2 from lsst.ip.isr import (Linearizer, CrosstalkCalib, Defects, BrighterFatterKernel)
10 """Read data for a particular sensor from the standard format at a particular root.
15 Path to the top level of the data tree. This is expected to hold directories
16 named after the sensor names. They are expected to be lower case.
18 The name of the sensor for which to read data.
20 The identifier for the sensor in question.
25 A dictionary of objects constructed from the appropriate factory class.
26 The key is the validity start time as a `datetime` object.
28 factory_map = {
'qe_curve': Curve,
'defects': Defects,
'linearizer': Linearizer,
29 'crosstalk': CrosstalkCalib,
'bfk': BrighterFatterKernel}
31 extensions = (
".ecsv",
".yaml")
32 for ext
in extensions:
33 files.extend(glob.glob(os.path.join(root, chip_name, f
"*{ext}")))
34 parts = os.path.split(root)
35 instrument = os.path.split(parts[0])[1]
37 if data_name
not in factory_map:
38 raise ValueError(f
"Unknown calibration data type, '{data_name}' found. "
39 f
"Only understand {','.join(k for k in factory_map)}")
40 factory = factory_map[data_name]
43 date_str = os.path.splitext(os.path.basename(f))[0]
44 valid_start = dateutil.parser.parse(date_str)
45 data_dict[valid_start] = factory.readText(f)
46 check_metadata(data_dict[valid_start], valid_start, instrument, chip_id, f, data_name)
47 return data_dict, data_name
50 def check_metadata(obj, valid_start, instrument, chip_id, filepath, data_name):
51 """Check that the metadata is complete and self consistent
55 obj : object of same type as the factory
56 Object to retrieve metadata from in order to compare with
57 metadata inferred from the path.
58 valid_start : `datetime`
59 Start of the validity range for data
61 Name of the instrument in question
63 Identifier of the sensor in question
65 Path of the file read to construct the data
67 Name of the type of data being read
76 If the metadata from the path and the metadata encoded
77 in the path do not match for any reason.
79 md = obj.getMetadata()
80 finst = md[
'INSTRUME']
81 fchip_id = md[
'DETECTOR']
82 fdata_name = md[
'OBSTYPE']
83 if not ((finst.lower(), int(fchip_id), fdata_name.lower())
84 == (instrument.lower(), chip_id, data_name.lower())):
85 raise ValueError(f
"Path and file metadata do not agree:\n"
86 f
"Path metadata: {instrument} {chip_id} {data_name}\n"
87 f
"File metadata: {finst} {fchip_id} {fdata_name}\n"
88 f
"File read from : %s\n"%(filepath)
93 """Read all data from the standard format at a particular root.
98 Path to the top level of the data tree. This is expected to hold directories
99 named after the sensor names. They are expected to be lower case.
100 camera : `lsst.afw.cameraGeom.Camera`
101 The camera that goes with the data being read.
106 A dictionary of dictionaries of objects constructed with the appropriate factory class.
107 The first key is the sensor name lowered, and the second is the validity
108 start time as a `datetime` object.
112 Each leaf object in the constructed dictionary has metadata associated with it.
113 The detector ID may be retrieved from the DETECTOR entry of that metadata.
115 root = os.path.normpath(root)
116 dirs = os.listdir(root)
117 dirs = [d
for d
in dirs
if os.path.isdir(os.path.join(root, d))]
119 name_map = {det.getName().lower(): det.getName()
for
123 raise RuntimeError(f
"No data found on path {root}")
127 chip_name = os.path.basename(d)
130 if chip_name
not in name_map:
131 detectors = [det
for det
in camera.getNameIter()]
134 if len(detectors) > max_detectors:
136 note_str =
"examples"
137 detectors = detectors[:max_detectors]
138 raise RuntimeError(f
"Detector {chip_name} not known to supplied camera "
139 f
"{camera.getName()} ({note_str}: {','.join(detectors)})")
140 chip_id = camera[name_map[chip_name]].getId()
141 data_by_chip[chip_name], calib_type =
read_one_chip(root, chip_name, chip_id)
142 calib_types.add(calib_type)
143 if len(calib_types) != 1:
144 raise ValueError(f
'Error mixing calib types: {calib_types}')
146 no_data = all([v == {}
for v
in data_by_chip.values()])
148 raise RuntimeError(
"No data to ingest")
150 return data_by_chip, calib_type
def check_metadata(obj, valid_start, instrument, chip_id, filepath, data_name)
def read_all(root, camera)
def read_one_chip(root, chip_name, chip_id)