ASTROSAT CZTI

Data Quality Report

Orbit 48171

Creation date: 2024-08-24T23:09:15.661155
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/AS1C09_004T05_9000006408_48171cztM0_level2.fits modeM0/AS1C09_004T05_9000006408_48171cztM0_level2_quad_clean.evt
Size (bytes)428,060,16083,972,160
Size408.2 MB 80.1 MB
Events in quadrant A7,258,559717,600
Events in quadrant B1,727,863151
Events in quadrant C2,960,433715,704
Events in quadrant D3,398,936666,819

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258851
B088461
C0132531
D0145141

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63412954.652263%
B6341634099.984230%
C6341390.615045%
D6341620.977764%

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 7526 6342 62 62 0.82% 0.98%
B 7525 6340 69 69 0.92% 1.09%
C 7526 6342 7 7 0.09% 0.11%
D 7526 6342 15 15 0.20% 0.24%

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 4487605 30683.73 709 695 146.2
A 13 254 13979 90.84 709 695 146.2
A 0 243 8349 52.34 709 695 146.2
B 2 177 827694 77667.21 43 42 10.7
B 12 18 671316 62992.63 43 42 10.7
B 4 21 16563 1550.34 43 42 10.7
C 12 2 110334 658.42 711 714 166.5
C 14 254 29745 174.37 711 714 166.5
C 12 249 14255 81.33 711 714 166.5
D 2 165 199721 1117.82 715 693 178.1
D 8 48 111181 620.54 715 693 178.1
D 13 29 57039 316.46 715 693 178.1

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