ASTROSAT CZTI

Data Quality Report

Orbit 28536

Creation date: 2024-06-27T19:53:00.591483
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_058T09_9000004100_28536cztM0_level2.evt modeM0/AS1A10_058T09_9000004100_28536cztM0_level2_quad_clean.evt
Size (bytes)540,489,60085,979,520
Size515.5 MB 82.0 MB
Events in quadrant A3,680,459541,622
Events in quadrant B3,423,461557,967
Events in quadrant C3,515,669528,600
Events in quadrant D5,289,235502,391

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154422
B0144142
C0146702
D0203573

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67792383.510842%
B67801772.610619%
C67801902.802360%
D67794526.667650%

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 7444 6780 96 96 1.29% 1.42%
B 7445 6780 1 1 0.01% 0.01%
C 7445 6781 2 2 0.03% 0.03%
D 7444 6780 267 267 3.59% 3.94%

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 15 174 423586 2454.91 840 820 172.2
A 13 254 13214 71.97 840 820 172.2
A 3 137 8510 44.65 840 820 172.2
B 10 245 48535 291.32 840 819 163.8
B 0 230 43062 257.91 840 819 163.8
B 12 111 20944 122.87 840 819 163.8
C 14 238 126210 645.74 809 813 194.2
C 3 233 123747 633.06 809 813 194.2
C 7 247 85888 438.1 809 813 194.2
D 1 52 1171346 6013.39 800 776 194.7
D 8 195 785392 4030.69 800 776 194.7
D 2 250 169519 866.86 800 776 194.7

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