ASTROSAT CZTI

Data Quality Report

Orbit 31980

Creation date: 2024-06-27T20:34:48.719508
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_058T12_9000004674_31980cztM0_level2.evt modeM0/AS1A10_058T12_9000004674_31980cztM0_level2_quad_clean.evt
Size (bytes)648,354,24086,711,040
Size618.3 MB 82.7 MB
Events in quadrant A3,640,735550,577
Events in quadrant B5,833,057541,690
Events in quadrant C4,212,638519,955
Events in quadrant D5,448,132498,303

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153972
B0226702
C0170112
D0212902

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7404430.580767%
B74041632.201513%
C74042243.025392%
D74045717.712048%

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 7789 7404 0 0 0.00% 0.00%
B 7789 7404 7 7 0.09% 0.09%
C 7789 7404 50 50 0.64% 0.68%
D 7789 7405 427 427 5.48% 5.77%

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 14 238 21816 110.79 937 919 188.6
A 13 254 13234 65.29 937 919 188.6
A 3 137 9595 46.0 937 919 188.6
B 6 159 2029583 11394.1 919 893 178.0
B 10 245 79418 441.03 919 893 178.0
B 15 33 27566 149.81 919 893 178.0
C 0 10 482148 2299.06 882 887 209.3
C 14 238 158386 752.4 882 887 209.3
C 3 233 50660 237.77 882 887 209.3
D 13 249 1008071 4840.59 873 849 208.1
D 8 195 636366 3054.22 873 849 208.1
D 10 199 161046 769.89 873 849 208.1

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