ASTROSAT CZTI

Data Quality Report

Orbit 47625

Creation date: 2024-07-19T03:52:41.527664
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_071T01_9000006340_47625cztM0_level2.fits modeM0/AS1A13_071T01_9000006340_47625cztM0_level2_quad_clean.evt
Size (bytes)578,396,160117,328,320
Size551.6 MB 111.9 MB
Events in quadrant A7,963,642793,551
Events in quadrant B5,471,704731,992
Events in quadrant C3,309,538779,580
Events in quadrant D4,077,272719,559

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0291982
B0214670
C0156030
D0175150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75842723.586498%
B758484511.141878%
C758580.105471%
D75851051.384311%

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 7584 7584 107 107 1.41% 1.41%
B 7584 7584 710 710 9.36% 9.36%
C 7585 7585 6 6 0.08% 0.08%
D 7585 7585 89 89 1.17% 1.17%

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 4028346 22984.83 835 816 175.2
A 9 191 324972 1849.94 835 816 175.2
A 13 248 318938 1815.5 835 816 175.2
B 5 32 1312972 8298.72 790 765 158.1
B 5 172 823707 5204.49 790 765 158.1
B 0 190 74434 465.9 790 765 158.1
C 3 233 58444 297.92 819 822 193.4
C 14 254 46343 235.35 819 822 193.4
C 1 3 12499 60.37 819 822 193.4
D 2 249 447384 2147.72 820 791 207.9
D 2 165 201402 964.76 820 791 207.9
D 2 120 112963 539.45 820 791 207.9

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