ASTROSAT CZTI

Data Quality Report

Orbit 41677

Creation date: 2024-06-27T22:31:35.534742
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_110T01_9000005686_41677cztM0_level2.fits modeM0/AS1T05_110T01_9000005686_41677cztM0_level2_quad_clean.evt
Size (bytes)319,798,08092,162,880
Size305.0 MB 87.9 MB
Events in quadrant A2,832,107635,484
Events in quadrant B2,575,453640,448
Events in quadrant C2,598,264610,882
Events in quadrant D3,437,710549,172

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115122
B0109032
C0106912
D0135942

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5061100.197589%
B5062280.553141%
C5062420.829712%
D50622494.919004%

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 7123 5062 4 4 0.06% 0.08%
B 7124 5063 18 18 0.25% 0.36%
C 7124 5063 34 34 0.48% 0.67%
D 7124 5063 236 236 3.31% 4.66%

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 500986 4191.05 590 579 119.4
A 13 248 15803 127.51 590 579 119.4
A 15 223 15028 121.01 590 579 119.4
B 0 186 171216 1537.48 582 566 111.0
B 0 190 73845 660.21 582 566 111.0
B 5 255 34920 309.51 582 566 111.0
C 15 214 205921 1540.3 576 579 133.3
C 0 10 136189 1017.23 576 579 133.3
C 15 111 7883 54.79 576 579 133.3
D 13 249 614314 4438.88 570 555 138.3
D 2 249 454280 3281.47 570 555 138.3
D 3 14 41544 296.44 570 555 138.3

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