ASTROSAT CZTI

Data Quality Report

Orbit 14239

Creation date: 2024-06-27T16:52:22.404431
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/AS1G08_069T01_9000002102_14239cztM0_level2.evt modeM0/AS1G08_069T01_9000002102_14239cztM0_level2_quad_clean.evt
Size (bytes)583,819,20097,891,200
Size556.8 MB 93.4 MB
Events in quadrant A5,045,333646,560
Events in quadrant B3,357,741646,048
Events in quadrant C3,362,803629,173
Events in quadrant D5,484,235598,771

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190153
B0138192
C0137572
D0206272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63695398.462867%
B6369620.973465%
C6369400.628042%
D63693195.008636%

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 7525 6371 365 365 4.85% 5.73%
B 7525 6371 17 17 0.23% 0.27%
C 7525 6371 0 0 0.00% 0.00%
D 7525 6371 280 280 3.72% 4.39%

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 9 143 1931697 12113.6 792 775 159.4
A 8 15 52594 325.09 792 775 159.4
A 12 189 15510 92.44 792 775 159.4
B 0 229 125429 819.24 805 783 152.1
B 4 97 37083 238.58 805 783 152.1
B 4 48 24195 153.88 805 783 152.1
C 3 233 249158 1353.48 798 803 183.5
C 13 61 5422 25.17 798 803 183.5
C 14 234 2758 10.65 798 803 183.5
D 5 222 1898667 10344.25 783 767 183.5
D 8 195 493447 2685.29 783 767 183.5
D 10 199 85706 462.95 783 767 183.5

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