ASTROSAT CZTI

Data Quality Report

Orbit 54288

Creation date: 2025-10-11T00:13:10.142521
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_126T15_9000006516_54288cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54288cztM0_level2_quad_clean.evt
Size (bytes)680,647,68098,870,400
Size649.1 MB 94.3 MB
Events in quadrant A5,546,166633,727
Events in quadrant B4,198,334755,593
Events in quadrant C7,542,333527,136
Events in quadrant D7,324,498553,279

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01510
B01520
C01511
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02203963
B01767347
C027977111
D027152126

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A752689011.825671%
B7526470.624502%
C7527164821.894513%
D753297612.958046%

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 7558 7536 857 857 11.34% 11.37%
B 7559 7536 33 33 0.44% 0.44%
C 7559 7535 1667 1667 22.05% 22.12%
D 7559 7540 999 999 13.22% 13.25%

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 7 29 2213471 12310.56 729 711 179.7
A 15 174 204979 1136.43 729 711 179.7
A 3 110 71759 395.27 729 711 179.7
B 7 0 472847 2843.0 774 745 166.1
B 10 28 393864 2367.36 774 745 166.1
B 0 213 79325 473.21 774 745 166.1
C 1 241 4589865 24810.64 674 666 185.0
C 1 29 145669 783.93 674 666 185.0
C 15 189 58375 311.99 674 666 185.0
D 3 12 1687799 8277.06 716 684 203.8
D 8 176 1628033 7983.84 716 684 203.8
D 2 153 410379 2009.98 716 684 203.8

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