ASTROSAT CZTI

Data Quality Report

Orbit 58633

Creation date: 2026-07-30T07:39:13.794258
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/AS1A14_004T06_9000006594_58633cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58633cztM0_level2_quad_clean.evt
Size (bytes)593,084,160112,481,280
Size565.6 MB 107.3 MB
Events in quadrant A3,856,501754,926
Events in quadrant B3,815,223803,591
Events in quadrant C7,726,224649,334
Events in quadrant D5,944,737650,000

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170671
B0169771
C0284391
D0233621

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7881360.456795%
B7880901.142132%
C7880113914.454315%
D78805747.284264%

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 7881 7881 7 7 0.09% 0.09%
B 7880 7880 10 10 0.13% 0.13%
C 7880 7880 978 978 12.41% 12.41%
D 7880 7880 470 470 5.96% 5.96%

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 12 114 307668 1431.77 861 838 214.3
A 10 251 105260 487.27 861 838 214.3
A 10 17 45494 208.38 861 838 214.3
B 8 128 97159 525.47 854 820 183.3
B 4 171 83386 450.35 854 820 183.3
B 8 234 63703 342.99 854 820 183.3
C 15 164 2389706 11016.89 795 788 216.8
C 15 217 1607745 7410.75 795 788 216.8
C 14 254 237829 1093.15 795 788 216.8
D 8 240 1438576 6245.73 814 777 230.2
D 11 129 758568 3291.81 814 777 230.2
D 2 249 192568 833.13 814 777 230.2

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