ASTROSAT CZTI

Data Quality Report

Orbit 22253

Creation date: 2024-06-27T18:38:36.865926
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/AS1A07_018T07_9000003294_22253cztM0_level2.evt modeM0/AS1A07_018T07_9000003294_22253cztM0_level2_quad_clean.evt
Size (bytes)619,326,72092,335,680
Size590.6 MB 88.1 MB
Events in quadrant A3,282,666609,185
Events in quadrant B3,314,646618,387
Events in quadrant C3,889,537589,034
Events in quadrant D7,792,394489,046

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144581
B0144752
C0162271
D0278951

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7037670.952110%
B7037841.193690%
C70372703.836862%
D7037178025.294870%

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 7372 7038 0 0 0.00% 0.00%
B 7372 7038 0 0 0.00% 0.00%
C 7372 7038 158 158 2.14% 2.24%
D 7372 7038 1459 1459 19.79% 20.73%

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 10795 57.63 851 833 172.9
A 3 137 7507 38.61 851 833 172.9
A 0 226 7258 37.17 851 833 172.9
B 12 111 20365 119.52 843 822 163.5
B 11 111 17932 104.64 843 822 163.5
B 14 111 15582 90.27 843 822 163.5
C 10 22 624122 3300.77 804 808 188.8
C 14 238 125950 662.69 804 808 188.8
C 13 61 5801 26.44 804 808 188.8
D 1 52 3314625 18789.65 730 712 176.4
D 12 235 1590423 9013.55 730 712 176.4
D 13 172 34798 193.27 730 712 176.4

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