ASTROSAT CZTI

Data Quality Report

Orbit 43755

Creation date: 2024-06-27T22:55:24.276929
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_026T01_9000005904_43755cztM0_level2.fits modeM0/AS1A13_026T01_9000005904_43755cztM0_level2_quad_clean.evt
Size (bytes)732,856,320120,237,120
Size698.9 MB 114.7 MB
Events in quadrant A7,807,562796,668
Events in quadrant B4,792,136834,867
Events in quadrant C5,917,770808,174
Events in quadrant D8,014,003663,840

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0285580
B0193110
C0228800
D0291810

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77145657.324345%
B77152983.862605%
C77153754.860661%
D7715116115.048607%

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 7714 7714 486 486 6.30% 6.30%
B 7715 7715 113 113 1.46% 1.46%
C 7715 7715 338 338 4.38% 4.38%
D 7715 7715 698 698 9.05% 9.05%

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 14 63 2614802 14664.54 853 834 178.3
A 10 83 1001212 5612.19 853 834 178.3
A 15 223 312467 1748.28 853 834 178.3
B 0 200 705362 4075.05 865 838 172.9
B 5 235 117570 675.19 865 838 172.9
B 0 219 103290 592.59 865 838 172.9
C 15 158 2036449 10135.52 842 846 200.8
C 15 174 243636 1208.88 842 846 200.8
C 3 233 138312 684.46 842 846 200.8
D 1 52 886629 4209.02 803 778 210.5
D 5 235 868828 4124.44 803 778 210.5
D 4 212 515985 2447.95 803 778 210.5

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