ASTROSAT CZTI

Data Quality Report

Orbit 51993

Creation date: 2025-05-09T11:37:20.493195
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/AS1C09_011T06_9000006468_51993cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_51993cztM0_level2_quad_clean.evt
Size (bytes)836,147,520102,381,120
Size797.4 MB 97.6 MB
Events in quadrant A8,152,463647,166
Events in quadrant B4,588,326755,090
Events in quadrant C7,860,367603,340
Events in quadrant D9,753,622556,398

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0296310
B0193070
C0288110
D0344090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A772988111.398629%
B77292323.001682%
C7729119715.487126%
D7729131316.987967%

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 7729 7729 757 757 9.79% 9.79%
B 7729 7729 131 131 1.69% 1.69%
C 7729 7729 1075 1075 13.91% 13.91%
D 7729 7729 1434 1434 18.55% 18.55%

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 7 64 1652837 8954.42 749 732 184.5
A 4 95 1522252 8246.65 749 732 184.5
A 3 14 371998 2012.26 749 732 184.5
B 4 206 424010 2577.77 782 755 164.2
B 10 247 112436 680.18 782 755 164.2
B 1 223 99057 598.69 782 755 164.2
C 15 224 3972808 19843.43 722 717 200.2
C 15 192 276794 1379.2 722 717 200.2
C 12 252 146235 726.97 722 717 200.2
D 6 42 3556408 17185.1 718 685 206.9
D 12 16 751850 3630.44 718 685 206.9
D 12 6 639062 3085.33 718 685 206.9

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