ASTROSAT CZTI

Data Quality Report

Orbit 56893

Creation date: 2026-04-04T07:37:45.511810
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_083T14_9000006564_56893cztM0_level2.fits modeM0/AS1A14_083T14_9000006564_56893cztM0_level2_quad_clean.evt
Size (bytes)1,261,241,280266,051,520
Size1.2 GB 253.7 MB
Events in quadrant A9,132,5631,788,038
Events in quadrant B10,395,1381,843,967
Events in quadrant C12,812,2591,554,394
Events in quadrant D12,867,6641,551,945

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03900
B03900
C03900
D03900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420493
B0447196
C0519743
D0520263

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A191082911.522922%
B191056053.166710%
C1910711906.228084%
D191089024.720536%

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 20288 19111 159 159 0.78% 0.83%
B 20287 19109 310 310 1.53% 1.62%
C 20287 19110 1010 1010 4.98% 5.29%
D 20288 19111 727 727 3.58% 3.80%

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 13 680776 1377.84 1976 1927 492.7
A 7 64 150414 301.38 1976 1927 492.7
A 4 249 127949 255.78 1976 1927 492.7
B 10 16 1458063 3593.84 1914 1851 405.2
B 7 0 248566 608.88 1914 1851 405.2
B 10 247 196899 481.37 1914 1851 405.2
C 13 3 3520489 6935.13 1838 1820 507.4
C 1 16 952949 1874.63 1838 1820 507.4
C 12 241 250505 490.15 1838 1820 507.4
D 8 240 1134936 2146.68 1870 1788 527.9
D 2 249 1087794 2057.38 1870 1788 527.9
D 3 12 947112 1790.86 1870 1788 527.9

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