ASTROSAT CZTI

Data Quality Report

Orbit 31768

Creation date: 2024-06-27T20:32:28.916570
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/AS1A10_059T02_9000004636_31768cztM0_level2.evt modeM0/AS1A10_059T02_9000004636_31768cztM0_level2_quad_clean.evt
Size (bytes)2,568,792,960331,064,640
Size2.4 GB 315.7 MB
Events in quadrant A22,014,8661,989,232
Events in quadrant B19,570,2362,175,869
Events in quadrant C18,142,3572,096,416
Events in quadrant D16,386,6252,041,993

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05080
B05080
C05080
D05080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0819444
B0776244
C0705224
D0646154

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A25032489619.558965%
B250336382.548636%
C2503317416.954820%
D250338963.579275%

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 27327 25035 2876 2876 10.52% 11.49%
B 27328 25037 119 119 0.44% 0.48%
C 27328 25037 780 780 2.85% 3.12%
D 27328 25036 570 570 2.09% 2.28%

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 0 13 11494452 21140.96 2720 2663 543.6
A 13 254 42746 73.74 2720 2663 543.6
A 3 137 27927 46.48 2720 2663 543.6
B 6 159 6790607 12075.21 2961 2884 562.1
B 10 245 551670 976.28 2961 2884 562.1
B 5 172 185179 324.3 2961 2884 562.1
C 0 10 3618679 5465.31 2829 2847 661.6
C 3 233 2788450 4210.42 2829 2847 661.6
C 14 238 451152 677.61 2829 2847 661.6
D 8 195 2590245 3788.19 2873 2799 683.0
D 13 249 1453009 2123.2 2873 2799 683.0
D 12 218 500687 728.94 2873 2799 683.0

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