ASTROSAT CZTI

Data Quality Report

Orbit 47885

Creation date: 2024-08-05T18:14:02.140172
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/AS1A13_053T01_9000006370_47885cztM0_level2.fits modeM0/AS1A13_053T01_9000006370_47885cztM0_level2_quad_clean.evt
Size (bytes)571,639,680119,816,640
Size545.2 MB 114.3 MB
Events in quadrant A7,410,339790,298
Events in quadrant B3,755,961822,868
Events in quadrant C3,335,832806,441
Events in quadrant D6,061,560673,048

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0276070
B0166610
C0158980
D0235910

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76942042.651417%
B7694740.961788%
C7694110.142969%
D769478010.137770%

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 7694 7694 3 3 0.04% 0.04%
B 7694 7694 18 18 0.23% 0.23%
C 7694 7694 6 6 0.08% 0.08%
D 7694 7694 760 760 9.88% 9.88%

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 10 83 4079460 23205.6 840 818 175.8
A 7 3 67283 378.16 840 818 175.8
A 13 248 13640 72.95 840 818 175.8
B 4 171 239666 1442.01 839 809 165.6
B 0 183 96597 578.28 839 809 165.6
B 0 230 23948 139.69 839 809 165.6
C 14 254 53526 268.66 838 839 196.1
C 12 2 10257 48.02 838 839 196.1
C 13 61 5455 23.54 838 839 196.1
D 2 37 1856086 9096.63 814 785 204.0
D 12 233 550318 2694.39 814 785 204.0
D 2 165 173192 845.32 814 785 204.0

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