ASTROSAT CZTI

Data Quality Report

Orbit 43793

Creation date: 2024-06-27T22:55:50.200436
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/AS1A13_018T01_9000005906_43793cztM0_level2.fits modeM0/AS1A13_018T01_9000005906_43793cztM0_level2_quad_clean.evt
Size (bytes)661,268,160114,739,200
Size630.6 MB 109.4 MB
Events in quadrant A5,123,196801,882
Events in quadrant B3,869,796856,240
Events in quadrant C6,685,956752,002
Events in quadrant D8,300,482614,989

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202212
B0156882
C0240552
D0291962

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64444316.688392%
B64432073.212789%
C644391414.185938%
D6443147722.924104%

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 7649 6445 134 134 1.75% 2.08%
B 7648 6445 22 22 0.29% 0.34%
C 7648 6445 945 945 12.36% 14.66%
D 7648 6444 1193 1193 15.60% 18.51%

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 1003296 5975.74 823 807 167.8
A 15 223 728694 4338.86 823 807 167.8
A 15 174 100857 596.39 823 807 167.8
B 0 200 227013 1413.14 826 805 160.1
B 7 205 88813 549.79 826 805 160.1
B 0 183 75568 467.05 826 805 160.1
C 15 174 2763911 15111.8 787 793 182.8
C 15 158 376711 2055.94 787 793 182.8
C 15 157 133807 727.47 787 793 182.8
D 12 33 3403137 17945.81 753 729 189.6
D 5 222 393940 2073.97 753 729 189.6
D 1 52 345001 1815.84 753 729 189.6

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