ASTROSAT CZTI

Data Quality Report

Orbit 44301

Creation date: 2024-06-27T23:01:49.249794
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_004T13_9000005988_44301cztM0_level2.fits modeM0/AS1A13_004T13_9000005988_44301cztM0_level2_quad_clean.evt
Size (bytes)491,644,800115,269,120
Size468.9 MB 109.9 MB
Events in quadrant A4,966,201785,487
Events in quadrant B3,969,150786,820
Events in quadrant C3,243,257773,531
Events in quadrant D5,503,108679,791

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202092
B0162192
C0141952
D0209112

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66632313.466907%
B66643294.936975%
C6663801.200660%
D66635838.749812%

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 7788 6663 13 13 0.17% 0.20%
B 7789 6665 167 167 2.14% 2.51%
C 7788 6664 12 12 0.15% 0.18%
D 7788 6664 408 408 5.24% 6.12%

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 1782272 10821.31 795 779 164.6
A 7 3 48511 289.94 795 779 164.6
A 10 248 24546 144.37 795 779 164.6
B 10 245 447043 2982.44 771 748 149.6
B 0 219 136773 909.01 771 748 149.6
B 4 158 97093 643.84 771 748 149.6
C 14 254 140557 762.35 779 785 183.3
C 1 3 30207 160.47 779 785 183.3
C 3 233 25565 135.16 779 785 183.3
D 13 249 959011 5059.13 765 742 189.4
D 2 153 266855 1404.93 765 742 189.4
D 13 171 266224 1401.6 765 742 189.4

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