ASTROSAT CZTI

Data Quality Report

Orbit 20190201_T03_080T01_9000002686_level2

Creation date: 2025-11-26T22:13:02.692919
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_080T01_9000002686cztM0_level2.fits modeM0/AS1T03_080T01_9000002686cztM0_level2_quad_clean.evt
Size (bytes)586,457,280747,322,560
Size559.3 MB 712.7 MB
Events in quadrant A3,624,7464,865,582
Events in quadrant B3,443,0144,790,929
Events in quadrant C3,514,7484,654,728
Events in quadrant D3,007,9904,154,663

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012360
B012360
C012360
D012360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01277160
B01283050
C01252970
D01619200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A607908081.329166%
B607908551.406481%
C607908861.457477%
D6079039716.532324%

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 71260 60789 0 0 0.00% 0.00%
B 71260 60789 0 0 0.00% 0.00%
C 71260 60788 0 0 0.00% 0.00%
D 71260 60697 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 0 29 3408 10.75 946 889 234.3
A 7 110 2829 8.28 946 889 234.3
A 0 30 2733 7.87 946 889 234.3
B 2 9 2784 10.85 910 872 176.3
B 2 8 2358 8.43 910 872 176.3
B 3 17 2276 7.96 910 872 176.3
C 1 81 2818 8.26 926 871 235.8
C 1 80 2705 7.78 926 871 235.8
C 12 250 2505 6.93 926 871 235.8
D 10 190 2244 6.41 859 785 227.6
D 15 46 2222 6.31 859 785 227.6
D 3 14 2219 6.3 859 785 227.6

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