ASTROSAT CZTI

Data Quality Report

Orbit 20190106_T03_042T01_9000002630_level2

Creation date: 2024-11-14T17:10:41.684241
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/AS1T03_042T01_9000002630cztM0_level2.fits modeM0/AS1T03_042T01_9000002630cztM0_level2_quad_clean.evt
Size (bytes)1,125,198,7201,083,867,840
Size1.0 GB 1.0 GB
Events in quadrant A6,963,2826,600,075
Events in quadrant B6,801,0666,736,012
Events in quadrant C6,902,4966,380,635
Events in quadrant D5,217,3104,927,667

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02040
B02040
C02040
D02040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02567780
B02500710
C02493470
D04515650

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024340
B024340
C024340
D024340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11939021001.758941%
B11939014691.230421%
C11939017361.454058%
D1193902470220.690175%

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 139720 119385 0 0 0.00% 0.00%
B 139720 119388 0 0 0.00% 0.00%
C 139720 119386 0 0 0.00% 0.00%
D 139720 118450 0 0 0.00% 0.00%

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 0 29 6595 11.08 1810 1699 441.8
A 7 110 5610 8.85 1810 1699 441.8
A 9 19 5280 8.11 1810 1699 441.8
B 2 9 5715 11.43 1794 1709 350.3
B 2 8 4661 8.43 1794 1709 350.3
B 3 80 4479 7.91 1794 1709 350.3
C 1 80 5235 7.55 1822 1695 469.0
C 1 81 5159 7.38 1822 1695 469.0
C 12 241 4835 6.69 1822 1695 469.0
D 6 231 3817 6.23 1488 1354 395.2
D 3 14 3758 6.08 1488 1354 395.2
D 15 46 3707 5.95 1488 1354 395.2

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