ASTROSAT CZTI

Data Quality Report

Orbit 45616

Creation date: 2024-06-27T23:14:14.303279
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/AS1A13_071T08_9000006114_45616cztM0_level2.fits modeM0/AS1A13_071T08_9000006114_45616cztM0_level2_quad_clean.evt
Size (bytes)1,271,453,760263,517,120
Size1.2 GB 251.3 MB
Events in quadrant A13,985,0271,762,597
Events in quadrant B9,211,2451,805,766
Events in quadrant C8,107,9731,740,884
Events in quadrant D14,452,6891,500,996

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0533682
B0392352
C0367532
D0547342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03440
B03440
C03440
D03440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A169382991.765262%
B169395153.040321%
C169393081.818289%
D1693910326.092449%

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 17533 16941 7 7 0.04% 0.04%
B 17534 16942 263 263 1.50% 1.55%
C 17534 16942 167 167 0.95% 0.99%
D 17534 16942 671 671 3.83% 3.96%

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 6616616 17097.35 1869 1830 386.9
A 10 255 45587 113.1 1869 1830 386.9
A 0 243 41596 102.78 1869 1830 386.9
B 5 172 808846 2221.38 1851 1794 363.3
B 15 201 485604 1331.67 1851 1794 363.3
B 5 32 174291 474.79 1851 1794 363.3
C 14 254 597057 1381.31 1839 1851 430.9
C 12 2 277900 640.63 1839 1851 430.9
C 3 233 33978 74.56 1839 1851 430.9
D 11 241 5154230 11242.65 1810 1756 458.3
D 8 48 509772 1108.49 1810 1756 458.3
D 11 224 381637 828.9 1810 1756 458.3

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