ASTROSAT CZTI

Data Quality Report

Orbit 56132

Creation date: 2026-02-12T01:44:29.505016
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_083T03_9000006548_56132cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56132cztM0_level2_quad_clean.evt
Size (bytes)742,227,84083,718,720
Size707.8 MB 79.8 MB
Events in quadrant A8,882,276520,794
Events in quadrant B4,451,182594,004
Events in quadrant C9,397,006419,598
Events in quadrant D4,202,973512,490

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0312682
B0181062
C0328012
D0176832

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6997128918.422181%
B69984105.858817%
C6997198628.383593%
D69971432.043733%

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 7719 7266 1212 1212 15.70% 16.68%
B 7720 7267 226 226 2.93% 3.11%
C 7719 7267 1681 1681 21.78% 23.13%
D 7719 7267 128 128 1.66% 1.76%

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 3 14 3019399 17351.12 696 678 174.0
A 12 115 2712970 15589.82 696 678 174.0
A 8 237 127521 729.07 696 678 174.0
B 5 172 810982 5226.14 727 702 155.0
B 10 247 179397 1152.55 727 702 155.0
B 8 128 97727 625.79 727 702 155.0
C 9 38 2703506 16138.95 608 603 167.5
C 15 147 2303016 13747.64 608 603 167.5
C 15 148 1207156 7204.29 608 603 167.5
D 8 129 331447 1649.61 706 674 200.5
D 8 240 331071 1647.74 706 674 200.5
D 2 249 216392 1075.82 706 674 200.5

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