ASTROSAT CZTI

Data Quality Report

Orbit 46320

Creation date: 2024-06-27T23:21:40.814599
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/AS1T05_200T01_9000006196_46320cztM0_level2.fits modeM0/AS1T05_200T01_9000006196_46320cztM0_level2_quad_clean.evt
Size (bytes)765,541,440114,531,840
Size730.1 MB 109.2 MB
Events in quadrant A15,254,591419,276
Events in quadrant B4,989,854883,574
Events in quadrant C3,659,474836,116
Events in quadrant D3,808,620768,720

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0509192
B0202360
C0169500
D0173360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8059444955.205360%
B80601291.600496%
C8060320.397022%
D8060550.682382%

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 8058 8058 3664 3664 45.47% 45.47%
B 8060 8060 57 57 0.71% 0.71%
C 8060 8060 23 23 0.29% 0.29%
D 8060 8060 36 36 0.45% 0.45%

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 15 223 10056261 72024.34 660 647 139.6
A 10 83 2580051 18475.24 660 647 139.6
A 15 239 58340 413.23 660 647 139.6
B 3 112 889417 4989.24 892 862 178.1
B 0 190 277797 1554.99 892 862 178.1
B 5 172 144715 807.73 892 862 178.1
C 12 2 127886 621.8 867 870 204.3
C 1 3 74755 361.7 867 870 204.3
C 12 250 59619 287.6 867 870 204.3
D 13 249 135442 613.22 869 841 219.5
D 1 52 119108 538.81 869 841 219.5
D 2 234 46857 209.64 869 841 219.5

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