Daily Gain Calibration: Difference between revisions
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Similar as reference complex gain calibration, daily gain calibration refers to tuning the "system" amplitude and phase as a function of IF band at a finer level. Typically, daily gain calibration would be carried out three times between two reference gain calibrations every day. We have a routine to retrieve and analyze the daily gain calibration data, named phacal_anal.py. Start from a timestamp | Similar as reference complex gain calibration, daily gain calibration refers to tuning the "system" amplitude and phase as a function of IF band at a finer level. Typically, daily gain calibration would be carried out three times between two reference gain calibrations every day. We have a routine to retrieve and analyze the daily gain calibration data, named phacal_anal.py. Start from a timestamp (Note: The time of day is important! Make sure to set it to somewhere in the middle of the day, e.g. 15:00 UT) | ||
<pre> | <pre> | ||
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phacal_anal will find all daily gain calibrations occurred during that natural day (CA local time). | phacal_anal will find all daily gain calibrations occurred during that natural day (CA local time). | ||
= Commands for calibrating the eclipse [temporary] = | |||
First run the refcal for the day: | |||
<pre> | |||
from util import Time | |||
import refcal_anal as ra | |||
import cal_header as ch | |||
out = ra.rd_refcal(Time(['2017-08-21 11:00','2017-08-21 14:00')) | |||
out_corr = ra.unrot_refcal(out) | |||
refcal = ra.refcal_anal(out) | |||
ch.refcal2s | |||
</pre> | |||
Revision as of 14:13, 20 August 2017
Similar as reference complex gain calibration, daily gain calibration refers to tuning the "system" amplitude and phase as a function of IF band at a finer level. Typically, daily gain calibration would be carried out three times between two reference gain calibrations every day. We have a routine to retrieve and analyze the daily gain calibration data, named phacal_anal.py. Start from a timestamp (Note: The time of day is important! Make sure to set it to somewhere in the middle of the day, e.g. 15:00 UT)
import phacal_anal as pa
from util import Time
t = Time('2017-07-03 15:00')
pa.phacal_anal(t)
phacal_anal will find all daily gain calibrations occurred during that natural day (CA local time).
Commands for calibrating the eclipse [temporary]
First run the refcal for the day:
from util import Time import refcal_anal as ra import cal_header as ch out = ra.rd_refcal(Time(['2017-08-21 11:00','2017-08-21 14:00')) out_corr = ra.unrot_refcal(out) refcal = ra.refcal_anal(out) ch.refcal2s