ASTROSAT CZTI

Data Quality Report

Orbit 56744

Creation date: 2026-03-25T18:12:34.295714
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_9000006560_56744cztM0_level2.fits modeM0/AS1A14_083T05_9000006560_56744cztM0_level2_quad_clean.evt
Size (bytes)566,444,160110,232,000
Size540.2 MB 105.1 MB
Events in quadrant A4,767,119723,708
Events in quadrant B6,020,170735,033
Events in quadrant C5,089,194666,348
Events in quadrant D4,475,913661,261

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198002
B0232832
C0210912
D0190512

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79233544.468005%
B792481910.335689%
C79246358.013629%
D79241511.905603%

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 8088 7925 223 223 2.76% 2.81%
B 8089 7926 380 380 4.70% 4.79%
C 8089 7926 365 365 4.51% 4.61%
D 8089 7926 145 145 1.79% 1.83%

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 62 775861 3728.5 849 826 207.9
A 3 14 550476 2644.23 849 826 207.9
A 10 251 121543 580.74 849 826 207.9
B 5 185 1254621 7142.83 814 783 175.5
B 4 206 1138146 6479.3 814 783 175.5
B 10 16 109094 617.02 814 783 175.5
C 1 12 1373553 6217.35 804 795 220.8
C 15 230 284580 1285.29 804 795 220.8
C 12 252 65309 292.19 804 795 220.8
D 2 249 729287 3111.7 826 787 234.1
D 2 31 107028 453.8 826 787 234.1
D 5 222 87560 370.64 826 787 234.1

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