ASTROSAT CZTI

Data Quality Report

Orbit 14499

Creation date: 2024-06-27T16:56:03.466901
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/AS1G08_066T01_9000002138_14499cztM0_level2.evt modeM0/AS1G08_066T01_9000002138_14499cztM0_level2_quad_clean.evt
Size (bytes)453,772,80065,309,760
Size432.8 MB 62.3 MB
Events in quadrant A3,271,471386,611
Events in quadrant B3,596,521386,463
Events in quadrant C3,258,703378,421
Events in quadrant D3,175,422373,789

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138343
B0149102
C0136182
D0138512

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6479630.972372%
B6479911.404538%
C6479260.401296%
D6479540.833462%

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 7605 6481 8 8 0.11% 0.12%
B 7605 6481 17 17 0.22% 0.26%
C 7605 6481 0 0 0.00% 0.00%
D 7605 6481 12 12 0.16% 0.19%

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 12 189 66898 402.28 816 800 164.3
A 4 2 39781 237.24 816 800 164.3
A 8 15 16141 93.37 816 800 164.3
B 3 209 109770 705.17 814 795 154.5
B 10 245 76565 490.3 814 795 154.5
B 0 219 47183 300.17 814 795 154.5
C 3 233 175007 965.2 784 788 180.5
C 0 207 23746 127.19 784 788 180.5
C 13 61 5678 27.09 784 788 180.5
D 10 199 74989 374.77 786 767 198.0
D 12 110 39014 193.12 786 767 198.0
D 7 223 32250 158.97 786 767 198.0

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