ASTROSAT CZTI

Data Quality Report

Orbit 45878

Creation date: 2024-06-27T23:17:13.495931
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/AS1C07_001T01_9000006136_45878cztM0_level2.fits modeM0/AS1C07_001T01_9000006136_45878cztM0_level2_quad_clean.evt
Size (bytes)563,469,120111,424,320
Size537.4 MB 106.3 MB
Events in quadrant A6,233,353744,706
Events in quadrant B6,982,608669,531
Events in quadrant C3,276,526783,029
Events in quadrant D3,832,627698,130

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0235382
B0254622
C0148642
D0164962

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68692353.421168%
B6870128518.704512%
C6870921.339156%
D68701301.892285%

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 9019 6871 70 70 0.78% 1.02%
B 9020 6872 809 809 8.97% 11.77%
C 9020 6872 49 49 0.54% 0.71%
D 9020 6872 93 93 1.03% 1.35%

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 3098156 20144.78 744 728 153.8
A 0 247 198602 1286.92 744 728 153.8
A 0 226 18669 116.68 744 728 153.8
B 3 112 3983820 29445.31 701 680 135.3
B 4 171 153553 1130.11 701 680 135.3
B 12 111 16536 117.22 701 680 135.3
C 14 254 294923 1679.87 752 758 175.1
C 12 2 37306 208.71 752 758 175.1
C 3 233 6835 34.7 752 758 175.1
D 1 52 251903 1353.59 736 712 185.6
D 7 38 227823 1223.83 736 712 185.6
D 6 143 109897 588.37 736 712 185.6

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