ASTROSAT CZTI

Data Quality Report

Orbit 04076

Creation date: 2024-06-27T14:37:04.728264
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/AS1G05_222T01_9000000520_04076cztM0_level2.evt modeM0/AS1G05_222T01_9000000520_04076cztM0_level2_quad_clean.evt
Size (bytes)1,102,245,120155,543,040
Size1.0 GB 148.3 MB
Events in quadrant A8,336,645905,929
Events in quadrant B8,383,042909,434
Events in quadrant C7,676,271892,528
Events in quadrant D7,868,500863,935

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03360
B03360
C03360
D03360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03606428
B03556615
C03443711
D03552114

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A165004692.842424%
B165053161.914571%
C165052061.248107%
D165062631.593360%

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 18619 16509 157 157 0.84% 0.95%
B 18619 16509 60 60 0.32% 0.36%
C 18619 16509 21 21 0.11% 0.13%
D 18619 16509 73 73 0.39% 0.44%

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 50 735767 1873.11 1904 1856 391.8
A 0 118 155600 392.39 1904 1856 391.8
A 8 15 57732 142.61 1904 1856 391.8
B 10 16 380125 1015.5 1927 1881 372.5
B 15 204 239047 636.74 1927 1881 372.5
B 5 172 69437 181.37 1927 1881 372.5
C 9 144 384639 886.29 1856 1863 431.9
C 10 65 24642 52.74 1856 1863 431.9
C 13 61 15606 31.82 1856 1863 431.9
D 13 239 256056 561.29 1855 1798 453.0
D 12 233 134972 293.99 1855 1798 453.0
D 10 172 111337 241.81 1855 1798 453.0

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