ASTROSAT CZTI

Data Quality Report

Orbit 12659

Creation date: 2024-06-27T16:30:40.152499
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/AS1A04_174T01_9000001876_12659cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12659cztM0_level2_quad_clean.evt
Size (bytes)550,203,84088,848,000
Size524.7 MB 84.7 MB
Events in quadrant A3,337,453568,189
Events in quadrant B5,058,045534,430
Events in quadrant C3,345,838569,042
Events in quadrant D4,447,672531,797

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142853
B0192502
C0144162
D0179522

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6988981.402404%
B69886499.287350%
C6988771.101889%
D69882633.763595%

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 7819 6989 0 0 0.00% 0.00%
B 7819 6989 479 479 6.13% 6.85%
C 7819 6989 3 3 0.04% 0.04%
D 7819 6989 190 190 2.43% 2.72%

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 8 15 11637 61.16 862 846 176.4
A 12 189 8607 43.99 862 846 176.4
A 0 226 7666 38.65 862 846 176.4
B 4 239 1561857 9709.6 833 811 160.8
B 11 51 120954 747.28 833 811 160.8
B 3 64 73468 451.92 833 811 160.8
C 15 208 53683 270.88 839 844 195.1
C 14 234 19082 93.5 839 844 195.1
C 13 61 6263 27.78 839 844 195.1
D 1 52 890282 4438.88 827 806 200.4
D 10 157 320238 1594.11 827 806 200.4
D 13 249 38291 187.07 827 806 200.4

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