ASTROSAT CZTI

Data Quality Report

Orbit 20240424_A13_068T02_9000006200_level2

Creation date: 2024-04-29T08:48:23.906443
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/AS1A13_068T02_9000006200cztM0_level2.fits modeM0/AS1A13_068T02_9000006200cztM0_level2_quad_clean.evt
Size (bytes)554,664,960580,996,800
Size529.0 MB 554.1 MB
Events in quadrant A3,253,0143,484,237
Events in quadrant B3,198,3163,523,639
Events in quadrant C3,274,6483,357,496
Events in quadrant D2,816,5282,977,883

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012600
B012600
C012600
D012600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02095030
B01431760
C01502580
D01686460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0790
B0790
C0790
D0790

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6198623843.846030%
B6198617622.842577%
C6198617792.870003%
D6198631865.139870%

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 69966 61963 0 0 0.00% 0.00%
B 69966 61980 0 0 0.00% 0.00%
C 69966 61976 0 0 0.00% 0.00%
D 69966 61971 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 7 110 2593 8.26 849 792 218.0
A 15 236 2578 8.19 849 792 218.0
A 0 29 2529 7.97 849 792 218.0
B 2 9 2944 12.73 842 797 168.7
B 2 8 2352 9.22 842 797 168.7
B 3 17 2291 8.86 842 797 168.7
C 3 202 2459 7.33 864 800 226.2
C 1 81 2421 7.17 864 800 226.2
C 3 203 2362 6.9 864 800 226.2
D 10 113 2058 5.92 807 734 223.7
D 4 250 2020 5.75 807 734 223.7
D 10 189 2014 5.72 807 734 223.7

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