ASTROSAT CZTI

Data Quality Report

Orbit 12306

Creation date: 2024-06-27T16:25:14.322882
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/AS1A04_183T02_9000001816_12306cztM0_level2.evt modeM0/AS1A04_183T02_9000001816_12306cztM0_level2_quad_clean.evt
Size (bytes)542,632,32088,119,360
Size517.5 MB 84.0 MB
Events in quadrant A5,032,441546,107
Events in quadrant B4,250,403548,563
Events in quadrant C3,104,785567,664
Events in quadrant D3,587,039534,301

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196472
B0168481
C0138341
D0151321

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67671892.792966%
B67673555.246047%
C6767260.384218%
D67671632.408748%

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 7393 6769 16 16 0.22% 0.24%
B 7393 6769 142 142 1.92% 2.10%
C 7393 6769 0 0 0.00% 0.00%
D 7393 6769 91 91 1.23% 1.34%

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 11 29 1292811 7862.95 809 791 164.3
A 1 162 166861 1010.67 809 791 164.3
A 9 143 142710 863.69 809 791 164.3
B 4 239 723853 4711.57 802 783 153.5
B 0 85 125086 809.97 802 783 153.5
B 11 51 90652 585.59 802 783 153.5
C 14 234 11624 58.41 793 796 185.4
C 13 61 5798 26.98 793 796 185.4
C 4 254 2682 10.17 793 796 185.4
D 13 104 290905 1540.44 785 764 188.4
D 1 52 86975 457.72 785 764 188.4
D 7 71 52738 275.94 785 764 188.4

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