ASTROSAT CZTI

Data Quality Report

Orbit 26683

Creation date: 2024-06-27T19:31:45.395079
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/AS1A09_145T01_9000003848_26683cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26683cztM0_level2_quad_clean.evt
Size (bytes)566,616,96097,655,040
Size540.4 MB 93.1 MB
Events in quadrant A3,568,971634,087
Events in quadrant B3,740,641636,493
Events in quadrant C3,899,757608,794
Events in quadrant D5,467,268581,444

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148860
B0154570
C0158470
D0210260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7124450.631668%
B7125700.982456%
C71251522.133333%
D71256388.954386%

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 7574 7125 1 1 0.01% 0.01%
B 7575 7126 3 3 0.04% 0.04%
C 7575 7126 21 21 0.28% 0.29%
D 7575 7126 380 380 5.02% 5.33%

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 4 2 89143 484.64 893 878 182.1
A 0 13 34683 185.61 893 878 182.1
A 13 254 12517 63.91 893 878 182.1
B 0 189 115813 682.95 887 868 168.3
B 5 172 78081 458.77 887 868 168.3
B 12 111 19891 113.03 887 868 168.3
C 3 233 236705 1172.49 850 857 201.2
C 14 238 136631 674.98 850 857 201.2
C 2 16 99916 492.46 850 857 201.2
D 7 80 1102975 5349.33 834 811 206.0
D 2 250 497767 2411.97 834 811 206.0
D 1 52 492323 2385.54 834 811 206.0

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