ASTROSAT CZTI

Data Quality Report

Orbit 18479

Creation date: 2024-06-27T17:50:34.702051
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_082T12_9000002738_18479cztM0_level2.evt modeM0/AS1A05_082T12_9000002738_18479cztM0_level2_quad_clean.evt
Size (bytes)507,476,16072,403,200
Size484.0 MB 69.0 MB
Events in quadrant A3,304,126435,045
Events in quadrant B4,248,200441,918
Events in quadrant C3,513,086431,961
Events in quadrant D3,858,641426,096

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141212
B0170042
C0148962
D0160512

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6562440.670527%
B65623144.785126%
C6561991.508916%
D65611101.676574%

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 7617 6562 1 1 0.01% 0.02%
B 7617 6562 182 182 2.39% 2.77%
C 7616 6561 0 0 0.00% 0.00%
D 7616 6561 46 46 0.60% 0.70%

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 4 2 46876 273.6 833 815 168.3
A 15 174 28034 161.68 833 815 168.3
A 0 13 20835 118.92 833 815 168.3
B 10 245 975683 6157.99 820 799 158.3
B 0 228 21554 131.1 820 799 158.3
B 12 111 18359 110.92 820 799 158.3
C 3 233 248965 1325.6 805 811 187.2
C 14 238 124200 659.12 805 811 187.2
C 13 61 5702 26.13 805 811 187.2
D 1 52 203286 1007.81 817 793 200.9
D 10 66 170880 846.52 817 793 200.9
D 7 38 133977 662.86 817 793 200.9

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