ASTROSAT CZTI

Data Quality Report

Orbit 12062

Creation date: 2024-06-27T16:21:53.697768
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/AS1A03_085T02_9000001784_12062cztM0_level2.evt modeM0/AS1A03_085T02_9000001784_12062cztM0_level2_quad_clean.evt
Size (bytes)693,930,240106,312,320
Size661.8 MB 101.4 MB
Events in quadrant A3,858,406709,584
Events in quadrant B5,447,651688,848
Events in quadrant C3,604,455692,631
Events in quadrant D7,572,663581,163

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166752
B0215032
C0161502
D0278782

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7860700.890585%
B78604685.954198%
C7860410.521628%
D7860146518.638677%

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 8626 7863 3 3 0.03% 0.04%
B 8626 7863 205 205 2.38% 2.61%
C 8626 7863 0 0 0.00% 0.00%
D 8626 7863 1280 1280 14.84% 16.28%

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 1 162 58633 296.13 952 930 194.9
A 13 251 28923 143.66 952 930 194.9
A 1 178 22923 112.87 952 930 194.9
B 4 239 843409 4647.67 935 911 181.3
B 4 206 375887 2068.57 935 911 181.3
B 0 85 234080 1286.28 935 911 181.3
C 8 128 12641 54.89 917 920 213.5
C 13 61 6768 27.39 917 920 213.5
C 8 112 6702 27.08 917 920 213.5
D 1 52 4187923 21121.89 829 806 198.2
D 8 195 96330 481.87 829 806 198.2
D 13 122 95790 479.15 829 806 198.2

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter