ASTROSAT CZTI

Data Quality Report

Orbit 16862

Creation date: 2024-06-27T17:28:49.982011
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/AS1T03_034T01_9000002500_16862cztM0_level2.evt modeM0/AS1T03_034T01_9000002500_16862cztM0_level2_quad_clean.evt
Size (bytes)463,936,32079,502,400
Size442.4 MB 75.8 MB
Events in quadrant A2,899,777514,918
Events in quadrant B3,050,822529,232
Events in quadrant C2,948,702505,269
Events in quadrant D4,762,558457,822

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118992
B0123311
C0119891
D0178771

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5716651.137159%
B5716991.731980%
C57161031.801959%
D57165609.797061%

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 6972 5718 0 0 0.00% 0.00%
B 6972 5718 11 11 0.16% 0.19%
C 6972 5718 0 0 0.00% 0.00%
D 6972 5718 479 479 6.87% 8.38%

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 9 143 9935 60.54 751 737 151.9
A 0 226 6981 41.1 751 737 151.9
A 12 194 5620 32.14 751 737 151.9
B 10 16 57282 402.19 742 725 140.6
B 15 35 55002 385.98 742 725 140.6
B 0 197 21753 149.54 742 725 140.6
C 14 238 112442 661.98 720 727 168.8
C 0 207 26508 152.77 720 727 168.8
C 13 61 5250 26.8 720 727 168.8
D 1 52 1925250 11296.86 700 681 170.4
D 13 168 73363 426.63 700 681 170.4
D 10 70 50764 293.98 700 681 170.4

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