ASTROSAT CZTI

Data Quality Report

Orbit 58140

Creation date: 2026-07-01T13:54:53.265151
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_042T02_9000006586_58140cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58140cztM0_level2_quad_clean.evt
Size (bytes)953,089,92088,917,120
Size908.9 MB 84.8 MB
Events in quadrant A3,857,547761,218
Events in quadrant B19,756,32444,741
Events in quadrant C3,596,983718,847
Events in quadrant D7,456,249618,126

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171260
B0640945
C0166420
D0275610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7902640.809922%
B7901753695.380332%
C7901320.405012%
D790286410.933941%

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 7902 7902 57 57 0.72% 0.72%
B 7900 7900 7185 7185 90.95% 90.95%
C 7901 7901 26 26 0.33% 0.33%
D 7902 7902 833 833 10.54% 10.54%

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 13 248 179503 835.24 863 843 213.9
A 10 251 178815 832.02 863 843 213.9
A 11 3 74322 343.52 863 843 213.9
B 10 128 18728519 424978.99 199 192 44.1
B 2 249 130502 2956.97 199 192 44.1
B 5 185 57939 1310.38 199 192 44.1
C 12 252 185247 809.07 831 824 227.9
C 12 250 34247 146.63 831 824 227.9
C 9 38 32430 138.66 831 824 227.9
D 12 110 2799949 12384.84 797 763 226.0
D 8 160 478466 2113.57 797 763 226.0
D 8 240 381719 1685.52 797 763 226.0

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