ASTROSAT CZTI

Data Quality Report

Orbit 01039

Creation date: 2024-06-27T14:06:32.926987
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/AS1P01_998T02_9000000190_01039cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01039cztM0_level2_quad_clean.evt
Size (bytes)984,015,360109,658,880
Size938.4 MB 104.6 MB
Events in quadrant A7,408,029729,390
Events in quadrant B7,847,105738,053
Events in quadrant C7,505,283708,685
Events in quadrant D6,615,627698,920

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265371
B0278723
C0268541
D0242471

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6395150.234558%
B6395200.312744%
C6395140.218921%
D6395130.203284%

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 7460 6396 147 147 1.97% 2.30%
B 7460 6396 189 189 2.53% 2.95%
C 7460 6396 180 180 2.41% 2.81%
D 7460 6396 85 85 1.14% 1.33%

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 11 79 8489 14.1 1928 1939 464.4
A 3 111 6074 8.9 1928 1939 464.4
A 12 243 5769 8.25 1928 1939 464.4
B 8 234 69848 143.63 2008 2015 472.3
B 5 249 39079 78.48 2008 2015 472.3
B 15 22 37914 76.02 2008 2015 472.3
C 15 241 390428 777.68 1791 1851 499.7
C 8 208 38738 73.82 1791 1851 499.7
C 5 234 30885 58.11 1791 1851 499.7
D 5 80 46832 83.77 1738 1799 537.6
D 13 169 22142 37.84 1738 1799 537.6
D 10 199 18772 31.57 1738 1799 537.6

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