ASTROSAT CZTI

Data Quality Report

Orbit 57123

Creation date: 2026-04-19T18:19:54.082063
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_083T10_9000006566_57123cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57123cztM0_level2_quad_clean.evt
Size (bytes)522,653,760101,373,120
Size498.4 MB 96.7 MB
Events in quadrant A3,525,768698,413
Events in quadrant B3,278,040752,433
Events in quadrant C8,206,504479,379
Events in quadrant D3,769,519632,005

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151650
B0151090
C0294620
D0162990

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7288280.384193%
B7288360.493963%
C7288212829.198683%
D7288650.891877%

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 7288 7288 0 0 0.00% 0.00%
B 7288 7288 6 6 0.08% 0.08%
C 7288 7288 1905 1905 26.14% 26.14%
D 7288 7288 59 59 0.81% 0.81%

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 413204 2082.12 798 778 198.1
A 10 251 14702 70.29 798 778 198.1
A 13 254 9942 46.26 798 778 198.1
B 0 213 41223 240.69 783 753 168.1
B 10 247 27060 156.46 783 753 168.1
B 0 245 25700 148.37 783 753 168.1
C 15 198 4307281 24694.23 638 632 174.4
C 12 254 668094 3827.21 638 632 174.4
C 12 252 410189 2348.39 638 632 174.4
D 3 12 204661 935.73 775 740 217.9
D 2 249 145129 662.55 775 740 217.9
D 15 142 77675 353.03 775 740 217.9

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