ASTROSAT CZTI

Data Quality Report

Orbit 31472

Creation date: 2024-06-27T20:28:57.849170
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/AS1T04_029T01_9000004582_31472cztM0_level2.evt modeM0/AS1T04_029T01_9000004582_31472cztM0_level2_quad_clean.evt
Size (bytes)609,425,28074,931,840
Size581.2 MB 71.5 MB
Events in quadrant A3,549,262463,409
Events in quadrant B5,619,558463,545
Events in quadrant C3,975,966444,694
Events in quadrant D4,830,704402,380

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148742
B0216612
C0160612
D0190402

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71071892.659350%
B71083144.417558%
C71083685.177265%
D71085517.751829%

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 8767 7108 0 0 0.00% 0.00%
B 8768 7108 2 2 0.02% 0.03%
C 8768 7108 90 90 1.03% 1.27%
D 8768 7109 420 420 4.79% 5.91%

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 12465 62.55 919 900 184.9
A 3 137 9953 48.96 919 900 184.9
A 0 226 7681 36.67 919 900 184.9
B 6 159 2044831 11661.75 899 877 175.3
B 12 111 22637 124.15 899 877 175.3
B 11 111 20895 114.21 899 877 175.3
C 0 10 290686 1407.7 862 867 205.9
C 10 22 148346 716.33 862 867 205.9
C 14 238 139741 674.53 862 867 205.9
D 12 218 1129896 5523.7 854 833 204.4
D 8 195 438052 2139.0 854 833 204.4
D 2 234 24760 117.06 854 833 204.4

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