ASTROSAT CZTI

Data Quality Report

Orbit 57966

Creation date: 2026-06-15T11:55:53.347340
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_031T01_9000006584_57966cztM0_level2.fits modeM0/AS1A14_031T01_9000006584_57966cztM0_level2_quad_clean.evt
Size (bytes)917,435,520105,134,400
Size874.9 MB 100.3 MB
Events in quadrant A11,815,411507,260
Events in quadrant B4,482,331833,729
Events in quadrant C4,192,389738,988
Events in quadrant D12,829,839527,351

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0409954
B0190360
C0185950
D0438990

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8283317138.283231%
B82832342.825063%
C8283800.965834%
D8284238928.838725%

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 8282 8282 2610 2610 31.51% 31.51%
B 8283 8283 96 96 1.16% 1.16%
C 8283 8283 51 51 0.62% 0.62%
D 8284 8284 2093 2093 25.27% 25.27%

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 10 251 8723808 45610.8 776 756 191.2
A 13 248 37082 189.94 776 756 191.2
A 3 245 33577 171.61 776 756 191.2
B 7 252 293411 1468.12 915 879 199.3
B 10 246 148045 738.58 915 879 199.3
B 6 51 101238 503.67 915 879 199.3
C 15 224 414324 1669.42 905 898 247.6
C 12 252 75494 301.22 905 898 247.6
C 14 254 61881 246.25 905 898 247.6
D 12 110 9013046 38953.82 820 782 231.4
D 12 251 172609 742.69 820 782 231.4
D 8 240 171367 737.32 820 782 231.4

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