ASTROSAT CZTI

Data Quality Report

Orbit 22946

Creation date: 2024-06-27T18:47:52.132275
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/AS1A08_009T01_9000003390_22946cztM0_level2.evt modeM0/AS1A08_009T01_9000003390_22946cztM0_level2_quad_clean.evt
Size (bytes)447,217,920100,903,680
Size426.5 MB 96.2 MB
Events in quadrant A3,211,877654,664
Events in quadrant B3,194,044667,982
Events in quadrant C3,138,970636,720
Events in quadrant D3,532,257618,094

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140782
B0140211
C0139621
D0152121

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6862841.224133%
B6863791.151100%
C6863951.384234%
D68631482.156491%

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 7237 6863 4 4 0.06% 0.06%
B 7238 6864 1 1 0.01% 0.01%
C 7238 6864 5 5 0.07% 0.07%
D 7238 6864 78 78 1.08% 1.14%

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 13 170 93160 561.8 809 791 164.4
A 13 254 10669 60.08 809 791 164.4
A 0 226 7062 38.14 809 791 164.4
B 0 190 18768 117.51 802 781 153.1
B 12 111 18569 116.21 802 781 153.1
B 0 189 17252 107.61 802 781 153.1
C 14 238 122220 681.08 767 771 178.3
C 7 247 18825 101.25 767 771 178.3
C 13 61 5280 25.29 767 771 178.3
D 12 238 179102 954.04 776 752 186.9
D 13 153 158302 842.77 776 752 186.9
D 7 223 49654 261.59 776 752 186.9

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