ISIM ASIC Tuning Template Parameters
JWST's ISIM ASIC Tuning Template, available in the Astronomer’s Proposal Tool (APT), is used to execute onboard ASIC tuning studies with a user-specified configuration file for either FGS, NIRCam, NIRISS or NIRSpec (MIRI does not have any ASICs).
Purple text indicates the parameter is Limited Access.
Boldface italics type indicates the name of an APT parameter or a value for a parameter.
Red text indicates restrictions on a parameter.
Black text indicates an important note.
Brown text indicates notes for the developers.
Green text indicates the name of the parameter used by Commanding.
Items in brackets - <value> - are required values.
Items in square brackets - [<value>] - are optional.
The ISIM ASIC Tuning template is to be used by the Commanding Team to execute onboard ASIC tuning studies with a user-specified configuration file for either FGS, NIRCam, NIRISS or NIRSpec (MIRI does not have any ASICs).
ISIM ASIC Tuning observation(s) may be scheduled with a parallel SI or in parallel with other ASIC tuning observation(s), except for NIRCam ASIC Tuning, which must be scheduled as a prime visit and no parallel SI operation (TBD). Note that there is mechanism motion by the user-specified SI during the ASIC tuning visit and that OSS will prevent mechanism motion from occurring during a parallel SI exposure.
The following parameters are used to define ISIM ASIC Tuning observations.
|assign observation number
|provide observation label
|provide observation comments
|specify special requirements
|choose from list
|Template specific information
|select a science instrument
|choose from list
|ASIC Tuning File Name
|specify an ASIC tuning file name
|specify a data volume
|ASIC Tuning Duration
|specify an ASIC tuning duration
SCIENCE INSTRUMENT [INSTRUMENT] = FGS1, FGS2, NIRCAM, NIRISS, NIRSPEC
This field specifies the science instrument configured by ASIC Tuning file. This field is used for scheduling purposes only.
ASIC Tuning File Name
This parameter is used to specify the ASIC tuning FILE NAME [FILE_NAME] with extension (e.g. NRCCMB_003.atu). Note that OPGS will automatically prefix "ram:/" to the filename when generating the visit file.
This parameter specifies the DATA VOLUME [DATA_VOLUME_MIB] generated by the ASIC tuning file in Mebibytes (10242 bytes).
Note to developer: This value is a non-negative integer with no default or upper limit. The label for the field should be MiB.
ASIC Tuning Duration
This parameter specifies the DURATION [DURATION], in hours, needed to execute the ASIC Tuning visit.
Note to developers: This value is a positive real number with no upper limit.
Note to developers: APT should automatically set Target to NONE.
Note for developers: The database visit table values should be:
internal_target = 'Y'
external_target = 'N'
pcs_mode = 'NONE'
schedule_as_parallel = 'N' (TBD)
parallels_allowed = 'N' (TBD)
realtime = 'N'
required = 'Y' -> Special Requirement
science_duration = duration specified by user
overhead_duration = 0
scheduling_duration = duration specified by user
charged_duration = duration specified by user
(All other duration fields in the "visit" relation = 0)