Bases: KPFFunction
Obtains CRED2 "trigger file" data cubes under dark conditions at each of
the three gain settings for the detector.
Sequence:
- Set FIU to Stowed
- Set kpfguide.SENSORSETP = -40
- Wait for temperature to reach target
- modify -s kpfexpose SRC_SHUTTERS=''
- Set FPS = 100
- Set GAIN = High
- Take 10s trigger cube
- Set GAIN = High
- Take 10s trigger cube
- Set GAIN = Low
- Take 10s trigger cube
- Set kpfguide.SENSORSETP = 0
Source code in kpf/guider/CollectGuiderDarkCubes.py
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119 | class CollectGuiderDarkCubes(KPFFunction):
'''Obtains CRED2 "trigger file" data cubes under dark conditions at each of
the three gain settings for the detector.
Sequence:
- Set FIU to Stowed
- Set kpfguide.SENSORSETP = -40
- Wait for temperature to reach target
- modify -s kpfexpose SRC_SHUTTERS=''
- Set FPS = 100
- Set GAIN = High
- Take 10s trigger cube
- Set GAIN = High
- Take 10s trigger cube
- Set GAIN = Low
- Take 10s trigger cube
- Set kpfguide.SENSORSETP = 0
'''
@classmethod
@obey_scriptrun
def pre_condition(cls, args):
pass
@classmethod
@register_script(Path(__file__).name, os.getpid())
@add_script_log(Path(__file__).name.replace(".py", ""))
def perform(cls, args):
output_file = Path('/s/sdata1701/CRED2DarkCubes/CRED2_dark_cubes.txt')
OUTDIR = ktl.cache('kpfguide', 'OUTDIR')
original_OUTDIR = OUTDIR.read()
new_OUTDIR = str(output_file.parent)
log.debug(f'Setting OUTDIR to {new_OUTDIR}')
OUTDIR.write(new_OUTDIR)
SENSORSETP = ktl.cache('kpfguide', 'SENSORSETP')
SENSORTEMP = ktl.cache('kpfguide', 'SENSORTEMP')
CONTINUOUS = ktl.cache('kpfguide', 'CONTINUOUS')
kpfguide = ktl.cache('kpfguide')
try:
log.info('Taking CRED2 dark cubes')
ConfigureFIU.execute({'mode': 'Stowed'})
log.info('Cooling CRED2')
SENSORSETP.write(-40)
log.info('Waiting up to 10 minutes for detector to reach set point')
reached_temp = SENSORTEMP.waitFor("<-39.9", timeout=600)
if reached_temp == False:
log.error('CRED2 failed to reach set point. Exiting.')
SENSORSETP.write(0)
return
check_scriptstop()
log.debug('Waiting additional time for temperature to stabilize')
time.sleep(60) # shim to give time to stabilize
check_scriptstop()
log.debug('Closing source shutters')
SetSourceSelectShutters.execute({})
CONTINUOUS.write('Active')
SetGuiderFPS.execute({'GuideFPS': 100})
for gain in ['high', 'medium', 'low']:
log.info(f'Collecting {gain} gain cube')
SetGuiderGain.execute({'GuideCamGain': gain})
cube_file = TakeGuiderCube.execute({'duration': 10})
with open(output_file, 'a') as f:
f.write(f"{gain:12s}, {cube_file}\n")
check_scriptstop()
time.sleep(30) # shim to give time to recover after writing cube
check_scriptstop()
for gain in ['high', 'medium', 'low']:
sub_file = kpfguide[f'SUB_{gain.upper()}'].read()
kpfguide[f'SUB_{gain.upper()}'].write('')
log.info(f'Collecting {gain} gain cube without bias subtraction')
SetGuiderGain.execute({'GuideCamGain': gain})
cube_file = TakeGuiderCube.execute({'duration': 10})
with open(output_file, 'a') as f:
gain_string = f'{gain}_nosub'
f.write(f"{gain_string:12s}, {cube_file}\n")
kpfguide[f'SUB_{gain.upper()}'].write(sub_file)
check_scriptstop()
time.sleep(30) # shim to give time to recover after writing cube
check_scriptstop()
except Exception as e:
log.error('Error running CollectGuiderDarkCubes')
log.debug(e)
log.info('Resetting CRED2 temperature set point to 0')
SENSORSETP.write(0)
log.debug(f'Setting OUTDIR to {original_OUTDIR}')
OUTDIR.write(original_OUTDIR)
clear_script_keywords()
@classmethod
def post_condition(cls, args):
pass
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