ASTROSAT CZTI

Data Quality Report

Orbit 46779

Creation date: 2024-06-27T23:27:32.162125
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_053T01_9000006266_46779cztM0_level2.fits modeM0/AS1A13_053T01_9000006266_46779cztM0_level2_quad_clean.evt
Size (bytes)433,998,720103,446,720
Size413.9 MB 98.7 MB
Events in quadrant A5,941,670686,989
Events in quadrant B3,757,812720,309
Events in quadrant C2,855,518681,710
Events in quadrant D3,047,012626,631

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215021
B0152061
C0127461
D0132631

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59662984.994972%
B59661502.514247%
C5967711.189878%
D59671071.793196%

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 7181 5966 118 118 1.64% 1.98%
B 7181 5966 15 15 0.21% 0.25%
C 7182 5967 31 31 0.43% 0.52%
D 7182 5967 50 50 0.70% 0.84%

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 3011398 21489.41 681 669 140.1
A 13 248 212679 1513.24 681 669 140.1
A 9 191 51001 359.25 681 669 140.1
B 3 112 882946 6695.72 684 666 131.8
B 15 201 44003 328.89 684 666 131.8
B 0 198 24442 180.44 684 666 131.8
C 14 254 129828 836.69 668 673 154.4
C 12 249 36720 233.52 668 673 154.4
C 1 241 34712 220.51 668 673 154.4
D 10 181 120530 731.36 667 646 163.9
D 1 52 86378 523.01 667 646 163.9
D 2 249 65846 397.75 667 646 163.9

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