ASTROSAT CZTI

Data Quality Report

Orbit 56440

Creation date: 2026-03-04T19:15:03.657049
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/AS1A14_083T05_9000006554_56440cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56440cztM0_level2_quad_clean.evt
Size (bytes)1,041,071,04079,577,280
Size992.8 MB 75.9 MB
Events in quadrant A11,622,068466,951
Events in quadrant B5,199,648761,783
Events in quadrant C15,133,51051,206
Events in quadrant D5,995,643602,666

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0397370
B0206940
C0501210
D0232480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7566283537.470262%
B75661832.418715%
C7567702992.890181%
D75675827.691291%

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 7566 7566 2706 2706 35.77% 35.77%
B 7566 7566 80 80 1.06% 1.06%
C 7567 7567 4216 4216 55.72% 55.72%
D 7567 7567 548 548 7.24% 7.24%

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 12 3 5821104 35081.51 659 641 165.9
A 3 62 800783 4822.67 659 641 165.9
A 12 194 746545 4495.77 659 641 165.9
B 4 21 1465846 8481.09 806 777 172.7
B 10 247 119719 688.54 806 777 172.7
B 1 159 80888 463.75 806 777 172.7
C 12 254 14173663 377473.78 131 129 37.5
C 1 16 313665 8350.18 131 129 37.5
C 15 209 37107 984.81 131 129 37.5
D 2 249 1619482 7446.11 768 734 217.4
D 11 176 577803 2654.47 768 734 217.4
D 14 52 250143 1147.26 768 734 217.4

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