ASTROSAT CZTI

Data Quality Report

Orbit 11515

Creation date: 2024-06-27T16:14:04.382123
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/AS1A04_021T06_9000001688_11515cztM0_level2.evt modeM0/AS1A04_021T06_9000001688_11515cztM0_level2_quad_clean.evt
Size (bytes)1,722,542,400229,196,160
Size1.6 GB 218.6 MB
Events in quadrant A19,902,0521,234,715
Events in quadrant B12,191,4301,407,825
Events in quadrant C8,720,9691,537,941
Events in quadrant D10,060,6621,439,433

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0722395
B0493344
C0393264
D0436624

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03920
B03920
C03920
D03920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19156416921.763416%
B191569825.126331%
C19156590.307997%
D191562911.519106%

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 21262 19156 2441 2441 11.48% 12.74%
B 21262 19161 494 494 2.32% 2.58%
C 21262 19161 2 2 0.01% 0.01%
D 21262 19161 175 175 0.82% 0.91%

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 8 5 11464875 29082.07 1961 1922 394.2
A 15 223 208777 524.8 1961 1922 394.2
A 1 162 117897 294.23 1961 1922 394.2
B 4 239 2050759 4919.27 2193 2137 416.4
B 3 64 1028933 2465.6 2193 2137 416.4
B 15 204 270975 645.55 2193 2137 416.4
C 7 87 57772 108.18 2210 2225 513.4
C 0 207 46899 87.01 2210 2225 513.4
C 13 61 15852 26.54 2210 2225 513.4
D 2 120 371769 708.85 2177 2114 521.5
D 13 104 354141 675.05 2177 2114 521.5
D 10 253 323994 617.24 2177 2114 521.5

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