ASTROSAT CZTI

Data Quality Report

Orbit 20170702_G07_049T01_9000001352_level2

Creation date: 2018-05-18T03:22:42.003142
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information

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date-obs: 2017-07-02
time-obs: 10:27:28.624000000
date-end: 2017-07-04
time-end: 01:07:16.739900000
obs_id: G07_049T01_9000001352
exposure: 114270.018109
sourceid: 4U 1626-67
observer: dedhia
ra_pnt: 248.07
dec_pnt: -67.46091

Basic statistics of files

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Param	Original file	Final file
Filename	modeM0/AS1G07_049T01_9000001352cztM0_level2.evt	modeM0/AS1G07_049T01_9000001352cztM0_level2_quad_clean.evt
Size (bytes)	8,080,145,280	2,188,995,840
Size	7.5 GB	2.0 GB
Events in quadrant A	59,749,090	15,115,217
Events in quadrant B	57,421,410	15,135,694
Events in quadrant C	59,436,239	14,807,396
Events in quadrant D	60,317,549	13,344,944

Level1 data integrity

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Mode M9
Quadrant	BADHDUFLAG	Total packets	Discarded packets
A	0	187	0
B	0	189	0
C	0	186	0
D	0	186	0

Mode M0
Quadrant	BADHDUFLAG	Total packets	Discarded packets
A	0	256307	0
B	0	250333	0
C	0	260518	0
D	0	252011	0

Mode SS
Quadrant	BADHDUFLAG	Total packets	Discarded packets
A	0	2396	0
B	0	2381	0
C	0	2392	0
D	0	2394	0

Data saturation

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Quadrant	Total seconds	Saturated seconds	Saturation percentage
A	117575	1505	1.280034%
B	117654	1550	1.317422%
C	117686	2444	2.076713%
D	107914	2107	1.952481%

Noise dominated fraction

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Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant	# 1 sec bins	Bins with >0 counts	Bins with >2000 counts	High rate bins dominated by noise	Noise dominated (total time)	Noise dominated (detector-on time)
A	139190	119501	33	33	0.02%	0.03%
B	139190	119528	160	160	0.11%	0.13%
C	139190	119588	971	971	0.70%	0.81%