ASTROSAT CZTI

Data Quality Report

Orbit 57373

Creation date: 2026-05-06T14:34:09.561742
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_102T01_9000006572_57373cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57373cztM0_level2_quad_clean.evt
Size (bytes)1,199,018,880214,087,680
Size1.1 GB 204.2 MB
Events in quadrant A8,744,5021,391,409
Events in quadrant B8,949,1551,395,829
Events in quadrant C15,520,5611,228,421
Events in quadrant D9,727,2001,181,676

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0395083
B0402523
C0589833
D0422013

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186183271.756365%
B186195182.782104%
C18619199110.693378%
D186195132.755250%

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 20085 18900 22 22 0.11% 0.12%
B 20086 18901 101 101 0.50% 0.53%
C 20086 18901 1417 1417 7.05% 7.50%
D 20086 18902 236 236 1.17% 1.25%

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 10 251 304231 608.58 2021 1968 496.7
A 3 14 197932 394.56 2021 1968 496.7
A 3 61 139661 277.23 2021 1968 496.7
B 5 185 522182 1221.77 1991 1906 425.8
B 10 247 154469 358.26 1991 1906 425.8
B 7 252 151140 350.45 1991 1906 425.8
C 15 224 5542504 10984.97 1884 1866 504.4
C 12 2 962572 1904.71 1884 1866 504.4
C 12 252 667130 1318.96 1884 1866 504.4
D 15 142 320324 582.68 1951 1861 546.5
D 8 240 307590 559.38 1951 1861 546.5
D 7 96 266565 484.32 1951 1861 546.5

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