ASTROSAT CZTI

Data Quality Report

Orbit 16123

Creation date: 2024-06-27T17:18:18.077907
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1T02_094T01_9000002380_16123cztM0_level2.evt modeM0/AS1T02_094T01_9000002380_16123cztM0_level2_quad_clean.evt
Size (bytes)542,404,800110,335,680
Size517.3 MB 105.2 MB
Events in quadrant A3,822,700760,997
Events in quadrant B3,737,161755,321
Events in quadrant C3,340,926708,154
Events in quadrant D5,100,297678,616

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155653
B0150612
C0138092
D0193782

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62821041.655524%
B62821552.467367%
C62821111.766953%
D62824777.593123%

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 7553 6283 31 31 0.41% 0.49%
B 7553 6283 62 62 0.82% 0.99%
C 7553 6283 1 1 0.01% 0.02%
D 7552 6282 453 453 6.00% 7.21%

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 0 253 364787 2149.26 851 836 169.3
A 15 174 169174 994.09 851 836 169.3
A 9 143 10404 56.5 851 836 169.3
B 15 201 85253 539.75 833 814 156.4
B 7 220 80840 511.54 833 814 156.4
B 0 244 78205 494.7 833 814 156.4
C 3 233 137998 757.77 787 796 181.1
C 14 238 124738 684.54 787 796 181.1
C 0 207 6703 32.62 787 796 181.1
D 1 52 1500551 7702.04 795 772 194.7
D 7 38 259706 1329.74 795 772 194.7
D 5 222 179727 919.01 795 772 194.7

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