ASTROSAT CZTI

Data Quality Report

Orbit 20160528_G05_234T02_9000000474_level2

Creation date: 2025-10-30T15:41:02.238665
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/AS1G05_234T02_9000000474cztM0_level2.fits modeM0/AS1G05_234T02_9000000474cztM0_level2_quad_clean.evt
Size (bytes)89,565,120103,896,000
Size85.4 MB 99.1 MB
Events in quadrant A547,334659,152
Events in quadrant B517,412635,646
Events in quadrant C529,234620,487
Events in quadrant D466,156578,330

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01900
B01900
C01900
D01900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204850
B0231420
C0191420
D0198910

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A94101491.583422%
B94102542.699256%
C9410680.722635%
D94111011.073212%

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 10590 9410 0 0 0.00% 0.00%
B 10590 9410 0 0 0.00% 0.00%
C 10590 9410 0 0 0.00% 0.00%
D 10590 9410 0 0 0.00% 0.00%

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 0 29 523 10.15 142 134 38.3
A 14 188 522 10.12 142 134 38.3
A 14 204 480 9.03 142 134 38.3
B 2 9 413 9.4 137 131 30.0
B 12 226 405 9.13 137 131 30.0
B 5 128 363 7.73 137 131 30.0
C 1 81 400 6.97 139 130 38.8
C 1 80 396 6.86 139 130 38.8
C 9 188 373 6.27 139 130 38.8
D 11 82 398 7.44 133 121 37.2
D 3 14 363 6.5 133 121 37.2
D 7 5 329 5.59 133 121 37.2

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