ASTROSAT CZTI

Data Quality Report

Orbit 18677

Creation date: 2024-06-27T17:53:20.640106
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_091T01_9000002790_18677cztM0_level2.evt modeM0/AS1T03_091T01_9000002790_18677cztM0_level2_quad_clean.evt
Size (bytes)638,928,000115,963,200
Size609.3 MB 110.6 MB
Events in quadrant A3,623,743766,616
Events in quadrant B3,965,208780,718
Events in quadrant C3,847,037732,549
Events in quadrant D7,387,196690,903

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160172
B0168572
C0165512
D0274082

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7782550.706759%
B77831521.952974%
C77831592.042914%
D778379710.240267%

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 8392 7784 0 0 0.00% 0.00%
B 8393 7785 26 26 0.31% 0.33%
C 8393 7785 19 19 0.23% 0.24%
D 8393 7785 589 589 7.02% 7.57%

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 13 254 12638 61.53 936 917 190.5
A 0 226 8143 37.93 936 917 190.5
A 3 137 7625 35.21 936 917 190.5
B 0 197 90560 494.94 939 917 181.1
B 7 220 77687 423.86 939 917 181.1
B 4 80 48824 264.5 939 917 181.1
C 3 233 171271 813.09 892 900 209.5
C 14 238 140283 665.2 892 900 209.5
C 9 54 52510 246.3 892 900 209.5
D 1 52 3468483 16113.25 880 854 215.2
D 7 238 294155 1362.9 880 854 215.2
D 12 110 255030 1181.1 880 854 215.2

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