ASTROSAT CZTI

Data Quality Report

Orbit 40013

Creation date: 2024-06-27T22:11:16.878566
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/AS1A12_054T03_9000005516_40013cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_40013cztM0_level2_quad_clean.evt
Size (bytes)549,423,360163,065,600
Size524.0 MB 155.5 MB
Events in quadrant A4,971,0951,100,531
Events in quadrant B5,037,6811,131,415
Events in quadrant C4,730,4161,079,649
Events in quadrant D4,877,683981,899

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01920
B01920
C01920
D01920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202913
B0213222
C0197632
D0212082

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9284220.236967%
B92841731.863421%
C9284340.366221%
D9284981.055579%

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 13530 9286 12 12 0.09% 0.13%
B 13530 9286 87 87 0.64% 0.94%
C 13530 9286 32 32 0.24% 0.34%
D 13530 9286 80 80 0.59% 0.86%

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 723675 3417.16 1048 1031 211.5
A 2 79 74619 347.97 1048 1031 211.5
A 7 3 41698 192.3 1048 1031 211.5
B 4 171 828554 4171.66 1039 1014 198.4
B 4 81 59667 295.67 1039 1014 198.4
B 0 230 36576 179.27 1039 1014 198.4
C 15 214 385846 1637.09 1020 1027 235.1
C 14 254 333206 1413.15 1020 1027 235.1
C 0 10 15103 59.88 1020 1027 235.1
D 12 227 505219 2076.99 1011 987 242.8
D 13 249 164001 671.48 1011 987 242.8
D 2 250 129127 527.82 1011 987 242.8

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