ASTROSAT CZTI

Data Quality Report

Orbit 45797

Creation date: 2024-06-27T23:16:18.429999
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/AS1T05_088T01_9000006126_45797cztM0_level2.fits modeM0/AS1T05_088T01_9000006126_45797cztM0_level2_quad_clean.evt
Size (bytes)712,195,200118,039,680
Size679.2 MB 112.6 MB
Events in quadrant A6,552,156786,396
Events in quadrant B7,208,443747,205
Events in quadrant C3,461,491822,920
Events in quadrant D8,556,319691,351

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0239672
B0267310
C0158650
D0307610

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75623925.183814%
B7562101613.435599%
C75631051.388338%
D756390011.900040%

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 7562 7562 3 3 0.04% 0.04%
B 7562 7562 325 325 4.30% 4.30%
C 7563 7563 3 3 0.04% 0.04%
D 7563 7563 763 763 10.09% 10.09%

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 3069428 16658.28 875 854 184.2
A 10 223 57166 305.7 875 854 184.2
A 2 79 18333 94.89 875 854 184.2
B 3 112 2856238 17102.73 850 824 167.0
B 4 171 267719 1598.59 850 824 167.0
B 0 171 161936 964.99 850 824 167.0
C 12 2 22891 107.26 873 876 205.2
C 2 14 20776 96.96 873 876 205.2
C 14 96 10294 45.89 873 876 205.2
D 11 241 2955796 13805.73 849 822 214.0
D 1 52 907392 4235.52 849 822 214.0
D 8 48 357586 1666.81 849 822 214.0

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