ASTROSAT CZTI

Data Quality Report

Orbit 14866

Creation date: 2024-06-27T17:00:38.811882
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_218T01_9000002194_14866cztM0_level2.evt modeM0/AS1A04_218T01_9000002194_14866cztM0_level2_quad_clean.evt
Size (bytes)500,077,440105,995,520
Size476.9 MB 101.1 MB
Events in quadrant A3,222,250728,765
Events in quadrant B3,358,605718,438
Events in quadrant C3,171,853704,212
Events in quadrant D4,986,816641,352

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131302
B0136731
C0129741
D0188101

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59771091.823657%
B59771342.241927%
C5977851.422118%
D597771111.895600%

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 7248 5979 6 6 0.08% 0.10%
B 7248 5979 24 24 0.33% 0.40%
C 7248 5979 2 2 0.03% 0.03%
D 7248 5979 529 529 7.30% 8.85%

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 12 189 78589 484.04 800 787 160.7
A 4 2 41727 254.7 800 787 160.7
A 15 239 14583 85.83 800 787 160.7
B 4 48 67639 451.39 780 762 148.2
B 0 189 67624 451.29 780 762 148.2
B 3 64 61159 407.65 780 762 148.2
C 3 233 186564 1074.28 760 767 172.9
C 0 207 8850 46.74 760 767 172.9
C 7 220 7453 38.66 760 767 172.9
D 7 254 1659724 9386.25 724 705 176.7
D 13 104 504105 2848.09 724 705 176.7
D 7 38 38940 216.32 724 705 176.7

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