ASTROSAT CZTI

Data Quality Report

Orbit 46138

Creation date: 2024-06-27T23:19:33.241386
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_098T02_9000006174_46138cztM0_level2.fits modeM0/AS1A13_098T02_9000006174_46138cztM0_level2_quad_clean.evt
Size (bytes)640,667,520102,568,320
Size611.0 MB 97.8 MB
Events in quadrant A6,314,427716,214
Events in quadrant B3,765,518736,190
Events in quadrant C3,653,405709,884
Events in quadrant D9,465,581477,842

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231851
B0156541
C0156701
D0327941

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66682233.344331%
B66692383.568751%
C66691952.923977%
D6669213632.028790%

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 7663 6669 6 6 0.08% 0.09%
B 7664 6670 111 111 1.45% 1.66%
C 7664 6670 143 143 1.87% 2.14%
D 7664 6670 1599 1599 20.86% 23.97%

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 3121770 20038.58 756 740 155.8
A 9 191 135820 867.28 756 740 155.8
A 14 235 119039 759.54 756 740 155.8
B 15 201 389481 2592.23 752 728 150.0
B 5 172 162993 1081.99 752 728 150.0
B 3 112 117266 777.08 752 728 150.0
C 14 254 606127 3464.21 738 743 174.8
C 12 2 162613 926.27 738 743 174.8
C 13 61 4885 23.7 738 743 174.8
D 1 52 3321706 20026.58 655 634 165.8
D 2 249 1361422 8205.76 655 634 165.8
D 8 129 717379 4322.08 655 634 165.8

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