ASTROSAT CZTI

Data Quality Report

Orbit 07947

Creation date: 2024-06-27T15:25:52.753882
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/AS1G06_117T01_9000001086_07947cztM0_level2.evt modeM0/AS1G06_117T01_9000001086_07947cztM0_level2_quad_clean.evt
Size (bytes)413,795,52085,991,040
Size394.6 MB 82.0 MB
Events in quadrant A2,873,983538,922
Events in quadrant B3,024,445559,982
Events in quadrant C2,896,181550,677
Events in quadrant D3,314,735521,156

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128533
B0131192
C0128572
D0143472

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6208190.306057%
B6208440.708763%
C6208220.354381%
D62081552.496778%

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 7498 6210 0 0 0.00% 0.00%
B 7498 6210 7 7 0.09% 0.11%
C 7498 6210 0 0 0.00% 0.00%
D 7498 6210 113 113 1.51% 1.82%

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 15 234 27016 176.8 736 721 148.7
A 0 226 6722 40.35 736 721 148.7
A 12 194 6199 36.83 736 721 148.7
B 10 245 57183 396.84 748 730 142.3
B 5 255 52352 362.88 748 730 142.3
B 12 111 15563 104.27 748 730 142.3
C 1 16 35618 207.26 725 730 168.3
C 8 128 15377 87.01 725 730 168.3
C 8 112 6599 34.87 725 730 168.3
D 1 52 553691 3236.31 708 686 170.9
D 5 97 27420 156.45 708 686 170.9
D 2 152 24500 139.36 708 686 170.9

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