ASTROSAT CZTI

Data Quality Report

Orbit 20220822_A10_094T24_9000005306_level2

Creation date: 2022-08-25T14:14:45.297848
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/AS1A10_094T24_9000005306cztM0_level2_bc.evt modeM0/AS1A10_094T24_9000005306cztM0_level2_quad_clean.evt
Size (bytes)156,081,60065,574,720
Size148.9 MB 62.5 MB
Events in quadrant A989,577427,776
Events in quadrant B949,094435,765
Events in quadrant C1,027,166438,060
Events in quadrant D1,491,480412,551

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A081710
B081790
C081780
D0106430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3839210.547017%
B3839150.390727%
C3839431.120083%
D38392125.522271%

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 3839 3839 2 2 0.05% 0.05%
B 3838 3838 0 0 0.00% 0.00%
C 3838 3838 6 6 0.16% 0.16%
D 3839 3839 9 9 0.23% 0.23%

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 10 83 167071 3745.4 191 188 44.6
A 13 248 33354 744.35 191 188 44.6
A 9 143 32444 723.93 191 188 44.6
B 0 213 78680 1955.24 193 189 40.1
B 5 255 51915 1288.51 193 189 40.1
B 12 18 21859 539.81 193 189 40.1
C 15 214 153616 3269.99 191 190 46.9
C 0 10 82492 1754.11 191 190 46.9
C 14 254 37408 793.23 191 190 46.9
D 2 249 330500 6897.19 191 184 47.9
D 12 233 84136 1752.97 191 184 47.9
D 10 199 79943 1665.41 191 184 47.9

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