ASTROSAT CZTI

Data Quality Report

Orbit 15781

Creation date: 2024-06-27T17:13:20.432576
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/AS1A04_100T01_9000002336_15781cztM0_level2.evt modeM0/AS1A04_100T01_9000002336_15781cztM0_level2_quad_clean.evt
Size (bytes)456,315,84095,330,880
Size435.2 MB 90.9 MB
Events in quadrant A3,265,966595,137
Events in quadrant B3,400,149612,412
Events in quadrant C3,299,093603,714
Events in quadrant D3,377,276587,033

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146053
B0148102
C0145332
D0150802

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70112593.694195%
B70112503.565825%
C70112383.394666%
D70112493.551562%

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 7062 7014 1 1 0.01% 0.01%
B 7062 7014 7 7 0.10% 0.10%
C 7062 7014 0 0 0.00% 0.00%
D 7062 7014 39 39 0.55% 0.56%

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 15 239 30212 169.96 837 816 173.0
A 15 157 10916 58.4 837 816 173.0
A 0 226 7574 39.07 837 816 173.0
B 3 209 55286 333.58 836 811 163.3
B 4 216 36561 218.92 836 811 163.3
B 12 111 18904 110.79 836 811 163.3
C 14 238 123703 650.41 802 807 189.0
C 8 128 11474 56.45 802 807 189.0
C 10 22 8934 43.01 802 807 189.0
D 5 51 147335 734.03 816 791 199.6
D 1 52 45678 224.84 816 791 199.6
D 2 14 39267 192.72 816 791 199.6

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