ASTROSAT CZTI

Data Quality Report

Orbit 58303

Creation date: 2026-07-08T03:49:55.290763
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_044T03_9000006588_58303cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58303cztM0_level2_quad_clean.evt
Size (bytes)1,822,199,040231,952,320
Size1.7 GB 221.2 MB
Events in quadrant A18,554,4551,345,907
Events in quadrant B25,315,7421,270,003
Events in quadrant C11,148,7221,583,963
Events in quadrant D10,997,3211,540,671

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0687003
B0880373
C0469193
D0452223

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18583366819.738471%
B18584596832.113646%
C185848394.514636%
D185842091.124623%

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 19998 18583 3245 3245 16.23% 17.46%
B 19999 18584 5211 5211 26.06% 28.04%
C 19999 18585 765 765 3.83% 4.12%
D 19999 18586 173 173 0.87% 0.93%

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 12 114 10396938 22457.77 1849 1800 462.9
A 13 248 474460 1021.14 1849 1800 462.9
A 7 237 77110 162.7 1849 1800 462.9
B 10 128 13747905 38031.84 1710 1647 361.4
B 3 238 2743116 7584.84 1710 1647 361.4
B 4 206 373124 1027.77 1710 1647 361.4
C 15 198 1096584 2091.41 1900 1883 523.4
C 4 5 1001625 1909.99 1900 1883 523.4
C 9 38 699218 1332.25 1900 1883 523.4
D 11 129 1389066 2534.47 1921 1836 547.3
D 2 249 466548 849.03 1921 1836 547.3
D 12 248 346128 629.02 1921 1836 547.3

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