ASTROSAT CZTI

Data Quality Report

Orbit 47862

Creation date: 2024-08-04T04:06:10.258417
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/AS1A09_038T16_9000006364_47862cztM0_level2.fits modeM0/AS1A09_038T16_9000006364_47862cztM0_level2_quad_clean.evt
Size (bytes)189,489,60026,815,680
Size180.7 MB 25.6 MB
Events in quadrant A2,028,169186,523
Events in quadrant B864,841198,995
Events in quadrant C783,866194,391
Events in quadrant D3,191,92997,195

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A072491
B038781
C037891
D0107661

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18431317.107976%
B184380.434075%
C184390.488334%
D184384545.849159%

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 1843 1843 41 41 2.22% 2.22%
B 1843 1843 0 0 0.00% 0.00%
C 1842 1842 3 3 0.16% 0.16%
D 1843 1843 882 882 47.86% 47.86%

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 10 83 1262972 30205.5 193 189 41.8
A 7 3 9750 228.7 193 189 41.8
A 10 255 7085 164.95 193 189 41.8
B 0 183 39777 964.05 198 192 41.1
B 4 21 28814 697.06 198 192 41.1
B 0 198 6703 158.57 198 192 41.1
C 12 2 33954 726.21 190 191 46.5
C 14 254 2551 50.76 190 191 46.5
C 0 207 1843 35.53 190 191 46.5
D 2 37 1954325 51795.62 140 135 37.7
D 2 165 365086 9672.99 140 135 37.7
D 12 2 174451 4620.23 140 135 37.7

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