ASTROSAT CZTI

Data Quality Report

Orbit 07100

Creation date: 2024-06-27T15:15:34.439572
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/AS1A02_090T01_9000000970_07100cztM0_level2.evt modeM0/AS1A02_090T01_9000000970_07100cztM0_level2_quad_clean.evt
Size (bytes)1,115,861,760204,344,640
Size1.0 GB 194.9 MB
Events in quadrant A7,415,9461,285,886
Events in quadrant B7,904,0921,291,959
Events in quadrant C7,436,1911,275,730
Events in quadrant D9,934,9781,210,833

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0333463
B0342022
C0333912
D0404972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03320
B03320
C03320
D03320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A162961620.994109%
B162961560.957290%
C16296970.595238%
D162962601.595484%

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 17241 16297 0 0 0.00% 0.00%
B 17241 16296 1 1 0.01% 0.01%
C 17241 16297 9 9 0.05% 0.06%
D 17241 16297 120 120 0.70% 0.74%

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 0 226 18243 41.65 1921 1881 392.8
A 12 194 16634 37.56 1921 1881 392.8
A 13 14 13576 29.77 1921 1881 392.8
B 0 219 172519 460.44 1937 1891 370.6
B 0 214 110754 293.77 1937 1891 370.6
B 4 81 72976 191.82 1937 1891 370.6
C 4 254 50889 113.05 1871 1886 433.4
C 9 68 34794 75.92 1871 1886 433.4
C 1 3 21615 45.52 1871 1886 433.4
D 1 20 1253284 2751.56 1860 1808 454.8
D 8 195 1073874 2357.1 1860 1808 454.8
D 2 14 317345 693.76 1860 1808 454.8

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