ASTROSAT CZTI

Data Quality Report

Orbit 11794

Creation date: 2024-06-27T16:18:22.130791
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/AS1G08_058T09_9000001744_11794cztM0_level2.evt modeM0/AS1G08_058T09_9000001744_11794cztM0_level2_quad_clean.evt
Size (bytes)529,185,60085,610,880
Size504.7 MB 81.6 MB
Events in quadrant A4,948,659535,086
Events in quadrant B3,765,576555,619
Events in quadrant C2,947,876553,637
Events in quadrant D3,937,527508,493

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189753
B0150972
C0128442
D0160322

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62962193.478399%
B62961782.827192%
C629650.079416%
D62962373.764295%

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 7542 6298 137 137 1.82% 2.18%
B 7542 6298 71 71 0.94% 1.13%
C 7542 6298 0 0 0.00% 0.00%
D 7542 6298 201 201 2.67% 3.19%

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 1651104 10734.59 759 744 153.7
A 1 162 144252 933.43 759 744 153.7
A 1 178 78084 503.05 759 744 153.7
B 4 239 365158 2507.05 771 752 145.4
B 3 64 177846 1218.38 771 752 145.4
B 10 16 128845 881.26 771 752 145.4
C 13 61 5456 26.88 753 758 174.8
C 14 234 4332 20.45 753 758 174.8
C 8 128 4125 19.27 753 758 174.8
D 1 52 706269 3992.86 733 712 176.7
D 9 85 229713 1295.95 733 712 176.7
D 13 249 101181 568.57 733 712 176.7

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