ASTROSAT CZTI

Data Quality Report

Orbit 45303

Creation date: 2024-06-27T23:12:08.858512
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_073T04_9000006066_45303cztM0_level2.fits modeM0/AS1A13_073T04_9000006066_45303cztM0_level2_quad_clean.evt
Size (bytes)506,649,600110,643,840
Size483.2 MB 105.5 MB
Events in quadrant A5,548,336731,235
Events in quadrant B3,194,193765,715
Events in quadrant C3,166,305748,716
Events in quadrant D6,313,052626,764

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02143712
B0143443
C0145059
D0234859

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68612193.191955%
B68631492.171062%
C6862680.990965%
D686275711.031769%

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 7489 6864 19 19 0.25% 0.28%
B 7489 6864 18 18 0.24% 0.26%
C 7490 6868 11 11 0.15% 0.16%
D 7490 6865 648 648 8.65% 9.44%

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 2454366 15572.04 757 741 157.6
A 10 248 153795 971.36 757 741 157.6
A 0 243 8872 51.6 757 741 157.6
B 5 32 75139 495.89 762 738 150.0
B 5 255 68199 449.63 762 738 150.0
B 12 111 19211 123.12 762 738 150.0
C 14 254 170057 962.03 751 755 176.0
C 3 233 46181 258.12 751 755 176.0
C 1 3 11742 62.43 751 755 176.0
D 2 249 1761630 9927.83 712 692 177.4
D 11 241 1317509 7423.96 712 692 177.4
D 1 52 250511 1408.43 712 692 177.4

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