ASTROSAT CZTI

Data Quality Report

Orbit 45909

Creation date: 2024-06-27T23:17:34.562439
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_071T03_9000006142_45909cztM0_level2.fits modeM0/AS1A13_071T03_9000006142_45909cztM0_level2_quad_clean.evt
Size (bytes)661,458,240113,463,360
Size630.8 MB 108.2 MB
Events in quadrant A6,134,334757,986
Events in quadrant B5,726,150775,364
Events in quadrant C6,960,483760,389
Events in quadrant D5,135,682664,738

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231632
B0216462
C0254952
D0199582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68432443.565688%
B68434556.649130%
C68432904.237907%
D68435397.876662%

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 8008 6844 82 82 1.02% 1.20%
B 8008 6844 215 215 2.68% 3.14%
C 8008 6844 227 227 2.83% 3.32%
D 8008 6844 445 445 5.56% 6.50%

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 3098431 19708.6 758 742 157.2
A 0 247 70605 444.49 758 742 157.2
A 13 252 13304 79.92 758 742 157.2
B 3 112 2572765 17399.35 759 735 147.8
B 0 245 47603 317.05 759 735 147.8
B 2 2 24972 163.96 759 735 147.8
C 4 254 3797990 21153.42 761 767 179.5
C 14 254 169894 942.16 761 767 179.5
C 12 2 17345 92.35 761 767 179.5
D 13 249 1257501 6778.22 737 714 185.4
D 1 52 380355 2047.52 737 714 185.4
D 2 249 368327 1982.64 737 714 185.4

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