ASTROSAT CZTI

Data Quality Report

Orbit 44372

Creation date: 2024-06-27T23:02:48.448596
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_008T05_9000005996_44372cztM0_level2.fits modeM0/AS1A13_008T05_9000005996_44372cztM0_level2_quad_clean.evt
Size (bytes)490,944,960102,153,600
Size468.2 MB 97.4 MB
Events in quadrant A7,446,178602,551
Events in quadrant B3,269,372737,014
Events in quadrant C3,042,826700,874
Events in quadrant D3,950,492635,018

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265861
B0135191
C0129991
D0156041

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5978128821.545667%
B59781402.341920%
C5979751.254390%
D59792393.997324%

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 7152 5977 1024 1024 14.32% 17.13%
B 7153 5978 35 35 0.49% 0.59%
C 7154 5979 27 27 0.38% 0.45%
D 7154 5979 164 164 2.29% 2.74%

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 15 223 2419441 17591.84 666 654 137.5
A 10 83 1496539 10879.57 666 654 137.5
A 13 248 912610 6632.66 666 654 137.5
B 5 255 101493 699.16 724 703 144.2
B 15 36 87749 603.82 724 703 144.2
B 7 221 57572 394.49 724 703 144.2
C 14 254 187038 1135.83 700 704 164.1
C 14 96 58623 353.05 700 704 164.1
C 2 14 24476 144.91 700 704 164.1
D 13 249 371996 2106.62 700 680 176.3
D 1 52 156261 882.67 700 680 176.3
D 7 55 121826 687.31 700 680 176.3

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