ASTROSAT CZTI

Data Quality Report

Orbit 21600

Creation date: 2024-06-27T18:30:03.812237
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_094T01_9000003204_21600cztM0_level2.evt modeM0/AS1A05_094T01_9000003204_21600cztM0_level2_quad_clean.evt
Size (bytes)472,855,68094,576,320
Size451.0 MB 90.2 MB
Events in quadrant A3,288,087603,710
Events in quadrant B3,492,188610,678
Events in quadrant C3,307,525591,521
Events in quadrant D3,755,988569,549

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143941
B0148551
C0143951
D0159442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70111792.553131%
B70122153.066172%
C70122113.009127%
D70112723.879618%

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 7171 7013 0 0 0.00% 0.00%
B 7171 7013 12 12 0.17% 0.17%
C 7171 7013 0 0 0.00% 0.00%
D 7170 7011 85 85 1.19% 1.21%

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 8729 45.7 852 833 172.8
A 0 226 7545 38.85 852 833 172.8
A 3 137 7321 37.55 852 833 172.8
B 0 228 82039 499.31 846 825 162.7
B 3 64 52847 319.83 846 825 162.7
B 12 111 19733 116.25 846 825 162.7
C 14 238 127987 664.22 815 819 191.5
C 13 61 5617 25.06 815 819 191.5
C 4 175 2328 7.88 815 819 191.5
D 1 52 484185 2424.52 816 790 199.4
D 2 136 113250 564.05 816 790 199.4
D 14 35 40461 198.97 816 790 199.4

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