ASTROSAT CZTI

Data Quality Report

Orbit 25101

Creation date: 2024-06-27T19:13:50.548589
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/AS1T03_206T01_9000003672_25101cztM0_level2.evt modeM0/AS1T03_206T01_9000003672_25101cztM0_level2_quad_clean.evt
Size (bytes)492,707,52076,979,520
Size469.9 MB 73.4 MB
Events in quadrant A3,183,423486,976
Events in quadrant B3,359,013500,782
Events in quadrant C3,384,694462,281
Events in quadrant D4,561,069435,073

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132540
B0137660
C0138820
D0177580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6382230.360389%
B6382550.861799%
C6382801.253526%
D63822894.528361%

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 7552 6383 0 0 0.00% 0.00%
B 7552 6383 5 5 0.07% 0.08%
C 7552 6383 0 0 0.00% 0.00%
D 7552 6383 213 213 2.82% 3.34%

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 11175 62.69 822 804 165.4
A 3 137 7160 38.42 822 804 165.4
A 0 226 7109 38.11 822 804 165.4
B 0 189 43870 277.82 826 808 155.0
B 0 229 39891 252.15 826 808 155.0
B 5 172 26355 164.82 826 808 155.0
C 0 239 132128 717.21 781 788 183.1
C 14 238 126339 685.6 781 788 183.1
C 7 247 52558 282.7 781 788 183.1
D 1 52 489246 2605.05 765 743 187.5
D 7 223 325968 1734.33 765 743 187.5
D 12 233 219100 1164.44 765 743 187.5

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