ASTROSAT CZTI

Data Quality Report

Orbit 10728

Creation date: 2024-06-27T16:02:59.270606
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/AS1A03_078T01_9000001546_10728cztM0_level2.evt modeM0/AS1A03_078T01_9000001546_10728cztM0_level2_quad_clean.evt
Size (bytes)565,603,20092,304,000
Size539.4 MB 88.0 MB
Events in quadrant A3,791,530566,222
Events in quadrant B4,950,651571,822
Events in quadrant C3,669,675575,257
Events in quadrant D4,191,775543,056

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164803
B0200652
C0162972
D0176192

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77511041.341762%
B77514806.192749%
C7751841.083731%
D7751921.186944%

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 9521 7754 4 4 0.04% 0.05%
B 9521 7753 147 147 1.54% 1.90%
C 9521 7754 7 7 0.07% 0.09%
D 9521 7754 41 41 0.43% 0.53%

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 13 251 47944 243.04 945 925 193.5
A 14 254 23728 117.87 945 925 193.5
A 15 239 18536 91.03 945 925 193.5
B 4 239 1098339 6076.47 940 917 180.6
B 0 219 45199 245.19 940 917 180.6
B 0 214 34817 187.7 940 917 180.6
C 14 234 50134 225.77 928 929 217.9
C 13 61 6861 27.22 928 929 217.9
C 3 254 2964 9.34 928 929 217.9
D 8 195 366774 1663.61 912 887 219.9
D 13 249 184760 836.03 912 887 219.9
D 12 233 81504 366.55 912 887 219.9

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