ASTROSAT CZTI

Data Quality Report

Orbit 20211028_A11_007T06_9000004746_level2

Creation date: 2021-10-30T15:56:15.019937
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/AS1A11_007T06_9000004746cztM0_level2_bc.evt modeM0/AS1A11_007T06_9000004746cztM0_level2_quad_clean.evt
Size (bytes)893,309,760178,004,160
Size851.9 MB 169.8 MB
Events in quadrant A3,280,2981,126,954
Events in quadrant B4,269,4481,143,347
Events in quadrant C4,082,6191,150,021
Events in quadrant D14,444,088981,312

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02920
B02920
C02920
D02920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0610
B0610
C0610
D0610

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0291670
B0335810
C0316430
D0654920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14323200.139636%
B143233422.387768%
C143231501.047267%
D14323205414.340571%

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 20392 14323 9 9 0.04% 0.06%
B 20392 14321 7 7 0.03% 0.05%
C 20392 14323 19 19 0.09% 0.13%
D 20392 14323 1104 1104 5.41% 7.71%

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 9 143 44344 247.16 814 805 176.2
A 14 63 42712 237.89 814 805 176.2
A 13 254 26037 143.23 814 805 176.2
B 5 172 538083 3347.79 823 808 160.5
B 0 219 99738 616.44 823 808 160.5
B 0 197 97348 601.55 823 808 160.5
C 0 10 362765 1921.51 818 815 188.4
C 14 67 328864 1741.54 818 815 188.4
C 3 233 76814 403.46 818 815 188.4
D 12 227 4682026 24038.35 761 747 194.7
D 8 195 4169352 21405.77 761 747 194.7
D 2 250 881038 4520.29 761 747 194.7

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