ASTROSAT CZTI

Data Quality Report

Orbit 47694

Creation date: 2024-07-24T11:06:19.552391
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_082T01_9000006342_47694cztM0_level2.fits modeM0/AS1A13_082T01_9000006342_47694cztM0_level2_quad_clean.evt
Size (bytes)477,074,880114,523,200
Size455.0 MB 109.2 MB
Events in quadrant A7,236,154748,549
Events in quadrant B3,335,427784,071
Events in quadrant C3,129,146760,763
Events in quadrant D3,430,292699,098

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0271702
B0143602
C0141282
D0148632

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68143264.784268%
B68141472.157323%
C6814550.807162%
D68151011.482025%

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 7864 6814 16 16 0.20% 0.23%
B 7864 6814 19 19 0.24% 0.28%
C 7864 6814 1 1 0.01% 0.01%
D 7865 6815 18 18 0.23% 0.26%

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 3971081 24077.36 796 780 164.9
A 9 191 153651 927.06 796 780 164.9
A 7 3 34106 202.1 796 780 164.9
B 0 200 119465 758.69 796 773 156.4
B 0 198 24218 149.86 796 773 156.4
B 5 250 22658 139.89 796 773 156.4
C 12 2 42348 224.83 786 791 184.8
C 14 254 13539 68.97 786 791 184.8
C 6 247 12308 62.31 786 791 184.8
D 7 96 71700 352.51 795 765 201.2
D 2 249 61576 302.2 795 765 201.2
D 12 2 48367 236.56 795 765 201.2

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