ASTROSAT CZTI

Data Quality Report

Orbit 06981

Creation date: 2024-06-27T15:14:02.377296
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/AS1A02_090T02_9000000956_06981cztM0_level2.evt modeM0/AS1A02_090T02_9000000956_06981cztM0_level2_quad_clean.evt
Size (bytes)469,287,36080,922,240
Size447.5 MB 77.2 MB
Events in quadrant A3,303,135491,491
Events in quadrant B3,497,576494,365
Events in quadrant C3,223,512493,067
Events in quadrant D3,706,298477,957

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147572
B0151921
C0145961
D0157181

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70861261.778154%
B70861942.737793%
C7086991.397121%
D70861622.286198%

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 7186 7087 1 1 0.01% 0.01%
B 7186 7087 18 18 0.25% 0.25%
C 7186 7087 0 0 0.00% 0.00%
D 7186 7087 45 45 0.63% 0.63%

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 14 239 54170 308.55 840 820 172.9
A 0 226 8215 42.77 840 820 172.9
A 12 194 7641 39.45 840 820 172.9
B 0 228 142828 861.04 845 821 164.9
B 4 81 24636 144.4 845 821 164.9
B 4 80 17528 101.3 845 821 164.9
C 13 61 6408 29.2 821 823 191.2
C 1 16 5720 25.61 821 823 191.2
C 12 4 4680 20.17 821 823 191.2
D 8 195 341565 1652.52 814 785 206.2
D 1 255 95137 457.54 814 785 206.2
D 2 136 78052 374.69 814 785 206.2

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