ASTROSAT CZTI

Data Quality Report

Orbit 53518

Creation date: 2025-08-20T03:12:20.185354
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_004T04_9000006500_53518cztM0_level2.fits modeM0/AS1A14_004T04_9000006500_53518cztM0_level2_quad_clean.evt
Size (bytes)749,024,640110,234,880
Size714.3 MB 105.1 MB
Events in quadrant A6,379,581773,128
Events in quadrant B4,583,481816,089
Events in quadrant C9,356,772562,384
Events in quadrant D6,818,073656,612

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242340
B0189680
C0331012
D0257330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76113644.782552%
B76111401.839443%
C7611178623.466036%
D76116879.026409%

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 7611 7611 296 296 3.89% 3.89%
B 7611 7611 64 64 0.84% 0.84%
C 7611 7611 1415 1415 18.59% 18.59%
D 7611 7611 682 682 8.96% 8.96%

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 62 1254391 5938.37 835 816 211.1
A 3 63 983505 4655.14 835 816 211.1
A 15 174 516090 2440.93 835 816 211.1
B 10 28 252613 1426.2 827 799 176.6
B 5 172 170596 961.68 827 799 176.6
B 2 249 119416 671.81 827 799 176.6
C 15 224 2691722 13340.01 724 719 201.7
C 1 241 2051792 10167.71 724 719 201.7
C 7 64 498761 2468.93 724 719 201.7
D 2 249 1666719 7155.65 802 767 232.8
D 2 153 635356 2725.71 802 767 232.8
D 10 1 448659 1923.8 802 767 232.8

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