ASTROSAT CZTI

Data Quality Report

Orbit 53959

Creation date: 2025-09-19T10:28:53.114680
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_057T04_9000006508_53959cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53959cztM0_level2_quad_clean.evt
Size (bytes)1,779,943,680195,739,200
Size1.7 GB 186.7 MB
Events in quadrant A9,405,7331,467,730
Events in quadrant B9,742,3971,556,414
Events in quadrant C16,988,6201,124,256
Events in quadrant D28,521,994678,920

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0387003
B0398754
C06146953
D09573736

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03240
B03240
C03240
D03240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A159226303.956789%
B159226313.963070%
C15913317319.939672%
D15916850553.436793%

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 17577 15926 324 324 1.84% 2.03%
B 17578 15927 223 223 1.27% 1.40%
C 17578 15924 2768 2768 15.75% 17.38%
D 17577 15925 6681 6681 38.01% 41.95%

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 0 8 891711 2107.91 1728 1687 422.2
A 15 174 680462 1607.59 1728 1687 422.2
A 13 248 400183 943.79 1728 1687 422.2
B 0 213 873866 2401.69 1705 1646 363.2
B 5 250 495805 1360.68 1705 1646 363.2
B 0 155 448338 1229.98 1705 1646 363.2
C 1 241 6959553 16381.95 1529 1509 424.7
C 9 38 1795512 4223.78 1529 1509 424.7
C 13 3 680133 1597.75 1529 1509 424.7
D 8 176 14120040 40813.38 1193 1137 345.9
D 2 165 2557815 7390.56 1193 1137 345.9
D 3 12 2412740 6971.2 1193 1137 345.9

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