ASTROSAT CZTI

Data Quality Report

Orbit 49855

Creation date: 2024-12-16T18:59:21.568507
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_037T01_9000006440_49855cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49855cztM0_level2_quad_clean.evt
Size (bytes)988,845,12057,110,400
Size943.0 MB 54.5 MB
Events in quadrant A6,693,180564,652
Events in quadrant B4,023,145669,548
Events in quadrant C12,500,27350,823
Events in quadrant D12,901,1906,707

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242521
B0161401
C0414291
D0426002

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A626481613.026820%
B62652954.708699%
C6265584393.264166%
D6264620899.106003%

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 7409 6265 658 658 8.88% 10.50%
B 7410 6265 101 101 1.36% 1.61%
C 7409 6264 3460 3460 46.70% 55.24%
D 7408 6263 3805 3805 51.36% 60.75%

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 3 84 1734324 10153.92 687 673 170.7
A 3 130 334114 1952.95 687 673 170.7
A 8 38 240296 1403.46 687 673 170.7
B 0 229 364417 2459.1 698 675 147.9
B 4 206 258784 1744.96 698 675 147.9
B 10 43 168355 1133.61 698 675 147.9
C 15 189 2560998 48478.2 172 171 52.8
C 4 111 2182553 41313.98 172 171 52.8
C 15 230 1628315 30821.88 172 171 52.8
D 7 61 6918770 120189.46 157 149 57.6
D 8 129 1661725 28864.7 157 149 57.6
D 7 126 879107 15269.15 157 149 57.6

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