ASTROSAT CZTI

Data Quality Report

Orbit 55553

Creation date: 2026-01-04T02:52:55.086188
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_021T06_9000006538_55553cztM0_level2.fits modeM0/AS1A14_021T06_9000006538_55553cztM0_level2_quad_clean.evt
Size (bytes)474,232,320112,201,920
Size452.3 MB 107.0 MB
Events in quadrant A3,492,477739,242
Events in quadrant B3,822,574782,738
Events in quadrant C5,590,861668,045
Events in quadrant D4,033,843657,572

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162880
B0173019
C02203110
D0178274

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7910230.290771%
B79061121.416646%
C79084015.070814%
D7909801.011506%

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 7910 7910 14 14 0.18% 0.18%
B 7910 7910 70 70 0.88% 0.88%
C 7911 7910 406 406 5.13% 5.13%
D 7911 7911 90 90 1.14% 1.14%

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 4 159 103947 498.55 824 800 206.9
A 0 8 75255 359.87 824 800 206.9
A 15 32 29424 138.35 824 800 206.9
B 2 249 218893 1257.73 809 780 173.4
B 10 247 130606 748.63 809 780 173.4
B 4 169 120832 692.27 809 780 173.4
C 9 38 1567146 7157.82 791 782 218.8
C 1 16 400066 1824.61 791 782 218.8
C 12 2 303503 1383.34 791 782 218.8
D 8 245 236120 1050.91 799 763 224.0
D 10 181 161241 716.56 799 763 224.0
D 11 129 106440 471.87 799 763 224.0

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