ASTROSAT CZTI

Data Quality Report

Orbit 56759

Creation date: 2026-03-26T06:00:08.253656
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_56759cztM0_level2.fits modeM0/AS1A14_083T05_9000006560_56759cztM0_level2_quad_clean.evt
Size (bytes)541,431,360111,294,720
Size516.3 MB 106.1 MB
Events in quadrant A4,805,024728,157
Events in quadrant B5,929,275744,200
Events in quadrant C5,098,843685,320
Events in quadrant D3,594,118661,639

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0199710
B0232900
C0210210
D0168140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79191952.462432%
B79206418.093434%
C79202783.510101%
D7920130.164141%

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 7919 7919 144 144 1.82% 1.82%
B 7920 7920 397 397 5.01% 5.01%
C 7920 7920 273 273 3.45% 3.45%
D 7920 7920 15 15 0.19% 0.19%

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 573472 2778.72 834 814 206.1
A 3 62 347130 1680.44 834 814 206.1
A 8 249 312057 1510.25 834 814 206.1
B 8 128 1248689 7045.87 812 782 177.1
B 5 185 850658 4798.53 812 782 177.1
B 4 206 282557 1590.94 812 782 177.1
C 14 96 1269513 5768.66 805 797 219.9
C 13 3 405510 1840.17 805 797 219.9
C 6 223 62766 281.76 805 797 219.9
D 2 249 95110 412.1 810 774 228.9
D 5 173 82362 356.41 810 774 228.9
D 11 129 61133 263.67 810 774 228.9

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