ASTROSAT CZTI

Data Quality Report

Orbit 58318

Creation date: 2026-07-09T04:05:31.058901
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_044T03_9000006588_58318cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58318cztM0_level2_quad_clean.evt
Size (bytes)1,240,081,920248,400,000
Size1.2 GB 236.9 MB
Events in quadrant A12,507,0371,581,371
Events in quadrant B13,114,7901,634,257
Events in quadrant C8,222,6341,586,454
Events in quadrant D10,674,0221,483,893

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03660
C03660
D03660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0496814
B0513604
C0379834
D0440264

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A179029345.217294%
B1790314818.272357%
C17902990.553011%
D179022361.318288%

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 19667 17906 777 777 3.95% 4.34%
B 19668 17907 934 934 4.75% 5.22%
C 19667 17906 39 39 0.20% 0.22%
D 19667 17906 180 180 0.92% 1.01%

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 2727197 5842.38 1882 1831 466.5
A 7 160 685863 1466.36 1882 1831 466.5
A 15 233 562254 1201.38 1882 1831 466.5
B 4 206 2580448 6629.9 1831 1763 388.9
B 2 249 873061 2240.14 1831 1763 388.9
B 5 185 624200 1600.31 1831 1763 388.9
C 9 38 278529 537.05 1864 1841 515.2
C 6 13 157583 302.3 1864 1841 515.2
C 12 254 76331 144.59 1864 1841 515.2
D 11 129 1460127 2802.85 1849 1770 520.3
D 12 110 495306 948.54 1849 1770 520.3
D 3 12 240516 458.85 1849 1770 520.3

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