ASTROSAT CZTI

Data Quality Report

Orbit 09801

Creation date: 2024-06-27T15:50:49.434826
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/AS1G05_218T01_9000001394_09801cztM0_level2.evt modeM0/AS1G05_218T01_9000001394_09801cztM0_level2_quad_clean.evt
Size (bytes)562,262,40087,433,920
Size536.2 MB 83.4 MB
Events in quadrant A3,433,184534,737
Events in quadrant B3,487,138557,747
Events in quadrant C3,261,294552,103
Events in quadrant D6,372,551515,891

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148363
B0148812
C0145382
D0238422

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69921261.802059%
B69921381.973684%
C6992540.772311%
D69925007.151030%

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 7872 6993 4 4 0.05% 0.06%
B 7872 6993 10 10 0.13% 0.14%
C 7872 6993 0 0 0.00% 0.00%
D 7872 6993 324 324 4.12% 4.63%

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 13 248 24120 129.03 887 872 180.2
A 0 226 8114 40.2 887 872 180.2
A 12 194 7267 35.49 887 872 180.2
B 10 252 21458 121.17 874 855 170.0
B 12 111 18559 104.12 874 855 170.0
B 15 85 16929 94.54 874 855 170.0
C 14 234 6224 27.69 833 838 194.5
C 10 22 6073 26.91 833 838 194.5
C 13 61 6058 26.84 833 838 194.5
D 1 52 2958943 13717.31 819 802 215.7
D 2 152 110876 510.43 819 802 215.7
D 9 85 78635 360.92 819 802 215.7

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