ASTROSAT CZTI

Data Quality Report

Orbit 16245

Creation date: 2024-06-27T17:19:52.997248
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/AS1T02_112T01_9000002390_16245cztM0_level2.evt modeM0/AS1T02_112T01_9000002390_16245cztM0_level2_quad_clean.evt
Size (bytes)538,171,200105,122,880
Size513.2 MB 100.3 MB
Events in quadrant A3,962,904672,027
Events in quadrant B4,510,768668,927
Events in quadrant C3,626,199672,675
Events in quadrant D3,699,384657,793

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165942
B0181731
C0153581
D0159991

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73551932.624065%
B73552453.331067%
C7355590.802175%
D7355600.815772%

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 7581 7357 94 94 1.24% 1.28%
B 7581 7357 109 109 1.44% 1.48%
C 7581 7357 0 0 0.00% 0.00%
D 7581 7357 31 31 0.41% 0.42%

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 535228 2949.45 885 867 181.2
A 9 143 18539 97.54 885 867 181.2
A 0 226 7783 38.17 885 867 181.2
B 3 64 412796 2407.88 884 862 171.1
B 7 220 327651 1910.18 884 862 171.1
B 0 198 47184 270.77 884 862 171.1
C 3 233 162353 805.58 852 856 200.5
C 14 238 129566 642.03 852 856 200.5
C 0 207 7006 30.68 852 856 200.5
D 7 38 117057 538.44 864 841 215.8
D 1 52 116688 536.73 864 841 215.8
D 15 0 75482 345.82 864 841 215.8

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