ASTROSAT CZTI

Data Quality Report

Orbit 20170901_G07_068T02_9000001508_level2

Creation date: 2025-11-16T22:50:47.652526
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/AS1G07_068T02_9000001508cztM0_level2.fits modeM0/AS1G07_068T02_9000001508cztM0_level2_quad_clean.evt
Size (bytes)241,332,480166,723,200
Size230.2 MB 159.0 MB
Events in quadrant A1,412,296823,720
Events in quadrant B1,380,786862,449
Events in quadrant C1,492,702859,505
Events in quadrant D1,313,640794,450

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05320
B05300
C05310
D05270

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0610
B0610
C0610
D0610

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0659060
B0603260
C0514700
D0704050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A240515582.320070%
B242048473.499422%
C249591810.725189%
D2580610534.080446%

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 32526 25552 0 0 0.00% 0.00%
B 32526 25586 0 0 0.00% 0.00%
C 32526 26176 0 0 0.00% 0.00%
D 32526 26289 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 0 29 1368 11.02 367 345 92.8
A 7 110 1145 8.62 367 345 92.8
A 0 30 1070 7.81 367 345 92.8
B 2 9 1129 10.51 364 347 74.4
B 3 17 932 7.86 364 347 74.4
B 12 226 913 7.61 364 347 74.4
C 1 80 1119 7.29 393 367 103.2
C 1 81 1102 7.12 393 367 103.2
C 12 241 995 6.09 393 367 103.2
D 6 231 978 6.3 375 342 100.9
D 7 5 936 5.89 375 342 100.9
D 3 14 929 5.82 375 342 100.9

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