ASTROSAT CZTI

Data Quality Report

Orbit 20240505_A13_091T05_9000006224_level2

Creation date: 2024-05-09T10:44:54.580867
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_091T05_9000006224cztM0_level2.fits modeM0/AS1A13_091T05_9000006224cztM0_level2_quad_clean.evt
Size (bytes)486,878,400451,005,120
Size464.3 MB 430.1 MB
Events in quadrant A2,839,7582,533,954
Events in quadrant B2,702,3902,523,408
Events in quadrant C2,922,4542,543,594
Events in quadrant D2,508,2342,288,909

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0930
B0930
C0930
D0930

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02086100
B01498840
C01223390
D01400830

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011140
B011140
C011140
D011140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5493035066.382669%
B5493053589.754233%
C549308541.554706%
D5493018923.444384%

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 64015 54919 0 0 0.00% 0.00%
B 64015 54625 0 0 0.00% 0.00%
C 64015 54924 0 0 0.00% 0.00%
D 64015 54911 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 7 110 2300 8.53 741 690 188.8
A 0 29 2199 7.99 741 690 188.8
A 0 30 2078 7.35 741 690 188.8
B 2 9 2531 12.99 714 677 142.7
B 2 8 2003 9.29 714 677 142.7
B 3 17 1964 9.02 714 677 142.7
C 3 202 2218 7.57 774 721 197.9
C 1 81 2206 7.51 774 721 197.9
C 3 203 2203 7.49 774 721 197.9
D 6 38 1860 6.02 721 655 200.2
D 12 6 1817 5.8 721 655 200.2
D 6 67 1793 5.68 721 655 200.2

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