ASTROSAT CZTI

Data Quality Report

Orbit 47131

Creation date: 2024-06-27T23:32:04.857296
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_003T01_9000006298_47131cztM0_level2.fits modeM0/AS1C09_003T01_9000006298_47131cztM0_level2_quad_clean.evt
Size (bytes)551,430,720119,505,600
Size525.9 MB 114.0 MB
Events in quadrant A7,475,463805,921
Events in quadrant B4,165,991813,695
Events in quadrant C3,395,633770,980
Events in quadrant D4,788,351700,807

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0279480
B0173990
C0158260
D0195930

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75691602.113886%
B75701491.968296%
C7570300.396301%
D75702343.091149%

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 7569 7569 19 19 0.25% 0.25%
B 7570 7570 107 107 1.41% 1.41%
C 7570 7570 20 20 0.26% 0.26%
D 7570 7570 204 204 2.69% 2.69%

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 4040087 23083.45 839 822 175.0
A 14 235 87442 495.01 839 822 175.0
A 13 248 35627 198.9 839 822 175.0
B 8 234 286613 1767.85 828 802 161.7
B 0 200 181079 1115.08 828 802 161.7
B 4 21 162412 999.62 828 802 161.7
C 14 254 187189 978.15 811 813 190.5
C 14 67 18261 91.57 811 813 190.5
C 15 208 16840 84.11 811 813 190.5
D 2 249 462865 2268.62 808 780 203.7
D 12 218 389350 1907.7 808 780 203.7
D 2 120 285615 1398.41 808 780 203.7

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