ASTROSAT CZTI

Data Quality Report

Orbit 31126

Creation date: 2024-06-27T20:23:41.763131
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/AS1A10_109T01_9000004492_31126cztM0_level2.evt modeM0/AS1A10_109T01_9000004492_31126cztM0_level2_quad_clean.evt
Size (bytes)466,879,68084,003,840
Size445.3 MB 80.1 MB
Events in quadrant A2,874,744547,385
Events in quadrant B4,583,654538,545
Events in quadrant C3,093,230524,423
Events in quadrant D3,187,385521,192

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123471
B0179491
C0130061
D0135051

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5900280.474576%
B59011131.914930%
C59011362.304694%
D5901651.101508%

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 6425 5901 0 0 0.00% 0.00%
B 6426 5902 1 1 0.02% 0.02%
C 6426 5902 8 8 0.12% 0.14%
D 6426 5902 49 49 0.76% 0.83%

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 13 254 8853 53.67 745 732 151.3
A 3 137 7773 46.53 745 732 151.3
A 0 226 6102 35.49 745 732 151.3
B 6 159 1631261 11452.33 733 715 142.4
B 0 183 25565 174.54 733 715 142.4
B 4 80 24205 164.98 733 715 142.4
C 14 238 115939 684.11 713 718 168.4
C 0 10 113576 670.08 713 718 168.4
C 10 22 64036 375.94 713 718 168.4
D 8 195 281360 1647.03 721 704 170.4
D 2 120 155386 907.75 721 704 170.4
D 2 250 31531 180.91 721 704 170.4

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