ASTROSAT CZTI

Data Quality Report

Orbit 57162

Creation date: 2026-04-22T08:25:00.944817
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_070T08_9000006568_57162cztM0_level2.fits modeM0/AS1A14_070T08_9000006568_57162cztM0_level2_quad_clean.evt
Size (bytes)514,609,92097,441,920
Size490.8 MB 92.9 MB
Events in quadrant A2,976,106666,845
Events in quadrant B3,584,897709,403
Events in quadrant C5,422,162585,538
Events in quadrant D6,536,571513,697

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141722
B0154882
C0209062
D0242622

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6816230.337441%
B68161802.640845%
C68166118.964202%
D681693013.644366%

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 7916 6817 1 1 0.01% 0.01%
B 7916 6817 85 85 1.07% 1.25%
C 7916 6816 451 451 5.70% 6.62%
D 7916 6816 821 821 10.37% 12.05%

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 104628 582.2 723 704 178.5
A 10 248 20782 112.48 723 704 178.5
A 4 3 20266 109.59 723 704 178.5
B 4 67 249912 1630.95 717 692 152.8
B 10 247 175535 1144.21 717 692 152.8
B 1 238 52875 341.5 717 692 152.8
C 15 224 2347065 12768.4 677 669 183.8
C 13 3 139374 754.79 677 669 183.8
C 14 246 92929 502.05 677 669 183.8
D 12 33 2875401 15582.65 654 624 184.5
D 7 96 605317 3277.72 654 624 184.5
D 8 240 154926 836.39 654 624 184.5

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