ASTROSAT CZTI

Data Quality Report

Orbit 58245

Creation date: 2026-07-04T06:27:16.179216
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_044T03_9000006588_58245cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58245cztM0_level2_quad_clean.evt
Size (bytes)1,675,569,600236,759,040
Size1.6 GB 225.8 MB
Events in quadrant A7,963,3741,708,065
Events in quadrant B23,089,4841,348,678
Events in quadrant C10,432,4721,608,897
Events in quadrant D19,123,3871,239,198

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0376873
B0813243
C0444333
D0696067

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18315710.387660%
B18316494226.981874%
C183166043.297663%
D18315345618.869779%

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 19880 18318 17 17 0.09% 0.09%
B 19881 18319 3795 3795 19.09% 20.72%
C 19881 18319 438 438 2.20% 2.39%
D 19880 18318 3080 3080 15.49% 16.81%

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 13 248 100541 202.2 1962 1909 487.8
A 3 14 57153 113.25 1962 1909 487.8
A 3 245 52260 103.22 1962 1909 487.8
B 4 206 7470082 20790.2 1692 1630 359.2
B 6 255 5406064 15044.52 1692 1630 359.2
B 2 249 1659065 4613.86 1692 1630 359.2
C 14 254 837239 1603.41 1887 1868 521.0
C 13 3 691077 1322.87 1887 1868 521.0
C 12 252 599005 1146.14 1887 1868 521.0
D 12 110 7515898 14756.01 1782 1703 509.2
D 3 224 2147509 4213.83 1782 1703 509.2
D 2 249 395255 772.84 1782 1703 509.2

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