ASTROSAT CZTI

Data Quality Report

Orbit 54273

Creation date: 2025-10-09T23:14:48.672371
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_126T15_9000006516_54273cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54273cztM0_level2_quad_clean.evt
Size (bytes)532,609,920107,331,840
Size507.9 MB 102.4 MB
Events in quadrant A3,658,711718,928
Events in quadrant B5,062,249748,406
Events in quadrant C4,384,110658,128
Events in quadrant D6,020,714596,010

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165000
B0203991
C0187470
D0231800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7593801.053602%
B75933114.095878%
C75933023.977348%
D75936168.112735%

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 7593 7593 47 47 0.62% 0.62%
B 7593 7593 258 258 3.40% 3.40%
C 7593 7593 257 257 3.38% 3.38%
D 7593 7593 520 520 6.85% 6.85%

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 15 174 107195 548.4 791 772 194.1
A 3 130 103182 527.72 791 772 194.1
A 4 5 79297 404.64 791 772 194.1
B 5 185 833992 5052.9 775 748 164.9
B 5 172 462282 2798.8 775 748 164.9
B 5 236 217316 1313.3 775 748 164.9
C 1 29 685823 3331.73 758 748 205.6
C 13 16 183443 888.5 758 748 205.6
C 14 254 168698 816.79 758 748 205.6
D 8 176 1359914 6529.58 743 708 208.2
D 3 12 1071012 5141.71 743 708 208.2
D 10 181 271961 1303.09 743 708 208.2

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