ASTROSAT CZTI

Data Quality Report

Orbit 20190716_A05_022T08_9000003036_level2

Creation date: 2019-07-18T10:20:01.015589
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/AS1A05_022T08_9000003036cztM0_level2_bc.evt modeM0/AS1A05_022T08_9000003036cztM0_level2_quad_clean.evt
Size (bytes)1,376,020,800463,991,040
Size1.3 GB 442.5 MB
Events in quadrant A9,230,4812,966,236
Events in quadrant B9,110,0812,985,324
Events in quadrant C8,790,2452,809,762
Events in quadrant D11,960,7392,693,999

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07760
B07760
C07760
D07760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0822210
B0827350
C0822550
D0923280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A378114521.195419%
B378114791.266827%
C378115431.436090%
D3781110792.853667%

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 45672 37813 42 42 0.09% 0.11%
B 45672 37813 2 2 0.00% 0.01%
C 45672 37812 3 3 0.01% 0.01%
D 45672 37812 174 174 0.38% 0.46%

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 6 16 1043481 2287.18 2104 2069 455.3
A 14 111 24644 49.58 2104 2069 455.3
A 8 205 23735 47.58 2104 2069 455.3
B 7 220 322732 812.91 2111 2062 394.5
B 0 197 135859 339.18 2111 2062 394.5
B 0 189 121271 302.2 2111 2062 394.5
C 9 221 552826 1188.55 1985 1978 463.5
C 8 208 501580 1077.98 1985 1978 463.5
C 3 233 47729 98.72 1985 1978 463.5
D 1 52 1214211 2612.5 2003 1931 464.0
D 13 153 924609 1988.4 2003 1931 464.0
D 7 38 589060 1265.28 2003 1931 464.0

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