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Monitoring of Data

  1. HRMA
  2. PCAD
  3. HRC
  4. ACIS
  5. Gratings
  6. SIM
  7. SubSystems
  8. EPHIN

An outline of the software design is available for perusal.
Certain data flow diagrams are available for comment.
  • Standard data flow.
  • Real time data flow.
  • Alerts pathway for red alerts and for
  • yellow alerts.
  • MTA data base data flow.
  • Current monitored MSID list.

    Our first thread rehearsal wal Dec 12, 1997. The report on that rehearsal is here. We had a thread rehearsal May 31, 1998, status updates here , general issues are here . I have also copied some sample output data here for general perusal. There is a full summary page for that rehearsal. I am also on the committee for safe mode testing.


    The software folks have code to generate automated reports like this one from Thermal Vac test which you can read if you are within the ASC. They are also developing a bunch of standalone IDL based analysis tools. Screen grabs here show the strip plotter (with the derivative tool ), ACIS Level 1 visulaizer, HRMA thermal visulaizer.


    Goals for monitoring include processing data through the following canned gadgets. Current interface control files are linked in:

    HRMA

    5.6.2.1.1.1, .2 and .4 Retrieve HRMA temperature readouts and each gradient

    5.6.2.1.1.3 Calculate axial, radial, diametral gradients

    5.6.2.1.2.1 HRMA thermal control system housekeeping

    PCAD

    5.6.2.1.2.1 Check on-board quaternion vs. expected pointing position

    5.6.2.1.2.2 Determine Aspect Camera Assembly temperatures L0*

    5.6.2.1.2.3 Check ACA configuration

    5.6.2.1.2.4.1 Check position of each star.

    5.6.2.1.2.4.2 Check pattern of stars.

    5.6.2.1.2.4.3 Check mag. of each star.

    5.6.2.1.2.4.4 Check PRF of each star.

    5.6.2.1.2.5.1 Check position of each FID light.

    5.6.2.1.2.5.2 Check pattern of FID lights.

    5.6.2.1.2.5.3 Check mag. of each FID light.

    5.6.2.1.2.5.4 Check PRF of each FID light.

    5.6.2.1.2.6 Check for detection of optical monitor star, if expected

    5.6.2.1.2.7 Check CCD camera dark current, readout noise, sky background,

    5.6.2.1.2.8 Check temperatures of, and gradient across FTS

    5.6.2.1.2.10 Determine IRU temperatures and voltages

    5.6.2.1.2.11 Check for gyro rate data within limits

    5.6.2.1.2.12 Monitor drift rate updates to gyros

    5.6.2.1.2.13 Check for motion stability within limits

    5.6.2.1.2.14 Determine reaction wheel rates

    5.6.2.1.2.15 Determine RCS gas usage, and amount in tanks

    5.6.2.1.2.16 Determine Absolute maneuver accuracy

    5.6.2.1.2.17 Check sun sensor readings against expected angle from Sun

    HRC

    5.6.2.1.3.1 Determine HRC background event counting rates.

    5.6.2.1.3.2 Determine X-ray target source counting rates.

    5.6.2.1.3.4 create image in TDET.

    5.6.2.1.3.5 Determine VETO rate.

    5.6.2.1.3.6 infer background rates and proper functional state

    5.6.2.1.3.7 Dose tool.

    5.6.2.1.3.8 Temperatures.

    5.6.2.1.3.9 Electronics

    ACIS

    5.6.2.1.4.1 ACIS configuration

    5.6.2.1.4.7 ACIS thermal

    5.6.2.1.4.8 ACIS electronics

    5.6.2.1.4.9 ACIS DEA

    5.6.2.1.4.2 Determine ACIS Background Rates

    5.6.2.1.4.3 Compute electronic readout noise

    5.6.2.1.4.5 Generate Image in Detector Coordinates

    5.6.2.1.4.6 Utilize next-in-line mode

    Gratings

    5.6.2.1.5.0 Grating Hardware electronics

    5.6.2.1.5.2 Zero-order image centroid position

    5.6.2.1.5.5 Calculate grating constants

    5.6.2.1.5.6 Grating thermal environment

    5.6.2.1.5.7 Compare the first-order spectrum to the zero-order spectrum

    SIM

    5.6.2.1.6.1 Determine SIM position

    5.6.2.1.6.3 Determine SIM temperatures and voltages

    5.6.2.1.6.4 Monitor SIM actuator use

    SUBSYSTEMS

    5.6.2.1.8.2 Monitor OBC State

    5.6.2.1.8.4 Monitor spacecraft temperatures

    5.6.2.1.8.5 Monitor power usage and availability

    EPHIN

    5.6.2.1.9.1 Check ephin housekeeping status, detector/ counter status

    5.6.2.1.9.2 Check ephin temperatures and voltages


    Email problems to: swolk@head-cfa.harvard.edu (Scott Wolk)
    ...it is all his fault