ASTROSAT CZTI

Data Quality Report

Orbit 20220313_A11_065T05_9000004998_level2

Creation date: 2026-01-01T21:39:10.292277
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/AS1A11_065T05_9000004998cztM0_level2.fits modeM0/AS1A11_065T05_9000004998cztM0_level2_quad_clean.evt
Size (bytes)221,702,400240,249,600
Size211.4 MB 229.1 MB
Events in quadrant A1,353,3881,504,576
Events in quadrant B1,287,1021,507,419
Events in quadrant C1,327,5221,419,904
Events in quadrant D1,108,4961,206,420

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04860
B04860
C04860
D04860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0483100
B0562490
C0500200
D0763620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A23796290.121869%
B237965432.281896%
C237961500.630358%
D2379612285.160531%

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 31834 23795 0 0 0.00% 0.00%
B 31834 23775 0 0 0.00% 0.00%
C 31834 23794 0 0 0.00% 0.00%
D 31834 23789 0 0 0.00% 0.00%

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 9 19 1134 9.04 353 330 88.9
A 7 110 1102 8.68 353 330 88.9
A 0 29 1075 8.38 353 330 88.9
B 2 9 1136 11.74 340 324 69.1
B 3 80 979 9.47 340 324 69.1
B 2 8 971 9.36 340 324 69.1
C 1 80 1073 8.1 350 328 92.0
C 1 81 1056 7.91 350 328 92.0
C 3 202 1027 7.6 350 328 92.0
D 10 113 856 6.55 317 288 86.7
D 4 160 827 6.22 317 288 86.7
D 10 189 817 6.1 317 288 86.7

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