ASTROSAT CZTI

Data Quality Report

Orbit 56443

Creation date: 2026-03-05T01:03:12.498316
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_083T05_9000006554_56443cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56443cztM0_level2_quad_clean.evt
Size (bytes)1,676,229,120242,841,600
Size1.6 GB 231.6 MB
Events in quadrant A20,613,7291,399,371
Events in quadrant B13,489,7041,761,961
Events in quadrant C13,776,3981,451,067
Events in quadrant D12,766,0881,485,645

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740173
B0526036
C0538873
D0506893

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18189325717.906427%
B181888034.414999%
C1818817759.759182%
D181885783.177920%

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 19710 18189 2612 2612 13.25% 14.36%
B 19708 18187 508 508 2.58% 2.79%
C 19709 18190 1601 1601 8.12% 8.80%
D 19709 18189 530 530 2.69% 2.91%

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 3502195 7691.99 1828 1781 455.1
A 4 159 3454615 7587.44 1828 1781 455.1
A 12 3 2467342 5417.95 1828 1781 455.1
B 4 21 2648272 6567.48 1901 1834 403.0
B 4 206 1398914 3467.04 1901 1834 403.0
B 5 172 604827 1496.41 1901 1834 403.0
C 12 254 3795078 7748.73 1781 1766 489.5
C 1 16 1217796 2484.03 1781 1766 489.5
C 15 209 677023 1379.37 1781 1766 489.5
D 12 3 1413004 2679.92 1846 1762 526.6
D 2 249 766621 1452.45 1846 1762 526.6
D 5 113 678917 1285.9 1846 1762 526.6

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