ASTROSAT CZTI

Data Quality Report

Orbit 22773

Creation date: 2024-06-27T18:45:34.494863
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/AS1T03_168T01_9000003368_22773cztM0_level2.evt modeM0/AS1T03_168T01_9000003368_22773cztM0_level2_quad_clean.evt
Size (bytes)487,540,800136,949,760
Size465.0 MB 130.6 MB
Events in quadrant A3,332,806933,278
Events in quadrant B3,484,603939,905
Events in quadrant C3,370,832894,110
Events in quadrant D4,092,976884,658

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145962
B0149752
C0148282
D0168982

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7128480.673401%
B7129610.855660%
C7129981.374667%
D7129801.122177%

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 7348 7131 0 0 0.00% 0.00%
B 7349 7132 1 1 0.01% 0.01%
C 7349 7132 14 14 0.19% 0.20%
D 7349 7132 59 59 0.80% 0.83%

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 17 24696 139.96 854 838 170.5
A 13 254 13393 73.65 854 838 170.5
A 0 226 7526 39.23 854 838 170.5
B 0 230 89507 550.98 851 830 160.9
B 0 228 19067 113.31 851 830 160.9
B 12 111 18169 107.73 851 830 160.9
C 14 238 128617 674.62 809 814 189.4
C 10 22 81951 428.29 809 814 189.4
C 13 61 5821 26.43 809 814 189.4
D 1 52 610041 3049.92 822 798 199.8
D 12 233 137461 684.15 822 798 199.8
D 2 152 86332 428.19 822 798 199.8

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