ASTROSAT CZTI

Data Quality Report

Orbit 26272

Creation date: 2024-06-27T19:26:51.916446
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/AS1A09_079T03_9000003790_26272cztM0_level2.evt modeM0/AS1A09_079T03_9000003790_26272cztM0_level2_quad_clean.evt
Size (bytes)457,750,080111,533,760
Size436.5 MB 106.4 MB
Events in quadrant A3,506,111725,897
Events in quadrant B3,234,679770,995
Events in quadrant C3,693,659734,717
Events in quadrant D3,008,368714,610

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143290
B0134920
C0149060
D0130630

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61851161.875505%
B6184400.646831%
C61842764.463131%
D6184150.242561%

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 7565 6187 88 88 1.16% 1.42%
B 7564 6186 0 0 0.00% 0.00%
C 7564 6186 77 77 1.02% 1.24%
D 7564 6186 3 3 0.04% 0.05%

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 424870 2676.99 798 783 158.4
A 13 254 11102 65.14 798 783 158.4
A 3 137 6915 38.71 798 783 158.4
B 12 111 17360 109.46 816 799 151.3
B 7 219 16962 106.83 816 799 151.3
B 11 111 15402 96.52 816 799 151.3
C 4 254 505781 2835.06 776 783 178.1
C 14 238 125889 702.34 776 783 178.1
C 3 233 25430 138.37 776 783 178.1
D 2 234 25461 133.56 780 763 184.9
D 11 176 17671 91.43 780 763 184.9
D 10 103 11669 58.98 780 763 184.9

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