ASTROSAT CZTI

Data Quality Report

Orbit 49805

Creation date: 2024-12-13T03:54:08.264843
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_037T01_9000006440_49805cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49805cztM0_level2_quad_clean.evt
Size (bytes)3,010,343,040148,605,120
Size2.8 GB 141.7 MB
Events in quadrant A24,946,6251,219,905
Events in quadrant B12,542,6501,798,703
Events in quadrant C28,877,16664,934
Events in quadrant D43,637,389138,425

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0869363
B0497103
C0988323
D01421563

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18517534328.854566%
B185177153.861317%
C185181794396.894913%
D185181721892.979803%

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 19777 18519 4871 4871 24.63% 26.30%
B 19777 18521 387 387 1.96% 2.09%
C 19777 18517 6341 6341 32.06% 34.24%
D 19777 18517 15777 15777 79.77% 85.20%

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 0 98 4337571 9917.16 1723 1677 437.2
A 4 204 3135010 7166.63 1723 1677 437.2
A 15 63 2417147 5524.72 1723 1677 437.2
B 2 176 677876 1644.55 1952 1889 411.0
B 5 172 660364 1601.95 1952 1889 411.0
B 5 185 647883 1571.58 1952 1889 411.0
C 15 147 13302745 89629.93 321 306 148.4
C 15 197 3539449 23846.24 321 306 148.4
C 15 230 2645304 17821.62 321 306 148.4
D 7 61 8077692 28318.25 865 830 285.2
D 15 168 5262184 18446.81 865 830 285.2
D 15 106 3392232 11890.58 865 830 285.2

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