ASTROSAT CZTI

Data Quality Report

Orbit 20251016_A14_126T19_9000006518_level2

Creation date: 2025-11-12T15:16:28.316683
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_126T19_9000006518cztM0_level2.fits modeM0/AS1A14_126T19_9000006518cztM0_level2_quad_clean.evt
Size (bytes)968,042,880511,424,640
Size923.2 MB 487.7 MB
Events in quadrant A7,361,8032,550,842
Events in quadrant B6,511,1672,488,076
Events in quadrant C6,478,4522,160,503
Events in quadrant D942,984278,642

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029600
B029620
C029540
D029590

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03091050
B04169420
C04997890
D0618030

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07110
B07120
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14559819681.351667%
B1454731467010.084346%
C1455002358616.210309%
D2239712245.465018%

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 157777 139874 0 0 0.00% 0.00%
B 157777 139708 0 0 0.00% 0.00%
C 157777 139727 0 0 0.00% 0.00%
D 25368 22741 0 0 0.00% 0.00%

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 14 188 8219 9.86 1932 1779 653.2
A 9 255 7362 8.55 1932 1779 653.2
A 14 204 6729 7.58 1932 1779 653.2
B 2 9 7530 14.7 1721 1625 401.7
B 2 8 6736 12.72 1721 1625 401.7
B 3 25 5424 9.46 1721 1625 401.7
C 15 175 5559 6.64 1729 1571 600.9
C 15 127 5163 5.98 1729 1571 600.9
C 2 31 5124 5.91 1729 1571 600.9
D 6 218 1118 9.57 268 236 92.1
D 15 11 929 7.52 268 236 92.1
D 3 30 891 7.11 268 236 92.1

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