ASTROSAT CZTI

Data Quality Report

Orbit 51563

Creation date: 2025-04-10T13:18:17.024851
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_037T05_9000006460_51563cztM0_level2.fits modeM0/AS1A13_037T05_9000006460_51563cztM0_level2_quad_clean.evt
Size (bytes)1,028,151,360111,093,120
Size980.5 MB 105.9 MB
Events in quadrant A10,974,907639,498
Events in quadrant B8,130,927800,946
Events in quadrant C8,268,145709,867
Events in quadrant D10,024,534617,549

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0414572914
B0316171523
C0318591247
D0369751055

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01784
B01806
C01797
D01775

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8509194122.811141%
B855688610.355306%
C858995011.060659%
D8627138816.089023%

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 8822 8591 1598 1598 18.11% 18.60%
B 8867 8651 724 724 8.17% 8.37%
C 8870 8676 938 938 10.57% 10.81%
D 8901 8733 1454 1454 16.34% 16.65%

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 64 3110642 15219.65 821 800 204.3
A 12 3 1957908 9578.14 821 800 204.3
A 12 250 940690 4599.85 821 800 204.3
B 12 18 2057757 10863.62 880 849 189.3
B 10 44 1713981 9047.95 880 849 189.3
B 0 171 190755 1002.99 880 849 189.3
C 0 177 2840417 11961.12 860 853 237.4
C 12 250 604369 2542.19 860 853 237.4
C 13 3 357663 1502.99 860 853 237.4
D 8 176 3544448 15148.77 831 802 233.9
D 7 60 1091348 4661.99 831 802 233.9
D 12 6 708581 3025.69 831 802 233.9

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