ASTROSAT CZTI

Data Quality Report

Orbit 07474

Creation date: 2024-06-27T15:20:14.526789
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/AS1G06_116T01_9000001026_07474cztM0_level2.evt modeM0/AS1G06_116T01_9000001026_07474cztM0_level2_quad_clean.evt
Size (bytes)447,874,560123,958,080
Size427.1 MB 118.2 MB
Events in quadrant A3,126,227812,664
Events in quadrant B3,263,240832,532
Events in quadrant C3,017,158827,585
Events in quadrant D3,676,651789,621

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146102
B0148101
C0143711
D0157311

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7072460.650452%
B7072620.876697%
C7072210.296946%
D7072751.060520%

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 7422 7073 0 0 0.00% 0.00%
B 7422 7073 3 3 0.04% 0.04%
C 7422 7073 0 0 0.00% 0.00%
D 7422 7073 47 47 0.63% 0.66%

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 15 239 77931 479.65 785 766 160.9
A 8 15 15315 90.43 785 766 160.9
A 0 226 7339 40.86 785 766 160.9
B 0 214 76823 496.78 797 776 153.1
B 4 173 45621 292.95 797 776 153.1
B 4 81 30975 197.28 797 776 153.1
C 9 68 10634 55.25 769 773 178.5
C 13 61 6023 29.42 769 773 178.5
C 1 16 4749 22.28 769 773 178.5
D 12 221 255252 1364.09 760 734 186.6
D 2 14 152911 815.6 760 734 186.6
D 13 105 126826 675.79 760 734 186.6

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