pynrc.detops.multiaccum

class pynrc.detops.multiaccum(read_mode='RAPID', nint=1, ngroup=1, nf=1, nd1=0, nd2=0, nd3=0, nr1=1, nr2=1, wind_mode='FULL', **kwargs)

Bases: object

A class for defining MULTIACCUM ramp settings. See NIRCam MULTIACCUM documentation for more details.

Parameters

• read_mode (str) – NIRCam Ramp Readout mode such as ‘RAPID’, ‘BRIGHT1’, ‘DEEP8’, etc., or ‘CUSTOM’

• nint (int) – Number of integrations (ramps).

• ngroup (int) – Number of groups in a integration.

• nf (int) – Number of frames per group.

• nd1 (int) – Number of drop frame after reset (before first group read). Default=0.

• nd2 (int) – Number of drop frames within a group (ie., groupgap).

• nd3 (int) – Number of drop frames after final read frame in ramp. Default=1.

• nr1 (int) – Number of reset frames within first ramp. Default=0.

• nr2 (int) – Number of reset frames for subsequent ramps. Default=1.

• wind_mode (str) – Set to determine maximum number of allowed groups.

Notes

NIRCam-specific readout modes

Pattern	NF	ND2
RAPID	1	0
BRIGHT1	1	1
BRIGHT2	2	0
SHALLOW2	2	3
SHALLOW4	4	1
MEDIUM2	2	8
MEDIUM8	8	2
DEEP2	2	18
DEEP8	8	12

__init__(read_mode='RAPID', nint=1, ngroup=1, nf=1, nd1=0, nd2=0, nd3=0, nr1=1, nr2=1, wind_mode='FULL', **kwargs)

Methods

__init__([read_mode, nint, ngroup, nf, nd1, ...])
to_dict([verbose])	Export ramp settings to a dictionary.

Attributes

nd1	Number of drop frame after reset (before first group read).
nd2	Number of drop frames within a group (aka, groupgap).
nd3	Number of drop frames after final read frame in ramp.
nf	Number of frames per group.
ngroup	Number of groups in a ramp (integration).
nint	Number of ramps (integrations) in an exposure.
nr1	Number of reset frames before first integration.
nr2	Number of reset frames for subsequent integrations.
nread_tot	Total number of read frames in a ramp, including drops
patterns_list	Allowed NIRCam MULTIACCUM patterns
read_mode	Selected Read Mode in the patterns_list attribute.

property nd1

Number of drop frame after reset (before first group read).

property nd2

Number of drop frames within a group (aka, groupgap).

property nd3

Number of drop frames after final read frame in ramp.

property nf

Number of frames per group.

property ngroup

Number of groups in a ramp (integration).

property nint

Number of ramps (integrations) in an exposure.

property nr1

Number of reset frames before first integration.

property nr2

Number of reset frames for subsequent integrations.

property nread_tot

Total number of read frames in a ramp, including drops

property patterns_list

Allowed NIRCam MULTIACCUM patterns

property read_mode

Selected Read Mode in the patterns_list attribute.

to_dict(verbose=False)

Export ramp settings to a dictionary.