Atacama Pathfinder EXperiment APEX
SABOCA Calibration
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Home > Instrumentation > SABOCA > SABOCA Calibration > Array parameters

Array parameters October 2008

Main parameter file: saboca-2008-10.rcp

Individual scans

Scan #Date Parameter fileArray plotIndividual channel maps
51753 2008-10-06T04:52 Uranus_51753_Saboca.rcp array_51753.pdf beams_51753.pdf
51766 2008-10-06T05:33 Uranus_51766_Saboca.rcp array_51766.pdf beams_51766.pdf
51772 2008-10-06T05:53 Uranus_51772_Saboca.rcp array_51772.pdf beams_51772.pdf
51773 2008-10-06T06:03 Uranus_51773_Saboca.rcp array_51773.pdf beams_51773.pdf
51786 2008-10-06T06:36 Uranus_51786_Saboca.rcp array_51786.pdf beams_51786.pdf
51788 2008-10-06T06:47 Uranus_51788_Saboca.rcp array_51788.pdf beams_51788.pdf
51790 2008-10-06T06:57 Uranus_51790_Saboca.rcp array_51790.pdf beams_51790.pdf
51792 2008-10-06T07:06 Uranus_51792_Saboca.rcp array_51792.pdf beams_51792.pdf

Notes on individual channels

During October 2008 only 23 out of 37 channels were working properly. Channels 11 - 37 have inverted signals which has to be taken care of during data reduction.

Channel #Description
1, 2, 5, 6, 9, 11, 13, 14, 15, 16, 17, 20, 21, 22 None of these channels shows any astronomical signal. They are considered bad and have to be flagged.

channel_flags-2008-10.boa:

# Inverted channels:
def invertSomeChannels():
    for i in range(len(inverted)):
        num=inverted[i]-1
        data.Data[:,num] *= array(-1,'f')
inverted = range(11,38)
invertSomeChannels()

# Bad channels (no signal)
bad = [  1,  2,  5,  6,  9, 11, 13, 14, 15, 16, 17, 20, 21, 22 ]
flagC(bad)