ASTROSAT CZTI

Data Quality Report

Orbit 20160219_T01_072T02_9000000336_level2

Creation date: 2025-10-27T20:18:54.141166
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/AS1T01_072T02_9000000336cztM0_level2.fits modeM0/AS1T01_072T02_9000000336cztM0_level2_quad_clean.evt
Size (bytes)809,484,480928,212,480
Size772.0 MB 885.2 MB
Events in quadrant A4,627,0485,600,546
Events in quadrant B4,646,3965,668,256
Events in quadrant C4,627,0685,322,932
Events in quadrant D4,010,3844,917,936

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02044870
B02077740
C01967820
D02027690

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019300
B019300
C019300
D019300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1140287632291880140286516789294
B1140287632291880140286516789294
C1140287632291880140286516789294
D1140287632291880140286516789294

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9633416761.739780%
B963325480.568866%
C963323110.322842%
D963329610.997592%

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 110106 96055 0 0 0.00% 0.00%
B 110106 96329 0 0 0.00% 0.00%
C 110106 96327 0 0 0.00% 0.00%
D 110106 96313 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 7 110 4149 10.86 1200 1118 279.1
A 0 29 3309 7.85 1200 1118 279.1
A 0 30 3247 7.63 1200 1118 279.1
B 2 9 3701 11.2 1229 1162 226.6
B 5 128 3035 8.26 1229 1162 226.6
B 10 225 2945 7.87 1229 1162 226.6
C 12 241 3143 6.86 1220 1125 294.1
C 2 127 3015 6.43 1220 1125 294.1
C 1 81 2989 6.34 1220 1125 294.1
D 1 19 2939 6.98 1144 1045 271.4
D 11 82 2892 6.81 1144 1045 271.4
D 6 231 2850 6.65 1144 1045 271.4

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