ASTROSAT CZTI

Data Quality Report

Orbit 38398

Creation date: 2024-06-27T21:52:12.068175
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/AS1A12_025T10_9000005384_38398cztM0_level2.fits modeM0/AS1A12_025T10_9000005384_38398cztM0_level2_quad_clean.evt
Size (bytes)1,325,257,920255,654,720
Size1.2 GB 243.8 MB
Events in quadrant A8,964,6351,765,247
Events in quadrant B12,074,5471,629,955
Events in quadrant C7,606,7101,727,514
Events in quadrant D19,178,3941,515,409

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03280
B03280
C03280
D03280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0361555
B0462044
C0323044
D0685314

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A159751010.632238%
B15975167410.478873%
C1597590.056338%
D1597510536.591549%

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 21557 15979 58 58 0.27% 0.36%
B 21557 15979 1117 1117 5.18% 6.99%
C 21557 15979 2 2 0.01% 0.01%
D 21557 15979 965 965 4.48% 6.04%

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 10 83 1038667 2860.29 1799 1765 362.5
A 9 143 291396 798.95 1799 1765 362.5
A 12 16 236784 648.3 1799 1765 362.5
B 8 3 3490376 10711.43 1705 1659 325.7
B 0 183 944690 2895.39 1705 1659 325.7
B 5 184 339841 1038.32 1705 1659 325.7
C 15 214 664234 1635.89 1751 1757 405.0
C 12 249 44309 105.07 1751 1757 405.0
C 15 159 27422 63.37 1751 1757 405.0
D 10 203 9119762 21651.92 1715 1665 421.1
D 2 16 1305556 3096.23 1715 1665 421.1
D 2 250 452560 1070.7 1715 1665 421.1

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