ASTROSAT CZTI

Data Quality Report

Orbit 13835

Creation date: 2024-06-27T16:46:42.452695
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_199T01_9000002040_13835cztM0_level2.evt modeM0/AS1A04_199T01_9000002040_13835cztM0_level2_quad_clean.evt
Size (bytes)437,189,76089,665,920
Size416.9 MB 85.5 MB
Events in quadrant A3,197,691572,527
Events in quadrant B3,202,802588,150
Events in quadrant C3,037,055571,154
Events in quadrant D3,372,335541,541

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135333
B0135562
C0130562
D0142672

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6328641.011378%
B6328490.774336%
C6328190.300253%
D6328360.568900%

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 7534 6330 24 24 0.32% 0.38%
B 7534 6329 11 11 0.15% 0.17%
C 7534 6330 0 0 0.00% 0.00%
D 7534 6330 12 12 0.16% 0.19%

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 9 143 92619 577.16 775 759 159.2
A 0 23 90190 561.9 775 759 159.2
A 15 69 17499 105.18 775 759 159.2
B 10 245 56855 380.38 781 764 147.5
B 4 80 21876 143.17 781 764 147.5
B 0 219 21526 140.8 781 764 147.5
C 3 233 81785 460.07 758 763 176.1
C 13 61 5349 26.04 758 763 176.1
C 14 234 1882 6.35 758 763 176.1
D 1 52 184014 1004.53 750 729 182.5
D 5 222 107546 585.43 750 729 182.5
D 10 157 99331 540.41 750 729 182.5

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