ASTROSAT CZTI

Data Quality Report

Orbit 20180511_G08_045T01_9000002092_level2

Creation date: 2025-11-22T08:09:15.677422
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/AS1G08_045T01_9000002092cztM0_level2.fits modeM0/AS1G08_045T01_9000002092cztM0_level2_quad_clean.evt
Size (bytes)574,701,120583,608,960
Size548.1 MB 556.6 MB
Events in quadrant A3,610,6483,676,639
Events in quadrant B3,232,6443,528,389
Events in quadrant C3,487,7343,367,172
Events in quadrant D3,004,7243,037,498

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0950
B0950
C0950
D0950

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012020
B012020
C012020
D012020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01256810
B01984120
C01260120
D01585390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A592866641.119995%
B59286885114.929326%
C592864720.796141%
D5928612462.101677%

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 68586 59284 0 0 0.00% 0.00%
B 68586 59257 0 0 0.00% 0.00%
C 68586 59286 0 0 0.00% 0.00%
D 68586 59281 0 0 0.00% 0.00%

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 29 3406 10.74 942 883 235.0
A 7 110 2991 8.97 942 883 235.0
A 9 19 2801 8.16 942 883 235.0
B 2 9 2782 11.64 853 815 169.0
B 5 128 2188 8.12 853 815 169.0
B 5 225 2115 7.69 853 815 169.0
C 1 81 2698 7.69 920 855 239.8
C 1 80 2606 7.3 920 855 239.8
C 12 241 2472 6.74 920 855 239.8
D 3 14 2203 6.13 858 779 232.3
D 6 231 2138 5.85 858 779 232.3
D 7 3 2114 5.75 858 779 232.3

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