, R6
       (16) Enabled: C6, R4; Disabled: C2, C3, C4, C5, R2, R3, R5, R6
       (17) Enabled: C5, R6; Disabled: C2, C3, C4, C6, R2, R3, R4, R5
       (18) Enabled: C6, R5; Disabled: C2, C3, C4, C5, R2, R3, R4, R6
       (19) Enabled: C6, R6; Disabled: C2, C3, C4, C5, R2, R3, R4, R5
(d) Enable MAMA folds C2, C3, C4, C5, C6, R2, R3, R4, R5, R6
      at completion of exposure.
(e) Check lamp stability by checking EV and VE
    Collect 5 samples events (EV) to check lamp stability
    Collect 5 samples Valid Events (VE) to check lamp stability
(f) Turn off HITM2 lamp
(g) Collect event counter data for detector dark count rate
    Collect 5 samples X dark events
    Collect 5 samples Y dark events
    Collect 5 samples Z dark events
    Collect 5 samples W dark events
    Collect 5 samples VE dark events
    Collect 5 samples EV dark events
    Collect 5 samples OR dark events
(h) At completion of procedure reset SGM to nominal operating level

    Special commanding: Instruction = EOFOLDTST1

Visit 3, Exposure 7: Full High Voltage Test - FUV to LV
Target or lamp..........................: Dark
Type of Acquisition.....................: n/a
Detector for observation................: FUV MAMA (M1)
Operating mode..........................: Data
Spectral Element........................: MIRROR
Aperture................................: F25ND3
Central Wavelength......................: n/a
Exposure Time...........................: 480s
Number of Iterations....................: 1
BOP Predicted Local Count Rate for MAMA.: Note (1)
BOP Predicted Global Count Rate for MAMA: Note (1)
ETC PID IDs for Count Rates.............: 
Special Requirements or options.........: Special Commanding
Comments:
    Ramp down detector.
    Special commanding: Instruction = EOHVTHD1_3
-------------------------------------------------------------------------
**** This list of exposures should be executed ONLY in the event of  ****
****                 an anomalous NUV MAMA shutdown.                 ****
-------------------------------------------------------------------------

Visit 4, Exposure 1: Signal Processing Electronics Checkout - LV On
Target or lamp..........................: Dark
Type of Acquisition.....................: n/a
Detector for observation................: NUV MAMA (M2)
Operating mode..........................: Data
Spectral Element........................: n/a
Aperture................................: n/a
Central Wavelength......................: n/a
Exposure Time...........................: 3600s
Number of Iterations....................: 1
BOP Predicted Local Count Rate for MAMA.: n/a, no detector HV
BOP Predicted Global Count Rate for MAMA: n/a, no detector HV
ETC PID IDs for Count Rates.............: n/a
Special Requirements or options.........: Special commanding
Comments:
    Sequence 1-3 Non-Int.
    Switch on LV power supply.
    Set SGM Threshold = 77000, Integration Period = 0.1 secs.
    Set amplifier threshold to default (0.48V)- Collect a minimum of 30
      telemetry points.
    Set amplifier threshold to 0.28V- Collect a minimum of 300 telemetry 
      points.
    Special commanding: Instruction = EOHDTLV2_1

Visit 4, Exposure 2: Signal Processing Electronics Checkout - LV Off
Target or lamp..........................: Dark
Type of Acquisition.....................: n/a
Detector for observation................: NUV MAMA (M2)
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 MAMA.: n/a, no detector HV
BOP Predicted Global Count Rate for MAMA: n/a, no detector HV
ETC PID IDs for Count Rates.............: n/a
Special Requirements or options.........:  Special commanding
Comments: 
    Special commanding: Instruction = ROLVTHDM2

Visit 4, Exposure 3: Signal Processing Electronics Checkout - Set Flag 3
Target or lamp..........................: Dark
Type of Acquisition.....................: n/a
Detector for observation................: NUV MAMA (M2)
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 MAMA.: n/a, no detector HV
BOP Predicted Global Count Rate for MAMA: n/a, no detector HV
ETC PID IDs for Count Rates.............: n/a
Special Requirements or options.........: Special commanding
Comments: 
    Special commanding: Instruction = EOFLAG3

Visit 5, Exposure 1: Intermediate HV Checkout - LV On
Target or lamp..........................: Dark
Type of Acquisition.....................: n/a
Detector for observation................: NUV MAMA (M2)
Operating mode..........................: Data
Spectral Element........................: n/a
Aperture................................: n/a
Central Wavelength......................: n/a
Exposure Time...........................: 120s
Number of Iterations....................: 1
BOP Predicted Local Count Rate for MAMA.: Special monitoring per ISR 98-03
BOP Predicted Global Count Rate for MAMA: Special monitoring per ISR 98-03
ETC PID IDs for Count Rates.............: n/a
Special Requirements or options.........: Special commanding
Comments:
    Sequence 1-4 Non-Int.
    Must clear event flag 3 for the commanding to execute.   
    Switch on LV power supply.
    Special commanding: Instruction = EOHDTLV2_2.

Visit 5, Exposure 2: Intermediate HV Checkout - Ramp HV to -1750V/-50V
Target or lamp..........................: Dark
Type of Acquisition.....................: n/a
Detector for observation................: NUV MAMA (M2)
Operating mode..........................: Time-Tag
Spectral Element........................: DEFAULT
Aperture................................: DEFAULT
Central Wavelength......................: n/a
Exposure Time...........................: 2070s
Number of Iterations....................: 1
BOP Predicted Local Count Rate for MAMA.: Special monitoring per ISR 98-03
BOP Predicted Global Count Rate for MAMA: Special monitoring per ISR 98-03
ETC PID IDs for Count Rates.............: n/a
Special Requirements or options.........: Buffer_Time = 1800
                                          Special commanding
Comments:
    Incrementally ramp up the detector up to 300 V below its nominal MCP
    operating voltage.
    A -50 volt ramp-up of the photocathode (PC) voltage is also required
    for the detection of photons.
    Set SGM Threshold = 1000, Integration Period = 0.1 secs.
    Collect minimum of 4 telemetry samples at each voltage.
    Special commanding: Instruction = EOLVTHV2_2.

Visit 5, Exposure 3: Intermediate HV Checkout - Cycle SGM
Target or lamp..........................: Dark
Type of Acquisition.....................: n/a
Detector for observation................: NUV MAMA (M2)
Operating mode..........................: Accum
Spectral Element........................: DEFAULT
Aperture................................: DEFAULT
Central Wavelength......................: n/a
Exposure Time...........................: 480s
Number of Iterations....................: 1
BOP Predicted Local Count Rate for MAMA.: Special monitoring per ISR 98-03
BOP Predicted Global Count Rate for MAMA: Special monitoring per ISR 98-03
ETC PID IDs for Count Rates.............: n/a
Special Requirements or options.........: Special commanding
Comments:
    Set SGM Threshold = 1000, Integration Period = 0.1 secs.
    Collect minimum 5 samples X events.
    Collect minimum 5 samples Y events.
    Collect minimum 5 samples Z events.
    Collect minimum 5 samples W events.
    Collect minimum 5 samples VE events.
    Collect minimum 5 samples EV events.
    Collect minimum 5 samples OR events.
    Special commanding: Instruction = EOCYCLE2_2.

Visit 5, Exposure 4: Intermediate HV Checkout - HV Off, LV Off, Set Flag 3
Target or lamp..........................: Dark
Type of Acquisition.....................: n/a
Detector for observation................: NUV MAMA (M2)
Operating mode..........................: Data
Spectral Element........................: n/a
Aperture................................: n/a
Central Wavelength......................: n/a
Exposure Time...........................: 420s
Number of Iterations....................: 1
BOP Predicted Local Count Rate for MAMA.: Special monitoring per ISR 98-03
BOP Predicted Global Count Rate for MAMA: Special monitoring per ISR 98-03
ETC PID IDs for Count Rates.............: n/a
Special Requirements or options.........: Special commanding
Comments: 
    Ramp down detector.
    Set event flag 3 to prevent visit 4 from turning on the detector
    without human approval.
    Special commanding: Instruction = EOHVTHD2_2.

Visit 6, Exposure 1: Full High Voltage Test - LV On
Target or lamp..........................: Dark
Type of Acquisition.....................: n/a
Detector for observation................: FUV MAMA (M2)
Operating mode..........................: Data
Spectral Element........................: n/a
Aperture................................: n/a
Central Wavelength......................: n/a
Exposure Time...........................: 120s
Number of Iterations....................: 1
BOP Predicted Local Count Rate for MAMA.: n/a, no detector HV
BOP Predicted Global Count Rate for MAMA: n/a, no detector HV
ETC PID IDs for Count Rates.............: n/a
Special Requirements or options.........: Special commanding
Comments:
    Sequence 1-7 Non-Int.
    Switch on LV power supply.
    Must clear event flag 3 for the commanding to execute.
    Special commanding: Instruction = EOHDTLV2_3.

Visit 6, Exposure 2: Full High Voltage Test - Ramp HV to -2050V/-700V
Target or lamp..........................: Dark
Type of Acquisition.....................: n/a
Detector for observation................: NUV MAMA (M2)
Operating mode..........................: Time-Tag
Spectral Element........................: DEFAULT
Aperture................................: DEFAULT
Central Wavelength......................: n/a
Exposure Time...........................: 3110s
Number of Iterations....................: 1
BOP Predicted Local Count Rate for MAMA.: Special monitoring per ISR 98-03
BOP Predicted Global Count Rate for MAMA: Special monitoring per ISR 98-03
ETC PID IDs for Count Rates.............: n/a
Special Requirements or options.........: Buffer_Time = 1800
                                          Special commanding
Comments:
    Incrementally ramp up the detector up to its full operating voltage.
    Set SGM Threshold = 1000, Integration Period = 0.1 secs.
    Collect minimum of 4 telemetry samples at each voltage.
    Special commanding: Instruction = EOLVTHV2_3.

Visit 6, Exposure 3: Full High Voltage Test - Cycle SGM
Target or lamp..........................: Dark
Type of Acquisition.....................: n/a
Detector for observation................: FUV MAMA (M2)
Operating mode..........................: Accum
Spectral Element........................: DEFAULT
Aperture................................: DEFAULT
Central Wavelength......................: n/a
Exposure Time...........................: 480s
Number of Iterations....................: 1
BOP Predicted Local Count Rate for MAMA.: Special monitoring per ISR 98-03
BOP Predicted Global Count Rate for MAMA: Special monitoring per ISR 98-03
ETC PID IDs for Count Rates.............: n/a
Special Requirements or options.........: Special commanding
Comments:
    Set SGM Threshold = 1000, Integration Period = 0.1 secs.
    Collect 5 samples X dark events.
    Collect 5 samples Y dark events.
    Collect 5 samples Z dark events.
    Collect 5 samples W dark events
    Collect 5 samples VE dark events.
    Collect 5 samples EV dark events.
    Collect 5 samples OR dark events.
    Special commanding: Instruction = EOCYCLE2_3.

Visit 6, Exposure 4: Full High Voltage Test - Fold Test Setup
Target or lamp..........................: Dark
Type of Acquisition.....................: n/a
Detector for observation................: NUV MAMA (M2)
Operating mode..........................: Data
Spectral Element........................: n/a
Aperture................................: n/a
Central Wavelength......................: n/a
Exposure Time...........................: 240s
Number of Iterations....................: 1
BOP Predicted Local Count Rate for MAMA.: Note (1)
BOP Predicted Global Count Rate for MAMA: Note (1)
ETC PID IDs for Count Rates.............: 
Special Requirements or options.........: SEQ 1-3 NON-INT
                                          Special Commanding
Comments:
    Sequence 1-3 Non-Int.
    Set SGM Threshold = 15000, Integration Period = 0.1 secs.
    Configure Mechanisms.
    Turn on HITM1 lamp at 3.8mA current.
    Special commanding: Instruction = EOFOLDSET2.

Visit 6, Exposure 5: Full High Voltage Test - Accum
Target or lamp..........................: Dark
Type of Acquisition.....................: n/a
Detector for observation................: NUV MAMA (M2)
Operating mode..........................: Accum
Spectral Element........................: MIRROR
Aperture................................: F25ND3
Central Wavelength......................: NONE
Exposure Time...........................: 120s
Number of Iterations....................: 1
BOP Predicted Local Count Rate for MAMA.: Note (1)
BOP Predicted Global Count Rate for MAMA: Note (1)
ETC PID IDs for Count Rates.............: 
Special Requirements or options.........: Special Commanding
Comments:
    This image is a flat field exposure with the HITM1 using special 
    commanding so that the lamp remains on after the exposure.

Visit 6, Exposure 6: Full High Voltage Test - Fold Test
Target or lamp..........................: Dark
Type of Acquisition.....................: n/a
Detector for observation................: NUV MAMA (M2)
Operating mode..........................: Data
Spectral Element........................: MIRROR
Aperture................................: F25ND3
Central Wavelength......................: n/a
Exposure Time...........................: 2300s
Number of Iterations....................: 1
BOP Predicted Local Count Rate for MAMA.: Note (1)
BOP Predicted Global Count Rate for MAMA: Note (1)
ETC PID IDs for Count Rates.............: 
Special Requirements or options.........: Special Commanding
Comments:
    Set SGM Threshold = 130000, SGM Integration Period = 1.0 secs.
(a) Collect counter samples during flat field illumination
    Collect 5 samples X events.
    Collect 5 samples Y events.
    Collect 5 samples Z events.
    Collect 5 samples W events.
    Collect 5 samples VE events.
    Collect 5 samples EV events.
    Collect 5 samples OR events.
(b) Disable MAMA Folds: C2, C3, C4, C5, C6, R2, R3, R4, R5, R6
(c) Conduct fold analysis
    Collect 5 samples VE for following 19 combinations of MAMA folds:
        (1) Enabled: C2, R2; Disabled: C3, C4, C5, C6, R3, R4, R5, R6
        (2) Enabled: C2, R3; Disabled: C3, C4, C5, C6, R2, R4, R5, R6
        (3) Enabled: C3, R2; Disabled: C2, C4, C5, C6, R3, R4, R5, R6
        (4) Enabled: C2, R4; Disabled: C3, C4, C5, C6, R2, R3, R5, R6
        (5) Enabled: C3, R3; Disabled: C2, C4, C5, C6, R2, R4, R5, R6
        (6) Enabled: C4, R2; Disabled: C2, C3, C5, C6, R3, R4, R5, R6
        (7) Enabled: C3, R4; Disabled: C2, C4, C5, C6, R2, R3, R5, R6
        (8) Enabled: C4, R3; Disabled: C2, C3, C5, C6, R2, R4, R5, R6
        (9) Enabled: C3, R5; Disabled: C2, C4, C5, C6, R2, R3, R4, R6
       (10) Enabled: C4, R4; Disabled: C2, C3, C5, C6, R2, R3, R5, R6
       (11) Enabled: C5, R3; Disabled: C2, C3, C4, C6, R2, R4, R5, R6
       (12) Enabled: C4, R5; Disabled: C2, C3, C5, C6, R2, R3, R4, R6
       (13) Enabled: C5, R4; Disabled: C2, C3, C4, C6, R2, R3, R5, R6
       (14) Enabled: C4, R6; Disabled: C2, C3, C5, C6, R2, R3, R4, R5
       (15) Enabled: C5, R5; Disabled: C2, C3, C4, C6, R2, R3, R4, R6
       (16) Enabled: C6, R4; Disabled: C2, C3, C4, C5, R2, R3, R5, R6
       (17) Enabled: C5, R6; Disabled: C2, C3, C4, C6, R2, R3, R4, R5
       (18) Enabled: C6, R5; Disabled: C2, C3, C4, C5, R2, R3, R4, R6
       (19) Enabled: C6, R6; Disabled: C2, C3, C4, C5, R2, R3, R4, R5
(d) Enable MAMA folds C2, C3, C4, C5, C6, R2, R3, R4, R5, R6
    at completion of exposure.
(e) Check lamp stability by checking EV and VE
    Collect 5 samples events (EV) to check lamp stability
    Collect 5 samples Valid Events (VE) to check lamp stability
(f) Turn off HITM1 lamp
(g) Collect event counter data for detector dark count rate
    Collect 5 samples X dark events
    Collect 5 samples Y dark events
    Collect 5 samples Z dark events
    Collect 5 samples W dark events
    Collect 5 samples VE dark events
    Collect 5 samples EV dark events
    Collect 5 samples OR dark events
(h) At completion of procedure reset SGM to nominal operating level

    Special commanding: Instruction = EOFOLDTST2

Visit 6, Exposure 7: Full High Voltage Test - NUV to LV
Target or lamp..........................: Dark
Type of Acquisition.....................: n/a
Detector for observation................: NUV MAMA (M2)
Operating mode..........................: Data
Spectral Element........................: MIRROR
Aperture................................: F25ND3
Central Wavelength......................: n/a
Exposure Time...........................: 360s
Number of Iterations....................: 1
BOP Predicted Local Count Rate for MAMA.: Note (1)
BOP Predicted Global Count Rate for MAMA: Note (1)
ETC PID IDs for Count Rates.............: 
Special Requirements or options.........: Special Commanding
Comments:
    Ramp down detector.
    Special commanding: Instruction = EOHVTHD2_3


---------------------------------------------------------------------------
# Special needs of this proposal?
This proposal is run to reactivate the FUV or NUV MAMA following an
anomalous shutdown.

Scheduling: As needed

Prerequisites: (e.g., specific SMOV proposal; command development?)

PDB update?               (Specify table name if known e.g. SIAF).
On-board table update?    (Specify table name if known e.g. CCDBadPixelTable)

# Special Requirements:
Real time?                Y
Special commanding?       Y
Quick Data turnaround?    Y (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:                                0.4
Required turnaround on analysis (weeks):                        0.2 per step
Data volume (Mb needed for analysis):                           n/a
Special software needed for analysis? (Describe):               none

Description of analysis Plans: (1-2 paragraphs)

Analysis is carried out by the Engineering Team within 24 hours of each test
in the checkout. 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.

The time-tag images are examined for unusual spatial or temporal features.
Dark and accum images are examined for unusual features, blemishes, and
defects.