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fix(hfb): Fixing HFBAlign task #261

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fix(hfb): Fixing HFBAlign task #261

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22 changes: 15 additions & 7 deletions ch_pipeline/hfb/analysis.py
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Original file line number Diff line number Diff line change
Expand Up @@ -320,8 +320,6 @@ class HFBAlignEWBeams(task.SingleTask):
def setup(self):
"""Load offsets and reference angles from CHIME/FRB beam model."""

from beam_model.formed import FFTFormedActualBeamModel

# Get the offsets in CHIME/FRB x coord (in deg) of the EW beams and the
# reference zenith angles (CHIME/FRB y coord; in deg) of the NS beams
# from the CHIME/FRB beam model
Expand All @@ -345,12 +343,23 @@ def process(self, stream):

from ch_util.ephemeris import bmxy_to_hadec

stream.redistribute("el")

data = stream.hfb[:]
weight = stream.weight[:]
ns_beam = stream.beam_ns[:]
ew_beam = stream.beam_ew[:]

# Change data and weights to numpy array, so that it can be reshaped
if isinstance(data, mpiarray.MPIArray):
local_ns = data.local_bounds
ns_beam = ns_beam[local_ns]
data = data.local_array
weight = weight.local_array

# Find CHIME/FRB XY coordinates of beams
x_beam_list = self.ew_beam_offset_deg[stream.beam_ew]
y_beam_list = self.ns_reference_angles_deg[stream.beam_ns]
x_beam_list = self.ew_beam_offset_deg[ew_beam]
y_beam_list = self.ns_reference_angles_deg[ns_beam]

# Compute hour angles of beams
x_beam_grid, y_beam_grid = np.meshgrid(x_beam_list, y_beam_list)
Expand All @@ -360,7 +369,7 @@ def process(self, stream):
data_aligned = np.zeros_like(data)
weight_aligned = np.zeros_like(weight)

for insb, nsb in enumerate(stream.beam_ns):
for insb, nsb in enumerate(ns_beam):
for iewb, ewb in enumerate(stream.beam_ew):
# Compute actual RA of samples per beam
ra_true = stream.ra - ha_beam[insb, ewb]
Expand All @@ -377,8 +386,7 @@ def process(self, stream):
y=data[iewb, insb, :, :],
w=weight[iewb, insb, :, :],
xeval=stream.ra,
mode="wrap",
xperiod=360.0,
mode="zero",
)

# Create output container; add data and weights
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