ASTROSAT CZTI

Data Quality Report

Orbit 31532

Creation date: 2024-06-27T20:29:39.021077
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/AS1A10_056T01_9000004598_31532cztM0_level2.evt modeM0/AS1A10_056T01_9000004598_31532cztM0_level2_quad_clean.evt
Size (bytes)616,728,96085,150,080
Size588.2 MB 81.2 MB
Events in quadrant A4,329,715507,611
Events in quadrant B5,461,513537,008
Events in quadrant C4,603,413514,197
Events in quadrant D3,793,637515,962

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176811
B0219451
C0185931
D0158731

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72285938.204206%
B72282803.873824%
C72293074.246784%
D72291922.655969%

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 7388 7228 348 348 4.71% 4.81%
B 7388 7228 0 0 0.00% 0.00%
C 7389 7229 18 18 0.24% 0.25%
D 7389 7229 10 10 0.14% 0.14%

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 13 1045156 6089.82 851 831 171.5
A 13 254 12956 70.7 851 831 171.5
A 3 137 9074 48.06 851 831 171.5
B 6 159 1872551 11237.33 857 835 166.6
B 4 80 120787 720.16 857 835 166.6
B 0 190 54823 324.13 857 835 166.6
C 3 233 1135099 5833.07 824 825 194.5
C 14 238 132881 679.11 824 825 194.5
C 10 22 68082 345.87 824 825 194.5
D 8 195 415952 2068.04 842 817 200.7
D 2 250 85180 420.26 842 817 200.7
D 12 233 71201 350.63 842 817 200.7

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