ASTROSAT CZTI

Data Quality Report

Orbit 44898

Creation date: 2024-06-27T23:07:47.455145
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_017T02_9000006032_44898cztM0_level2.fits modeM0/AS1A13_017T02_9000006032_44898cztM0_level2_quad_clean.evt
Size (bytes)752,158,080120,283,200
Size717.3 MB 114.7 MB
Events in quadrant A6,451,697828,522
Events in quadrant B4,498,041843,698
Events in quadrant C5,532,091839,792
Events in quadrant D10,762,479591,494

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250163
B0186203
C0218305
D0374113

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77344065.249547%
B77344425.715025%
C77332643.413940%
D7733220528.514160%

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 7789 7736 42 42 0.54% 0.54%
B 7789 7736 72 72 0.92% 0.93%
C 7788 7735 140 140 1.80% 1.81%
D 7788 7735 1582 1582 20.31% 20.45%

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 2667734 13956.85 908 886 191.1
A 13 248 131823 685.25 908 886 191.1
A 10 248 111757 580.24 908 886 191.1
B 15 36 164655 920.77 904 877 177.9
B 5 255 130798 730.42 904 877 177.9
B 0 190 128362 716.73 904 877 177.9
C 9 54 1784105 8464.11 897 902 210.7
C 1 3 127209 599.53 897 902 210.7
C 15 208 38494 178.43 897 902 210.7
D 13 187 2282331 11069.86 808 782 206.1
D 1 52 1702611 8257.11 808 782 206.1
D 5 235 1046925 5075.79 808 782 206.1

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