ASTROSAT CZTI

Data Quality Report

Orbit 31359

Creation date: 2024-06-27T20:27:14.986351
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/AS1A10_101T01_9000004546_31359cztM0_level2.evt modeM0/AS1A10_101T01_9000004546_31359cztM0_level2_quad_clean.evt
Size (bytes)555,272,64085,881,600
Size529.5 MB 81.9 MB
Events in quadrant A3,385,802541,441
Events in quadrant B5,497,774537,141
Events in quadrant C3,713,513507,721
Events in quadrant D3,732,599514,287

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145931
B0217053
C0155081
D0158561

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7179350.487533%
B7179991.379022%
C71793945.488230%
D7179250.348238%

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 7584 7180 0 0 0.00% 0.00%
B 7584 7180 3 3 0.04% 0.04%
C 7584 7180 3 3 0.04% 0.04%
D 7584 7180 0 0 0.00% 0.00%

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 13 254 12962 68.18 878 859 177.5
A 3 137 8885 45.21 878 859 177.5
A 0 226 7284 36.19 878 859 177.5
B 6 159 2020453 12063.62 862 840 167.4
B 0 190 54379 319.8 862 840 167.4
B 12 111 20701 118.63 862 840 167.4
C 14 238 220049 1126.56 824 828 194.6
C 14 254 111211 567.25 824 828 194.6
C 3 233 83297 423.8 824 828 194.6
D 8 195 420141 2081.23 847 825 201.5
D 12 79 49516 241.67 847 825 201.5
D 2 234 33534 162.35 847 825 201.5

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