ASTROSAT CZTI

Data Quality Report

Orbit 56817

Creation date: 2026-03-30T04:03:22.580130
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_083T03_9000006562_56817cztM0_level2.fits modeM0/AS1A14_083T03_9000006562_56817cztM0_level2_quad_clean.evt
Size (bytes)694,961,280109,788,480
Size662.8 MB 104.7 MB
Events in quadrant A6,038,352750,217
Events in quadrant B8,476,370711,023
Events in quadrant C6,663,249626,391
Events in quadrant D3,922,337675,399

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237260
B0308190
C0257720
D0178561

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80681321.636093%
B8068131416.286564%
C8069109513.570455%
D8068851.053545%

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 8068 8068 78 78 0.97% 0.97%
B 8068 8068 859 859 10.65% 10.65%
C 8069 8069 1065 1065 13.20% 13.20%
D 8068 8068 74 74 0.92% 0.92%

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 2156896 10099.35 858 836 213.5
A 10 251 430191 2011.17 858 836 213.5
A 4 249 85578 396.94 858 836 213.5
B 2 249 1872907 10679.07 811 782 175.3
B 5 185 1850540 10551.48 811 782 175.3
B 4 206 981894 5596.51 811 782 175.3
C 15 230 2620697 12226.94 785 778 214.3
C 2 12 444172 2069.28 785 778 214.3
C 13 3 132970 616.93 785 778 214.3
D 2 249 369429 1584.62 825 788 232.6
D 5 173 79320 337.57 825 788 232.6
D 2 31 74943 318.76 825 788 232.6

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