ASTROSAT CZTI

Data Quality Report

Orbit 20221128_A12_051T01_9000005394_level2

Creation date: 2022-12-01T13:10:50.463579
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/AS1A12_051T01_9000005394cztM0_level2.fits modeM0/AS1A12_051T01_9000005394cztM0_level2_quad_clean.evt
Size (bytes)1,183,144,3201,175,503,680
Size1.1 GB 1.1 GB
Events in quadrant A7,096,8707,065,063
Events in quadrant B6,842,2286,944,098
Events in quadrant C6,987,3186,619,657
Events in quadrant D5,976,4606,045,860

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026600
B026600
C026600
D026600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02777930
B02923160
C02841270
D03431930

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04890
B04880
C04880
D04890

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1302734920.377668%
B13027331612.426443%
C13027317951.377876%
D13027345633.502644%

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 178015 130272 0 0 0.00% 0.00%
B 178015 130252 0 0 0.00% 0.00%
C 178015 130230 0 0 0.00% 0.00%
D 178015 130160 0 0 0.00% 0.00%

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 7 110 5887 8.87 1854 1730 468.9
A 9 19 5844 8.77 1854 1730 468.9
A 0 29 5672 8.41 1854 1730 468.9
B 2 9 5897 11.9 1804 1718 351.2
B 3 80 5409 10.51 1804 1718 351.2
B 3 17 4724 8.56 1804 1718 351.2
C 1 81 5720 8.53 1846 1734 467.4
C 1 80 5563 8.19 1846 1734 467.4
C 3 202 5541 8.14 1846 1734 467.4
D 7 3 4476 6.46 1706 1558 451.6
D 10 189 4426 6.35 1706 1558 451.6
D 10 113 4321 6.12 1706 1558 451.6

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