ASTROSAT CZTI

Data Quality Report

Orbit 08708

Creation date: 2024-06-27T15:36:24.486601
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/AS1G07_027T01_9000001210_08708cztM0_level2.evt modeM0/AS1G07_027T01_9000001210_08708cztM0_level2_quad_clean.evt
Size (bytes)570,479,040108,797,760
Size544.1 MB 103.8 MB
Events in quadrant A4,164,837677,812
Events in quadrant B4,131,439683,332
Events in quadrant C4,029,064682,890
Events in quadrant D4,368,133654,033

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178993
B0176862
C0176502
D0185606

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A86011491.732357%
B86011341.557958%
C86011081.255668%
D85991341.558321%

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 10341 8601 16 16 0.15% 0.19%
B 10341 8601 3 3 0.03% 0.03%
C 10341 8601 4 4 0.04% 0.05%
D 10341 8601 23 23 0.22% 0.27%

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 15 174 66998 305.82 1049 1026 215.7
A 13 251 54848 249.5 1049 1026 215.7
A 5 16 10316 43.07 1049 1026 215.7
B 12 111 21360 100.57 1053 1028 202.2
B 11 111 17294 80.46 1053 1028 202.2
B 4 173 13062 59.53 1053 1028 202.2
C 14 234 28647 115.62 1023 1028 238.9
C 13 61 7744 28.12 1023 1028 238.9
C 14 67 6190 21.61 1023 1028 238.9
D 2 152 174170 703.24 1013 990 246.3
D 8 195 158906 641.25 1013 990 246.3
D 7 71 50757 202.09 1013 990 246.3

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