ASTROSAT CZTI

Data Quality Report

Orbit 48450

Creation date: 2024-09-12T18:48:55.193136
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/AS1A13_029T01_9000006426_48450cztM0_level2.fits modeM0/AS1A13_029T01_9000006426_48450cztM0_level2_quad_clean.evt
Size (bytes)562,271,040117,671,040
Size536.2 MB 112.2 MB
Events in quadrant A8,345,786749,200
Events in quadrant B3,882,438793,877
Events in quadrant C3,538,490778,997
Events in quadrant D4,448,352703,983

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0308051
B0168812
C0163971
D0186911

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77127279.426867%
B77114495.822850%
C77112963.838672%
D77123754.862552%

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 7767 7712 139 139 1.79% 1.80%
B 7766 7712 14 14 0.18% 0.18%
C 7766 7712 1 1 0.01% 0.01%
D 7767 7713 57 57 0.73% 0.74%

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 10 83 4389109 23378.91 888 868 187.7
A 13 248 397660 2113.96 888 868 187.7
A 7 3 67377 354.34 888 868 187.7
B 12 16 252422 1364.35 896 866 184.4
B 5 255 40233 213.51 896 866 184.4
B 12 111 23712 123.91 896 866 184.4
C 12 2 15224 66.45 898 902 215.5
C 14 67 11131 47.46 898 902 215.5
C 13 61 5997 23.64 898 902 215.5
D 11 224 451756 1953.85 902 873 230.8
D 10 199 154839 667.2 902 873 230.8
D 2 249 99257 426.34 902 873 230.8

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