ASTROSAT CZTI

Data Quality Report

Orbit 45019

Creation date: 2024-06-27T23:09:03.942369
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_020T01_9000006040_45019cztM0_level2.fits modeM0/AS1A13_020T01_9000006040_45019cztM0_level2_quad_clean.evt
Size (bytes)801,132,480136,304,640
Size764.0 MB 130.0 MB
Events in quadrant A6,993,478960,316
Events in quadrant B6,249,236932,022
Events in quadrant C4,026,722951,634
Events in quadrant D11,689,360658,203

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0277800
B0249260
C0187000
D0410083

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A89981071.189153%
B89986397.101578%
C8999230.255584%
D8998236226.250278%

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 8998 8997 2 2 0.02% 0.02%
B 8998 8998 349 349 3.88% 3.88%
C 8999 8999 11 11 0.12% 0.12%
D 8998 8998 2067 2067 22.97% 22.97%

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 3069112 14656.56 1001 980 209.3
A 0 243 26847 123.57 1001 980 209.3
A 10 248 12882 56.86 1001 980 209.3
B 0 189 833773 4317.03 982 953 192.9
B 4 171 789807 4089.12 982 953 192.9
B 12 3 240246 1240.41 982 953 192.9
C 3 233 59763 250.88 990 996 234.2
C 12 2 45989 192.08 990 996 234.2
C 15 208 41830 174.32 990 996 234.2
D 13 249 1641428 7630.49 852 827 215.0
D 1 52 1231986 5726.17 852 827 215.0
D 13 187 1216641 5654.8 852 827 215.0

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