ASTROSAT CZTI

Data Quality Report

Orbit 03772

Creation date: 2024-06-27T14:33:28.617595
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/AS1G05_248T01_9000000486_03772cztM0_level2.evt modeM0/AS1G05_248T01_9000000486_03772cztM0_level2_quad_clean.evt
Size (bytes)539,020,80088,263,360
Size514.1 MB 84.2 MB
Events in quadrant A4,394,403533,081
Events in quadrant B4,141,888542,087
Events in quadrant C3,463,872534,855
Events in quadrant D3,793,665519,335

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185423
B0176812
C0158792
D0169462

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78082332.984119%
B7808700.896516%
C7808230.294570%
D7808831.063012%

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 9458 7810 114 114 1.21% 1.46%
B 9458 7809 2 2 0.02% 0.03%
C 9458 7810 0 0 0.00% 0.00%
D 9458 7810 53 53 0.56% 0.68%

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 0 118 295067 1596.91 892 871 184.2
A 0 50 269551 1458.4 892 871 184.2
A 13 251 266004 1439.15 892 871 184.2
B 15 204 501771 2795.12 914 889 179.2
B 15 54 19068 101.45 914 889 179.2
B 5 200 19030 101.23 914 889 179.2
C 2 53 15345 69.97 880 881 206.7
C 12 4 8051 34.69 880 881 206.7
C 13 61 7417 31.62 880 881 206.7
D 1 84 105443 490.62 875 848 213.2
D 13 223 89661 416.59 875 848 213.2
D 9 35 69551 322.26 875 848 213.2

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
Veto Counter