ASTROSAT CZTI

Data Quality Report

Orbit 18428

Creation date: 2024-06-27T17:49:42.623892
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/AS1A05_199T01_9000002732_18428cztM0_level2.evt modeM0/AS1A05_199T01_9000002732_18428cztM0_level2_quad_clean.evt
Size (bytes)424,883,52091,609,920
Size405.2 MB 87.4 MB
Events in quadrant A3,009,117583,934
Events in quadrant B3,116,482598,599
Events in quadrant C3,115,822576,049
Events in quadrant D3,183,179561,587

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132911
B0135011
C0135061
D0139601

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6518470.721080%
B6519681.043105%
C6518931.426818%
D6518410.629027%

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 7488 6519 0 0 0.00% 0.00%
B 7489 6520 1 1 0.01% 0.02%
C 7488 6519 9 9 0.12% 0.14%
D 7488 6519 7 7 0.09% 0.11%

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 11 47 13844 82.89 779 763 157.8
A 0 226 6863 38.65 779 763 157.8
A 3 137 5879 32.42 779 763 157.8
B 12 111 17639 113.14 781 762 149.2
B 0 189 15735 100.38 781 762 149.2
B 11 111 15465 98.57 781 762 149.2
C 14 238 117780 674.77 744 748 173.4
C 3 233 84301 481.74 744 748 173.4
C 8 128 7570 39.33 744 748 173.4
D 1 52 151823 834.04 750 728 181.2
D 13 168 97272 532.92 750 728 181.2
D 2 234 26957 144.78 750 728 181.2

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