ASTROSAT CZTI

Data Quality Report

Orbit 52869

Creation date: 2025-07-16T11:39:54.075653
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/AS1C09_011T08_9000006482_52869cztM0_level2.fits modeM0/AS1C09_011T08_9000006482_52869cztM0_level2_quad_clean.evt
Size (bytes)1,932,802,560251,628,480
Size1.8 GB 240.0 MB
Events in quadrant A19,170,3791,481,338
Events in quadrant B18,331,1271,711,207
Events in quadrant C15,218,4861,608,818
Events in quadrant D17,337,9971,485,822

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0706724
B0681324
C0591274
D0650214

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03940
B03940
C03940
D03940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19301345817.916170%
B19302245012.692985%
C1930216168.372189%
D19301232612.051189%

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 20631 19303 2993 2993 14.51% 15.51%
B 20632 19306 1440 1440 6.98% 7.46%
C 20632 19306 1254 1254 6.08% 6.50%
D 20631 19306 2025 2025 9.82% 10.49%

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 9 191 9428358 20345.19 1845 1799 463.3
A 0 8 743286 1600.34 1845 1799 463.3
A 3 62 433575 931.89 1845 1799 463.3
B 8 3 8932791 21762.67 1950 1881 410.4
B 4 81 427362 1036.8 1950 1881 410.4
B 0 213 306950 743.39 1950 1881 410.4
C 2 12 4363811 8188.11 1929 1904 532.7
C 13 3 905114 1695.49 1929 1904 532.7
C 15 224 554178 1036.72 1929 1904 532.7
D 8 176 2781001 5144.33 1886 1800 540.2
D 12 17 2371213 4385.81 1886 1800 540.2
D 15 125 874418 1615.22 1886 1800 540.2

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