ASTROSAT CZTI

Data Quality Report

Orbit 06801

Creation date: 2024-06-27T15:11:49.447762
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/AS1G06_086T02_9000000936_06801cztM0_level2.evt modeM0/AS1G06_086T02_9000000936_06801cztM0_level2_quad_clean.evt
Size (bytes)484,732,80061,142,400
Size462.3 MB 58.3 MB
Events in quadrant A3,329,119355,032
Events in quadrant B3,635,457351,323
Events in quadrant C3,309,687352,518
Events in quadrant D3,965,269339,485

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140933
B0151002
C0139972
D0162812

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64871021.572376%
B64871852.851858%
C6487640.986589%
D64872013.098505%

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 7747 6488 2 2 0.03% 0.03%
B 7747 6488 77 77 0.99% 1.19%
C 7747 6488 4 4 0.05% 0.06%
D 7747 6488 79 79 1.02% 1.22%

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 13 248 70777 411.19 845 828 170.1
A 0 226 8309 43.98 845 828 170.1
A 12 194 7795 40.95 845 828 170.1
B 0 228 256100 1609.75 842 826 158.6
B 11 51 90323 564.36 842 826 158.6
B 12 111 15219 90.76 842 826 158.6
C 12 16 70540 372.89 816 822 187.0
C 9 247 53709 282.87 816 822 187.0
C 13 61 6402 29.84 816 822 187.0
D 13 169 496640 2486.06 813 787 199.5
D 8 195 162783 812.2 813 787 199.5
D 14 34 123200 613.74 813 787 199.5

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