ASTROSAT CZTI

Data Quality Report

Orbit 18747

Creation date: 2024-06-27T17:54:18.303596
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/AS1A05_156T01_9000002804_18747cztM0_level2.evt modeM0/AS1A05_156T01_9000002804_18747cztM0_level2_quad_clean.evt
Size (bytes)491,172,48095,722,560
Size468.4 MB 91.3 MB
Events in quadrant A3,450,175610,641
Events in quadrant B3,417,004620,009
Events in quadrant C4,209,453597,475
Events in quadrant D3,335,035595,347

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146692
B0144842
C0168172
D0145592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68231472.154478%
B68241662.432591%
C68243815.583236%
D68241031.509379%

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 8808 6825 0 0 0.00% 0.00%
B 8809 6826 2 2 0.02% 0.03%
C 8809 6826 52 52 0.59% 0.76%
D 8809 6826 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 15 192 127604 739.18 856 838 171.5
A 15 191 17940 99.72 856 838 171.5
A 13 254 11539 62.4 856 838 171.5
B 0 190 20978 123.32 852 830 163.4
B 12 111 19520 114.4 852 830 163.4
B 11 111 17022 99.11 852 830 163.4
C 3 233 864522 4527.05 819 825 190.8
C 14 238 126901 660.83 819 825 190.8
C 8 222 20992 105.7 819 825 190.8
D 7 38 69445 336.96 842 816 203.7
D 13 168 47725 230.31 842 816 203.7
D 2 234 30317 144.84 842 816 203.7

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