ASTROSAT CZTI

Data Quality Report

Orbit 57600

Creation date: 2026-05-21T20:12:58.899507
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_070T08_9000006576_57600cztM0_level2.fits modeM0/AS1A14_070T08_9000006576_57600cztM0_level2_quad_clean.evt
Size (bytes)379,232,64097,246,080
Size361.7 MB 92.7 MB
Events in quadrant A2,906,344632,511
Events in quadrant B3,233,450673,230
Events in quadrant C3,682,280603,269
Events in quadrant D3,693,829568,841

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137651
B0143971
C0158821
D0157891

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67001181.761194%
B67011652.462319%
C67012103.133861%
D67012033.029399%

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 7060 6701 4 4 0.06% 0.06%
B 7061 6702 28 28 0.40% 0.42%
C 7061 6702 133 133 1.88% 1.98%
D 7061 6702 98 98 1.39% 1.46%

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 3 14 44422 248.46 720 702 176.0
A 7 160 27884 154.47 720 702 176.0
A 4 3 16310 88.7 720 702 176.0
B 10 247 103898 689.28 706 678 149.8
B 5 185 82590 546.99 706 678 149.8
B 0 245 57908 382.17 706 678 149.8
C 15 224 843658 4488.56 690 681 187.8
C 12 2 45809 240.29 690 681 187.8
C 12 252 36844 192.55 690 681 187.8
D 15 142 246736 1242.51 697 662 198.0
D 2 249 215957 1087.09 697 662 198.0
D 2 31 130815 657.18 697 662 198.0

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