ASTROSAT CZTI

Data Quality Report

Orbit 11581

Creation date: 2024-06-27T16:15:26.527034
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/AS1A04_137T01_9000001700_11581cztM0_level2.evt modeM0/AS1A04_137T01_9000001700_11581cztM0_level2_quad_clean.evt
Size (bytes)609,128,64099,492,480
Size580.9 MB 94.9 MB
Events in quadrant A5,549,589625,622
Events in quadrant B4,789,319636,902
Events in quadrant C3,215,978658,660
Events in quadrant D4,436,349622,087

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210273
B0184872
C0139792
D0175312

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A672872510.775862%
B67285418.041023%
C67281291.917360%
D67283324.934602%

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 8939 6730 326 326 3.65% 4.84%
B 8939 6730 220 220 2.46% 3.27%
C 8939 6730 0 0 0.00% 0.00%
D 8939 6730 156 156 1.75% 2.32%

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 8 5 2089368 12314.56 832 816 169.6
A 9 143 85269 497.95 832 816 169.6
A 1 162 50966 295.7 832 816 169.6
B 4 239 1217614 7549.96 833 814 161.2
B 11 51 107349 661.02 833 814 161.2
B 15 204 99178 610.33 833 814 161.2
C 13 61 6062 27.57 823 829 189.8
C 12 4 4579 19.75 823 829 189.8
C 14 67 2843 10.61 823 829 189.8
D 1 52 406985 2043.64 823 801 198.8
D 2 120 401007 2013.56 823 801 198.8
D 10 253 213943 1072.38 823 801 198.8

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