ASTROSAT CZTI

Data Quality Report

Orbit 36189

Creation date: 2022-06-08T06:38:49.728833
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/AS1A11_097T17_9000005170_36189cztM0_level2.evt modeM0/AS1A11_097T17_9000005170_36189cztM0_level2_quad_clean.evt
Size (bytes)387,561,60060,963,840
Size369.6 MB 58.1 MB
Events in quadrant A2,515,195377,918
Events in quadrant B2,787,154391,553
Events in quadrant C2,901,795383,877
Events in quadrant D3,207,649356,298

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103753
B0112762
C0114982
D0126822

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4788360.751880%
B4788491.023392%
C4788400.835422%
D47881843.842941%

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 6941 4789 20 20 0.29% 0.42%
B 6941 4789 21 21 0.30% 0.44%
C 6941 4789 25 25 0.36% 0.52%
D 6941 4789 170 170 2.45% 3.55%

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 161449 1400.2 570 559 114.9
A 9 143 123100 1066.45 570 559 114.9
A 8 144 23931 203.4 570 559 114.9
B 5 172 211141 1914.18 573 559 110.0
B 0 213 162529 1472.3 573 559 110.0
B 5 236 112801 1020.27 573 559 110.0
C 15 214 217364 1664.32 560 565 130.3
C 0 207 212470 1626.74 560 565 130.3
C 0 10 130100 994.41 560 565 130.3
D 13 249 254540 1914.63 544 530 132.7
D 2 250 246858 1856.73 544 530 132.7
D 12 6 208956 1571.04 544 530 132.7

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