ASTROSAT CZTI

Data Quality Report

Orbit 11020

Creation date: 2024-06-27T16:07:09.461346
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/AS1G08_046T09_9000001600_11020cztM0_level2.evt modeM0/AS1G08_046T09_9000001600_11020cztM0_level2_quad_clean.evt
Size (bytes)652,348,800102,104,640
Size622.1 MB 97.4 MB
Events in quadrant A4,732,465644,351
Events in quadrant B5,187,515650,607
Events in quadrant C3,275,908660,084
Events in quadrant D6,058,172620,329

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01915090
B020492110
C01512849
D02325483

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74163264.395901%
B74214686.306428%
C7429230.309598%
D74243494.700970%

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 7678 7448 244 244 3.18% 3.28%
B 7678 7451 267 267 3.48% 3.58%
C 7678 7452 0 0 0.00% 0.00%
D 7678 7454 293 293 3.82% 3.93%

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 14 238 757237 4390.02 843 822 172.3
A 8 5 706026 4092.81 843 822 172.3
A 15 174 16489 90.93 843 822 172.3
B 4 239 1792235 11180.04 841 821 160.2
B 0 214 39452 241.09 841 821 160.2
B 15 204 31271 190.04 841 821 160.2
C 13 61 6131 27.22 837 841 194.4
C 8 128 3879 15.63 837 841 194.4
C 14 234 2500 8.54 837 841 194.4
D 1 52 1297769 6516.28 823 799 199.0
D 10 253 493169 2473.78 823 799 199.0
D 8 195 373659 1873.34 823 799 199.0

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