Open File

OPEN_FITS_GZ

See the source code.

This test verifies that a gzip-compressed FITS image file can be opened and rendered correctly.

1. Frontend sends: OPEN_FILE (OpenFile)

   directory = "set_QA"
   file = "tu2310418.fits.gz"
   hdu = "0"
   file_id = 0
   render_mode = RASTER
   

2. Backend returns: OPEN_FILE_ACK (OpenFileAck) and REGION_HISTOGRAM_DATA

Check 1: the OPEN_FILE_ACK should satisfy:

• OPEN_FILE_ACK.success = True

• OPEN_FILE_ACK.fileInfo.name = “tu2310418.fits.gz”

3. Frontend sends: SET_CURSOR at (2268, 2467) and ADD_REQUIRED_TILES (tile [0], ZFP quality 11)

4. Backend returns: SPATIAL_PROFILE_DATA and RASTER_TILE_DATA

Check 2: the RASTER_TILE_DATA count = 3 (1 tile + 2 sync messages)

OPEN_IMAGE_APPEND

See the source code.

This test verifies opening multiple image files sequentially without closing previous ones, confirming that multiple files can be open simultaneously.

1. Frontend sends: OPEN_FILE (OpenFile) for 4 files

   file = "M17_SWex.fits", file_id = 0
   file = "M17_SWex.image", file_id = 1
   file = "M17_SWex.miriad", file_id = 2
   file = "M17_SWex.hdf5", file_id = 3
   

2. For each file, Backend returns: OPEN_FILE_ACK and REGION_HISTOGRAM_DATA

Check 1: for each file, the OPEN_FILE_ACK should satisfy:

• OPEN_FILE_ACK.success = True

• OPEN_FILE_ACK.fileId matches expected file_id

3. For each file, Frontend sends: SET_IMAGE_CHANNELS with ADD_REQUIRED_TILES (tile [0], ZFP quality 11)

4. Backend returns: RASTER_TILE_DATA

Check 2: the RASTER_TILE_DATA for each file should satisfy:

• Tile dimensions: width = 160, height = 200 for all files

• imageData.length > 0

• nanEncodings.length > 0

Check 3: REGION_HISTOGRAM_DATA for each file should satisfy:

• regionId = -1, stokes = 0, progress = 1

OPEN_IMAGE_CASA_VARIENTS

See the source code.

This test verifies opening multiple CASA image variants with different structures and formats.

1. Frontend sends: OPEN_FILE (OpenFile) for 5 CASA image variants

   file = "componentlist.image", file_id = 200
   file = "concatenated.image", file_id = 201
   file = "pVimage.image", file_id = 202
   file = "UVamp.image", file_id = 203
   file = "UVphase.image", file_id = 204
   

2. Backend returns: OPEN_FILE_ACK and REGION_HISTOGRAM_DATA for each file

Check 1: the OPEN_FILE_ACK should satisfy:

• OPEN_FILE_ACK.success = True for all files

Check 2: RASTER_TILE_DATA dimensions should match:

• fileId 200: 256x256

• fileId 201: 189x189

• fileId 202: 160x52 (narrow PV image)

• fileId 203: 150x150

• fileId 204: 150x150

OPEN_IMAGE_PV

See the source code.

This test verifies opening Position-Velocity (PV) images in both FITS and CASA formats.

1. Frontend sends: OPEN_FILE (OpenFile) for 2 PV images

   file = "M17_SWex_pv.fits", file_id = 0
   file = "M17_SWex_pv.image", file_id = 1
   

2. Backend returns: OPEN_FILE_ACK and REGION_HISTOGRAM_DATA for each

Check 1: the OPEN_FILE_ACK should satisfy:

• OPEN_FILE_ACK.success = True

• OPEN_FILE_ACK.fileInfo.name matches filename

Check 2: histogram and tile data should satisfy:

• REGION_HISTOGRAM_DATA.histograms.numBins = 109 for both files

• RASTER_TILE_DATA dimensions: width = 241, height = 13 for both files

OPEN_SWAPPED_IMAGES

See the source code.

This test verifies opening images with different axis orderings to ensure correct handling of swapped axes.

1. Frontend sends: OPEN_FILE (OpenFile) for 5 images with varying axis configurations

   file = "HH211_IQU-swap-rfds.image"   (axes: RA-Freq-Dec-Stokes, 1049x5)
   file = "HH211_IQU-swap-rsdf.image"   (axes: RA-Stokes-Dec-Freq, 1049x1049)
   file = "HH211_IQU.fits"              (axes: RA-Dec-Freq-Stokes, 1049x1049)
   file = "HH211_IQU-swap-fdsr.image"   (axes: Freq-Dec-Stokes-RA, 5x1049)
   file = "supermosaic.10-cutted-stokes-glon-vard-glat.image" (483x51)
   

Check 1: for each image, the OPEN_FILE_ACK should satisfy:

• OPEN_FILE_ACK.success = True

• fileInfoExtended axis numbers and dimensions match expected for each swap pattern

Check 2: cursor values at specific positions should satisfy:

• (510, 2): SpatialProfileData.value = 0.0015299528604373336

• (555, 586): SpatialProfileData.value = 0.00048562639858573675

• (4, 521): SpatialProfileData.value = 0.03848038613796234

• (477, 12): SpatialProfileData.value = 20.193593978881836

OPENFILE_FITS_BEAMTABLE

See the source code.

This test verifies that beam table information is correctly extracted from FITS format files.

1. Frontend sends: OPEN_FILE (OpenFile)

   directory = "set_QA"
   file = "SDC335.579-0.292.spw0.line.fits"
   file_id = 0
   render_mode = RASTER
   

2. Backend returns: OPEN_FILE_ACK (OpenFileAck)

Check 1: the OPEN_FILE_ACK should satisfy:

• OPEN_FILE_ACK.success = True

• fileInfo.type = CARTA.FileType.FITS

• fileInfo.size = 1806465600

• fileInfo.HDUList = [“0”]

Check 2: the beam table entries should match at specific channels:

• Channel 0: majorAxis = 5.927, minorAxis = 4.056, pa = -73.86

• Channel 10: majorAxis = 6.085, minorAxis = 4.215, pa = -76.39

• Channel 200: majorAxis = 6.154, minorAxis = 4.467, pa = -80.17

• Channel 1000: majorAxis = 6.156, minorAxis = 4.468, pa = -80.17

• Channel 2000: majorAxis = 6.158, minorAxis = 4.469, pa = -80.17

• Channel 3839: majorAxis = 6.358, minorAxis = 4.732, pa = -85.62

OPENFILE_CASA_BEAMTABLE

See the source code.

This test verifies that beam table information is correctly extracted from CASA format files.

1. Frontend sends: OPEN_FILE (OpenFile)

   directory = "set_QA"
   file = "SDC335.579-0.292.spw0.line.image"
   file_id = 0
   render_mode = RASTER
   

2. Backend returns: OPEN_FILE_ACK (OpenFileAck)

Check 1: the OPEN_FILE_ACK should satisfy:

• OPEN_FILE_ACK.success = True

• fileInfo.type = CARTA.FileType.CASA

• fileInfo.HDUList = [“”]

Check 2: the beam table entries should match identical values as the FITS beam table test at channels 0, 10, 200, 1000, 2000, and 3839