ASTROSAT CZTI

Data Quality Report

Orbit 20241

Creation date: 2024-06-27T18:12:54.174697
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/AS1T03_123T01_9000003000_20241cztM0_level2.evt modeM0/AS1T03_123T01_9000003000_20241cztM0_level2_quad_clean.evt
Size (bytes)556,254,72092,367,360
Size530.5 MB 88.1 MB
Events in quadrant A3,500,659586,640
Events in quadrant B3,625,875590,202
Events in quadrant C3,672,627557,158
Events in quadrant D5,546,321549,291

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150461
B0153741
C0153531
D0214791

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7388730.988089%
B73881071.448295%
C73881461.976178%
D73882032.747699%

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 7783 7389 0 0 0.00% 0.00%
B 7783 7389 6 6 0.08% 0.08%
C 7783 7389 12 12 0.15% 0.16%
D 7783 7389 149 149 1.91% 2.02%

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 3 137 7823 37.86 909 888 183.2
A 0 226 7674 37.05 909 888 183.2
A 12 194 6379 29.98 909 888 183.2
B 0 230 45270 254.94 901 877 174.1
B 4 173 23053 127.35 901 877 174.1
B 12 111 21707 119.62 901 877 174.1
C 14 238 132889 646.94 866 870 204.1
C 3 233 68052 329.22 866 870 204.1
C 9 54 58640 283.1 866 870 204.1
D 7 238 1379899 6436.49 880 855 214.3
D 1 52 823778 3840.88 880 855 214.3
D 2 234 37075 169.05 880 855 214.3

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