ASTROSAT CZTI

Data Quality Report

Orbit 13431

Creation date: 2024-06-27T16:40:41.699825
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_103T01_9000001988_13431cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13431cztM0_level2_quad_clean.evt
Size (bytes)542,952,00074,318,400
Size517.8 MB 70.9 MB
Events in quadrant A3,412,517461,698
Events in quadrant B3,455,510468,995
Events in quadrant C3,388,380456,550
Events in quadrant D5,742,720405,976

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143493
B0144302
C0142252
D0215362

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65471121.710707%
B65471251.909271%
C6547761.160837%
D654775511.531999%

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 7803 6548 0 0 0.00% 0.00%
B 7803 6548 0 0 0.00% 0.00%
C 7803 6548 0 0 0.00% 0.00%
D 7803 6548 584 584 7.48% 8.92%

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 1 162 14187 75.44 881 865 176.6
A 0 226 7931 40.01 881 865 176.6
A 12 194 6534 32.1 881 865 176.6
B 12 111 18277 106.02 878 858 164.3
B 0 214 17195 99.43 878 858 164.3
B 11 111 15796 90.92 878 858 164.3
C 3 233 72967 374.44 848 853 192.6
C 14 234 7172 32.81 848 853 192.6
C 13 61 6153 27.52 848 853 192.6
D 13 249 2455433 12721.52 807 783 193.0
D 8 195 183993 949.51 807 783 193.0
D 2 136 47747 243.4 807 783 193.0

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