ASTROSAT CZTI

Data Quality Report

Orbit 55568

Creation date: 2026-01-05T02:56:51.331182
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_021T06_9000006538_55568cztM0_level2.fits modeM0/AS1A14_021T06_9000006538_55568cztM0_level2_quad_clean.evt
Size (bytes)558,734,400106,859,520
Size532.9 MB 101.9 MB
Events in quadrant A5,363,421677,016
Events in quadrant B3,592,125764,384
Events in quadrant C5,615,028635,507
Events in quadrant D5,512,327621,458

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216760
B0166390
C0222660
D0220920

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77235016.487116%
B7723530.686262%
C77235867.587725%
D77233614.674349%

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 7723 7723 459 459 5.94% 5.94%
B 7723 7723 31 31 0.40% 0.40%
C 7723 7723 548 548 7.10% 7.10%
D 7723 7723 359 359 4.65% 4.65%

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 4 159 1771367 9140.0 779 758 193.7
A 0 8 352323 1814.8 779 758 193.7
A 15 32 117418 602.21 779 758 193.7
B 4 206 217721 1282.53 785 758 169.2
B 7 252 99254 582.24 785 758 169.2
B 4 169 65274 381.37 785 758 169.2
C 9 38 1219802 5865.56 756 750 207.8
C 15 148 753367 3621.27 756 750 207.8
C 6 223 198713 952.51 756 750 207.8
D 11 129 912390 4231.46 763 731 215.4
D 8 128 357017 1653.7 763 731 215.4
D 5 222 337891 1564.93 763 731 215.4

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