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E Glossary  


auto analysis results	auto analysis results (AAR) are the products from
		        the auto-analysis processing

glitch			a glitch is a short duration anomaly in the
			datastream, usually caused by an ionizing
			particle.

in-band power		the power (in W) falling on the detector
			for a filter, aperture, and polariser combination

measurement		see definition section 3.3

preformance verification  the performance verification (PV) phase
			  comprises the first 80 days of the ISO mission
 			  and has been exclusively reserved for instruments
			  check-out, calibrations, and AOT commissioning.

product			a product is a FITS file defined by the Science
			Operations Centre and contains the ISO data for
			official distribution.

observation		An observation refers to the acquisition of the
			scientifically useful data during one AOT by the
			prime instrument requested by the proposer. The
			term "observation" also loosely refers to the
			data products created from the acquired data. An
			observation has a one-to-one association with an
			ISO Observation Number (ION).

ramp			a ramp is formed by the read-outs collected during
			one and the same reset interval

responsivity		the detector responsivity (in A/W) is the ratio
			between electrical current through a detector and
			the illuminating power falling on the detector.

standard processed data	standard processed data (SPD) are the products
			from the standard processing, chapter 7

target dedicated time	a target dedicated time (TDT) is the entire
			contiguous time period scheduled for performing
			the N observations of a concatenated group. (N = 1
			if no concatenation). All overheads, including
			slewing, are included (TDT = observation time plus
			overheads time). The start of a TDT is defined as
			the time of the first AOCS command to point at
			the new target. The end of the TDT is defined as
			the time at which all instrument activities
			connected with the (N) observation(s) have been
			completed. Note that the above restrictions on
			concatenation imply that one TDT can belong to
			only one proposer.

next up previous contents
Next: References Up: ISOPHOT Data Users Manual Previous: D Acronyms

ISOPHOT Data Users Manual, Version 4.1, SAI/95-220/Dc