ASTROSAT CZTI

Data Quality Report

Orbit 18070

Creation date: 2024-06-27T17:44:39.864679
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/AS1A06_003T04_9000002682_18070cztM0_level2.evt modeM0/AS1A06_003T04_9000002682_18070cztM0_level2_quad_clean.evt
Size (bytes)650,897,28081,037,440
Size620.7 MB 77.3 MB
Events in quadrant A4,712,403512,920
Events in quadrant B3,422,658528,299
Events in quadrant C3,435,960502,356
Events in quadrant D7,642,872397,521

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187031
B0149631
C0149371
D0276961

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73505086.911565%
B7351540.734594%
C7351610.829819%
D7351166622.663583%

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 7825 7351 65 65 0.83% 0.88%
B 7826 7352 0 0 0.00% 0.00%
C 7826 7352 0 0 0.00% 0.00%
D 7826 7351 1522 1522 19.45% 20.70%

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 14 111 1052874 5993.37 855 837 175.5
A 15 174 330122 1875.91 855 837 175.5
A 4 2 43752 244.48 855 837 175.5
B 12 111 20420 116.06 868 845 168.7
B 11 111 17889 101.05 868 845 168.7
B 14 111 14909 83.38 868 845 168.7
C 14 238 127583 641.31 836 840 197.6
C 3 233 20314 98.54 836 840 197.6
C 8 128 13475 63.93 836 840 197.6
D 7 238 4137461 22532.75 752 731 183.6
D 5 222 396866 2157.75 752 731 183.6
D 11 176 154009 834.9 752 731 183.6

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