ASTROSAT CZTI

Data Quality Report

Orbit 18243

Creation date: 2024-06-27T17:47:18.922658
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_019T01_9000002718_18243cztM0_level2.evt modeM0/AS1A05_019T01_9000002718_18243cztM0_level2_quad_clean.evt
Size (bytes)486,506,88095,595,840
Size464.0 MB 91.2 MB
Events in quadrant A3,800,182610,600
Events in quadrant B3,410,862621,149
Events in quadrant C3,272,720586,980
Events in quadrant D3,768,993582,948

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160511
B0147811
C0145011
D0159931

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70821772.499294%
B7082520.734256%
C7082751.059023%
D70821021.440271%

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 7357 7083 117 117 1.59% 1.65%
B 7357 7083 3 3 0.04% 0.04%
C 7357 7083 0 0 0.00% 0.00%
D 7357 7083 53 53 0.72% 0.75%

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 15 174 566915 3315.05 838 818 170.8
A 3 1 7746 40.57 838 818 170.8
A 0 226 7342 38.2 838 818 170.8
B 7 220 51693 311.99 838 816 163.1
B 3 64 23962 141.94 838 816 163.1
B 4 171 21268 125.41 838 816 163.1
C 14 238 123737 649.8 804 808 189.2
C 13 61 5694 25.83 804 808 189.2
C 4 223 5672 25.71 804 808 189.2
D 1 52 276442 1375.09 821 797 200.5
D 7 238 151175 750.18 821 797 200.5
D 10 70 133390 661.46 821 797 200.5

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