ASTROSAT CZTI

Data Quality Report

Orbit 37308

Creation date: 2024-06-27T21:38:16.378723
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/AS1A11_030T02_9000005310_37308cztM0_level2.evt modeM0/AS1A11_030T02_9000005310_37308cztM0_level2_quad_clean.evt
Size (bytes)458,671,68057,574,080
Size437.4 MB 54.9 MB
Events in quadrant A3,046,507341,944
Events in quadrant B3,907,025342,110
Events in quadrant C2,930,969336,092
Events in quadrant D3,613,078317,860

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125933
B0153692
C0121892
D0147132

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5791430.742532%
B57914077.028147%
C5791500.863409%
D57911803.108271%

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 7165 5792 22 22 0.31% 0.38%
B 7165 5792 285 285 3.98% 4.92%
C 7165 5792 45 45 0.63% 0.78%
D 7165 5792 134 134 1.87% 2.31%

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 298002 2238.15 659 646 132.9
A 13 248 81351 607.45 659 646 132.9
A 9 143 50982 378.87 659 646 132.9
B 5 172 1010826 8367.91 630 614 120.7
B 0 213 224907 1857.89 630 614 120.7
B 5 255 33964 276.25 630 614 120.7
C 15 214 242134 1611.2 641 646 149.9
C 0 10 165447 1099.55 641 646 149.9
C 14 254 17098 109.77 641 646 149.9
D 2 249 325891 2071.7 636 620 157.0
D 13 249 262824 1670.02 636 620 157.0
D 12 233 224405 1425.32 636 620 157.0

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