ASTROSAT CZTI

Data Quality Report

Orbit 17806

Creation date: 2024-06-27T17:41:07.922938
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/AS1A05_015T01_9000002650_17806cztM0_level2.evt modeM0/AS1A05_015T01_9000002650_17806cztM0_level2_quad_clean.evt
Size (bytes)493,701,12097,295,040
Size470.8 MB 92.8 MB
Events in quadrant A3,221,591622,430
Events in quadrant B3,314,930638,622
Events in quadrant C3,386,435610,629
Events in quadrant D4,551,188585,102

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143462
B0145202
C0145312
D0186192

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7032280.398180%
B7032400.568828%
C7032680.967008%
D70324005.688282%

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 7907 7033 0 0 0.00% 0.00%
B 7907 7033 0 0 0.00% 0.00%
C 7907 7033 0 0 0.00% 0.00%
D 7907 7033 296 296 3.74% 4.21%

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 15 174 13381 74.88 833 816 167.8
A 0 226 7206 38.08 833 816 167.8
A 13 210 6263 32.46 833 816 167.8
B 0 230 23048 139.29 836 815 159.6
B 12 111 18984 113.83 836 815 159.6
B 11 111 16498 98.25 836 815 159.6
C 14 238 123833 658.7 798 803 186.8
C 3 233 100651 534.58 798 803 186.8
C 5 218 39067 204.86 798 803 186.8
D 7 238 1497746 7992.57 784 769 187.3
D 2 234 26314 136.39 784 769 187.3
D 10 70 24769 128.14 784 769 187.3

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