ASTROSAT CZTI

Data Quality Report

Orbit 37865

Creation date: 2024-06-27T21:45:26.250507
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/AS1C07_001T12_9000005352_37865cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37865cztM0_level2_quad_clean.evt
Size (bytes)433,290,24088,574,400
Size413.2 MB 84.5 MB
Events in quadrant A2,723,159590,081
Events in quadrant B2,962,702591,799
Events in quadrant C2,752,507581,600
Events in quadrant D4,317,272540,839

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114313
B0123952
C0114622
D0166702

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A539570.129750%
B53951432.650602%
C5395120.222428%
D53953596.654310%

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 7128 5396 2 2 0.03% 0.04%
B 7128 5396 103 103 1.45% 1.91%
C 7128 5396 9 9 0.13% 0.17%
D 7128 5396 316 316 4.43% 5.86%

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 343560 2798.93 606 593 122.5
A 15 222 12884 100.31 606 593 122.5
A 13 6 9784 75.01 606 593 122.5
B 5 172 498119 4345.93 597 582 114.5
B 0 229 41452 357.0 597 582 114.5
B 0 230 37479 322.29 597 582 114.5
C 15 214 226768 1675.52 582 585 135.0
C 0 10 101563 748.03 582 585 135.0
C 14 67 80335 590.77 582 585 135.0
D 2 249 1011865 7159.15 573 556 141.3
D 1 52 586408 4147.3 573 556 141.3
D 12 235 118135 832.35 573 556 141.3

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