fps/exposure-1.0.0
FPS Base Exposure Information
Outline
Schema Definitions ¶
This type is an object with the following properties:
type
object Required This node must validate against all of the following:
start_time
tag:stsci.edu:asdf/time/time-1.* Required Exposure Start Time (UTC)
The UTC time at the beginning of the exposure.
ngroups
integer Required Number of Resultants
The number of resultant frames in this exposure that were transmitted to the ground. The number of integrations of WFI data is always 1.
nframes
integer Required Number of Reads
This is the number of science frames that are combined to produce a resultant frame.
data_problem
boolean Required Data Problem
A flag indicating an issue with science telemetry.
frame_divisor
integer Required Frame Divisor
The number of reads averaged to calculate a resultant. Value depends on the readout pattern used from the MultiAccum table.
groupgap
integer Required Number of Frames Dropped Between Resultants
The number of reads that are dropped, or not used to calculate a resultant.
frame_time
number Required Time Between Reads (s)
The amount of time elapsed between the end of one read and the beginning of the next.
group_time
number Required Time Between Resultants (s)
The time that is the sum of the reads that are used to construct a resultant. This will depend on the MA table being used.
exposure_time
number Required Exposure Time (s)
The time between the start of the first Reset/Read Science Frame of an Exposure and the completion of the final Read Only Science Frame of that Exposure.
ma_table_name
string Required MA Table Name
No length restrictionThe name of the MultiAccum table used for this exposure, as defined in the Project Reference Database.
ma_table_number
integer Required MA Table Number
The number of the MultiAccum table used for this exposure. Used in matching exposures to their corresponding calibration data.
read_pattern
array Required Read Pattern
No length restrictionEnumeration of detector reads to resultants making up the L1 data downlinked from the observatory.
Items in the array are restricted to the following types:
No length restrictionarray
Items in the array are restricted to the following types:
integer
Original Schema ¶
%YAML 1.1
---
$schema: asdf://stsci.edu/datamodels/roman/schemas/rad_schema-1.0.0
id: asdf://stsci.edu/datamodels/roman/schemas/fps/exposure-1.0.0
title: |
FPS Base Exposure Information
type: object
properties:
type:
allOf:
- $ref: asdf://stsci.edu/datamodels/roman/schemas/fps/exposure_type-1.0.0
sdf:
special_processing: VALUE_REQUIRED
source:
origin: TBD
archive_catalog:
datatype: nvarchar(25)
destination: [WFICommon.exposure_type]
start_time:
title: Exposure Start Time (UTC)
description: |
The UTC time at the beginning of the exposure.
tag: tag:stsci.edu:asdf/time/time-1.*
sdf:
special_processing: VALUE_REQUIRED
source:
origin: TBD
archive_catalog:
datatype: datetime2
destination: [WFICommon.exposure_start_time]
ngroups:
title: Number of Resultants
description: |
The number of resultant frames in this exposure that were transmitted to
the ground. The number of integrations of WFI data is always 1.
type: integer
sdf:
special_processing: VALUE_REQUIRED
source:
origin: TBD
archive_catalog:
datatype: int
destination: [WFICommon.exposure_ngroups]
nframes:
title: Number of Reads
description: |
This is the number of science frames that are combined to produce a resultant frame.
type: integer
sdf:
special_processing: VALUE_REQUIRED
source:
origin: TBD
archive_catalog:
datatype: int
destination: [WFICommon.exposure_nframes]
data_problem:
title: Data Problem
description: |
A flag indicating an issue with science telemetry.
type: boolean
sdf:
special_processing: VALUE_REQUIRED
source:
origin: TBD
archive_catalog:
datatype: nchar(1)
destination: [WFICommon.exposure_data_problem]
frame_divisor:
title: Frame Divisor
description: |
The number of reads averaged to calculate a resultant. Value depends on
the readout pattern used from the MultiAccum table.
type: integer
sdf:
special_processing: VALUE_REQUIRED
source:
origin: TBD
archive_catalog:
datatype: int
destination: [WFICommon.exposure_frame_divisor]
groupgap:
title: Number of Frames Dropped Between Resultants
description:
The number of reads that are dropped, or not used to calculate a
resultant.
type: integer
sdf:
special_processing: VALUE_REQUIRED
source:
origin: TBD
archive_catalog:
datatype: int
destination: [WFICommon.exposure_groupgap]
frame_time:
title: Time Between Reads (s)
description: |
The amount of time elapsed between the end of one read and the beginning
of the next.
type: number
sdf:
special_processing: VALUE_REQUIRED
source:
origin: TBD
archive_catalog:
datatype: float
destination: [WFICommon.exposure_frame_time]
group_time:
title: Time Between Resultants (s)
description: |
The time that is the sum of the reads that are used to construct a
resultant. This will depend on the MA table being used.
type: number
sdf:
special_processing: VALUE_REQUIRED
source:
origin: TBD
archive_catalog:
datatype: float
destination: [WFICommon.exposure_group_time]
exposure_time:
title: Exposure Time (s)
description: |
The time between the start of the first Reset/Read Science Frame of an
Exposure and the completion of the final Read Only Science Frame of that
Exposure.
type: number
sdf:
special_processing: VALUE_REQUIRED
source:
origin: TBD
archive_catalog:
datatype: float
destination: [WFICommon.exposure_time]
ma_table_name:
title: MA Table Name
description: |
The name of the MultiAccum table used for this exposure, as defined in the
Project Reference Database.
type: string
sdf:
special_processing: VALUE_REQUIRED
source:
origin: TBD
archive_catalog:
datatype: nvarchar(50)
destination: [WFICommon.ma_table_name]
ma_table_number:
title: MA Table Number
description: |
The number of the MultiAccum table used for this exposure. Used in
matching exposures to their corresponding calibration data.
type: integer
sdf:
special_processing: VALUE_REQUIRED
source:
origin: TBD
archive_catalog:
datatype: smallint
destination: [WFICommon.ma_table_number]
read_pattern:
title: Read Pattern
description: |
Enumeration of detector reads to resultants making up the L1 data
downlinked from the observatory.
type: array
items:
type: array
items:
type: integer
sdf:
special_processing: VALUE_REQUIRED
source:
origin: TBD
archive_catalog:
datatype: nvarchar(3500)
destination: [WFICommon.read_pattern]
propertyOrder:
[
type,
start_time,
ngroups,
nframes,
data_problem,
frame_divisor,
groupgap,
frame_time,
group_time,
exposure_time,
ma_table_name,
ma_table_number,
read_pattern,
]
flowStyle: block
required:
[
type,
start_time,
ngroups,
nframes,
data_problem,
frame_divisor,
groupgap,
frame_time,
group_time,
exposure_time,
ma_table_name,
ma_table_number,
read_pattern,
]