HawcPlusDetectorArrayInfo

class sofia_redux.scan.custom.hawc_plus.info.detector_array.HawcPlusDetectorArrayInfo

Bases: SofiaDetectorArrayInfo

Initialize the HAWC+ detector array information.

Contains information specific to the HAWC+ detector array.

Attributes Summary

DARK_SQUID_ROW
FITS_CHANNELS
FITS_COLS
FITS_ROWS
JUMP_RANGE
MCE_BIAS_LINES
POL_ID
R0
R1
R_ARRAY
T0
T1
T_ARRAY
default_boresight_index
hwp_step
pixels
pol_array_pixels
pol_arrays
pol_cols
pol_subarrays
rows
subarray_cols
subarray_pixels
subarrays

Methods Summary

apply_configuration()	Apply the configuration to the detector array.
create_dark_squid_lookup(channels)	Store dark squid pixels (blind channels) in a lookup array.
get_sibs_position(sub, row, col)	Given a subarray, row, and column, return the pixel position.
get_subarray_id(subarray)	Return the subarray string ID.
initialize_channel_data(data)	Apply this information to create and populate the channel data.
load_detector_configuration()	Apply the configuration to set various parameters for the detector.
parse_configuration_hdu(hdu)	Parse the data from a configuration HDU and apply to the header data.
select_subarrays([specification])	Select the detector subarrays to be included in the detector array.
set_boresight()	Set the boresight index of the detector array.
set_hwp_header()	Set the HWP angle of the detector array.

Attributes Documentation

DARK_SQUID_ROW = 40

FITS_CHANNELS = 5248

FITS_COLS = 128

FITS_ROWS = 41

JUMP_RANGE = 128

MCE_BIAS_LINES = 20

POL_ID = ('R', 'T')

R0 = 0

R1 = 1

R_ARRAY = 0

T0 = 2

T1 = 3

T_ARRAY = 1

default_boresight_index = x=33.5 y=19.5 <sofia_redux.scan.coordinate_systems.coordinate_2d.Coordinate2D object>

hwp_step = <Quantity 0.25 deg>

pixels = 5248

pol_array_pixels = 2624

pol_arrays = 2

pol_cols = 64

pol_subarrays = 2

rows = 41

subarray_cols = 32

subarray_pixels = 1312

subarrays = 4

Methods Documentation

apply_configuration()

Apply the configuration to the detector array.

Returns:

None

create_dark_squid_lookup(channels)

Store dark squid pixels (blind channels) in a lookup array.

The lookup array is of the form lookup[sub, col] = fixed_index. Invalid values are marked with values of -1 (good pixels).

Parameters:

channelsHawcPlusChannels

Returns:

None

get_sibs_position(sub, row, col)

Given a subarray, row, and column, return the pixel position.

The SIBS position are in tEl, tXel coordinates in units of the pixel_xy_size attribute.

Parameters:

subint or numpy.ndarray (int)

The detector subarray index.

rowint or float or numpy.ndarray (int or float)

The channel/pixel detector row.

colint or float or numpy.ndarray (int or float)

The channel/pixel detector column.

Returns:

positionCoordinate2D

The pixel (x, y) pixel positions.

get_subarray_id(subarray)

Return the subarray string ID.

Parameters:

subarrayint

Returns:

str

initialize_channel_data(data)

Apply this information to create and populate the channel data.

The following attributes are determined from the detector:

- col: The column on the subarray (index mod sub_cols)
- row: The row on the array (index div sub_cols)
- sub: The subarray index (index div sub_pixels)
- pol: The polarization index of the subarray (sub // 2)
- fits_row: The FITS row index (row mod detector_rows)
- fits_col: The FITS column index (sub * sub_cols) + col
- subrow: The row on the subarray (row mod detector_rows)
- mux: Multiplexer readout index (sub * sub_cols) + col
- bias_line: The SQUID detector bias index (row // 2)
- series_array: The second stage SQUID series array (mux // 4)
- fits_index: The index on the FITS file (fits_row * 128) + fits_row

Additionally, the channel string ID is set to:

<SubPolID>[<subrow>,<col>]

where subrow and col are described above and SubPolID may be one of {R0, R1, T0, R1} where R relates to sub=0 and T relates to sub=1, and the second character represents pol.

Parameters:

dataHawcPlusChannelData

Returns:

None

load_detector_configuration()

Apply the configuration to set various parameters for the detector.

Returns:

None

parse_configuration_hdu(hdu)

Parse the data from a configuration HDU and apply to the header data.

Parameters:

hdufits.BinTableHDU

Returns:

None

select_subarrays(specification=None)

Select the detector subarrays to be included in the detector array.

Parameters:

specificationstr, optional

A string specifying which subarrays to select. If not supplied, will be extracted from the ‘subarray’ setting in the configuration.

Returns:

None

set_boresight()

Set the boresight index of the detector array.

Returns:

None

set_hwp_header()

Set the HWP angle of the detector array.

Note that the angle is stored as an integer value indicating the number of HWP steps.

Returns:

None