ASTROSAT CZTI

Data Quality Report

Orbit 48044

Creation date: 2024-08-16T11:34:32.802823
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_037T05_9000006392_48044cztM0_level2.fits modeM0/AS1A13_037T05_9000006392_48044cztM0_level2_quad_clean.evt
Size (bytes)543,277,440120,732,480
Size518.1 MB 115.1 MB
Events in quadrant A7,904,591783,500
Events in quadrant B3,599,129835,387
Events in quadrant C3,542,259793,976
Events in quadrant D4,472,521711,799

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0287462
B0160872
C0162762
D0188332

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76333574.677060%
B76331391.821040%
C7633941.231495%
D76332313.026333%

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 7998 7634 40 40 0.50% 0.52%
B 7998 7634 3 3 0.04% 0.04%
C 7998 7634 16 16 0.20% 0.21%
D 7998 7634 140 140 1.75% 1.83%

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 4554005 25295.61 852 832 180.0
A 0 243 22940 122.82 852 832 180.0
A 7 3 17376 91.91 852 832 180.0
B 5 255 48689 273.46 868 839 175.0
B 7 221 44963 252.17 868 839 175.0
B 10 245 26878 148.81 868 839 175.0
C 12 249 145883 713.25 855 857 203.3
C 5 37 24681 117.17 855 857 203.3
C 14 67 14398 66.6 855 857 203.3
D 2 165 318502 1493.26 840 814 212.7
D 2 249 302689 1418.93 840 814 212.7
D 11 192 127967 597.67 840 814 212.7

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