ASTROSAT CZTI

Data Quality Report

Orbit 20170325_G06_168T15_9000001110_level2

Creation date: 2017-09-23T13:02:07.970592
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


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1G06_168T15_9000001110cztM0_level2.evt modeM0/AS1G06_168T15_9000001110cztM0_level2_quad_clean.evt
Size (bytes)768,456,000139,086,720
Size732.9 MB 132.6 MB
Events in quadrant A5,505,611850,002
Events in quadrant B5,293,044879,321
Events in quadrant C5,075,138876,879
Events in quadrant D6,633,985824,996

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02300
B02300
C02300
D02300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0245620
B0236290
C0232020
D0278140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A112932892.559107%
B112931100.974055%
C11293460.407332%
D112912752.435568%

Noise dominated fraction

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) Marked lightcurve
A 12403 11296 160 160 1.29% 1.42%
B 12403 11296 9 9 0.07% 0.08%
C 12403 11296 0 0 0.00% 0.00%
D 12403 11296 204 204 1.64% 1.81%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 4 2 544800 2072.32 1285 1254 262.3
A 0 226 11862 40.44 1285 1254 262.3
A 12 194 11312 38.35 1285 1254 262.3
B 5 250 99142 387.76 1307 1272 252.4
B 4 81 68365 265.82 1307 1272 252.4
B 12 111 27883 105.43 1307 1272 252.4
C 1 16 101899 341.4 1270 1272 294.7
C 14 67 14496 44.87 1270 1272 294.7
C 13 61 9661 28.46 1270 1272 294.7
D 1 52 1191722 3732.15 1241 1209 319.0
D 4 95 305537 954.04 1241 1209 319.0
D 2 136 182645 568.78 1241 1209 319.0

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter