ASTROSAT CZTI

Data Quality Report

Orbit 20160630_G05_192T01_9000000522_level2

Creation date: 2025-10-31T04:37:28.380695
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/AS1G05_192T01_9000000522cztM0_level2.fits modeM0/AS1G05_192T01_9000000522cztM0_level2_quad_clean.evt
Size (bytes)208,552,320191,099,520
Size198.9 MB 182.2 MB
Events in quadrant A1,302,5581,199,143
Events in quadrant B1,246,2561,170,113
Events in quadrant C1,066,836774,319
Events in quadrant D1,129,1001,075,930

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04640
B04640
C04640
D04640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0495690
B0655460
C0979220
D0495120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0610
B0610
C0610
D0610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A227732711.190006%
B2277311635.106925%
C22773837736.784789%
D227732701.185615%

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 28847 22770 0 0 0.00% 0.00%
B 28848 22769 0 0 0.00% 0.00%
C 28848 22769 0 0 0.00% 0.00%
D 28848 22768 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 1301 11.06 339 317 89.0
A 7 110 1080 8.58 339 317 89.0
A 0 30 1063 8.39 339 317 89.0
B 2 9 1040 10.83 329 314 67.0
B 12 226 928 9.16 329 314 67.0
B 5 128 905 8.82 329 314 67.0
C 7 111 765 6.66 281 262 75.5
C 1 80 756 6.54 281 262 75.5
C 12 241 741 6.35 281 262 75.5
D 11 82 907 7.04 321 293 87.2
D 3 14 883 6.77 321 293 87.2
D 7 3 840 6.28 321 293 87.2

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