ASTROSAT CZTI

Data Quality Report

Orbit 18675

Creation date: 2024-06-27T17:53:18.906548
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_18675cztM0_level2.evt modeM0/AS1T03_091T01_9000002790_18675cztM0_level2_quad_clean.evt
Size (bytes)479,759,040102,104,640
Size457.5 MB 97.4 MB
Events in quadrant A3,231,905668,599
Events in quadrant B3,644,578678,942
Events in quadrant C3,583,373641,984
Events in quadrant D3,602,379623,222

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141592
B0152672
C0151872
D0154582

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6880260.377907%
B6880841.220930%
C6880921.337209%
D6880490.712209%

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 7610 6881 0 0 0.00% 0.00%
B 7610 6881 28 28 0.37% 0.41%
C 7610 6881 12 12 0.16% 0.17%
D 7610 6881 65 65 0.85% 0.94%

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 10997 60.14 834 816 169.3
A 11 29 8468 45.2 834 816 169.3
A 0 226 7197 37.69 834 816 169.3
B 4 80 82209 512.89 836 816 158.7
B 0 244 68478 426.36 836 816 158.7
B 7 220 63487 394.91 836 816 158.7
C 9 54 240407 1295.39 793 799 185.0
C 3 233 130099 699.04 793 799 185.0
C 14 238 124401 668.23 793 799 185.0
D 1 52 471167 2394.82 799 776 196.4
D 7 238 36586 182.31 799 776 196.4
D 7 96 35085 174.67 799 776 196.4

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