ASTROSAT CZTI

Data Quality Report

Orbit 44848

Creation date: 2024-06-27T23:07:10.026491
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_017T01_9000006028_44848cztM0_level2.fits modeM0/AS1A13_017T01_9000006028_44848cztM0_level2_quad_clean.evt
Size (bytes)457,295,040111,720,960
Size436.1 MB 106.5 MB
Events in quadrant A5,443,048744,769
Events in quadrant B3,321,131777,129
Events in quadrant C3,158,069731,992
Events in quadrant D4,484,409660,970

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216381
B0143421
C0140921
D0179161

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67082433.622540%
B67071001.490980%
C6708771.147883%
D67082493.711986%

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 7758 6709 75 75 0.97% 1.12%
B 7757 6708 19 19 0.24% 0.28%
C 7758 6709 22 22 0.28% 0.33%
D 7758 6709 186 186 2.40% 2.77%

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 2151573 13554.74 768 752 158.7
A 13 248 325208 2044.76 768 752 158.7
A 3 137 8749 50.4 768 752 158.7
B 0 186 70686 461.09 769 745 151.7
B 5 255 57851 376.47 769 745 151.7
B 0 219 44821 290.57 769 745 151.7
C 14 254 78069 435.62 756 760 177.5
C 12 2 63086 351.2 756 760 177.5
C 1 3 23070 125.71 756 760 177.5
D 5 235 505595 2656.93 753 730 190.0
D 13 174 272618 1430.85 753 730 190.0
D 7 38 194559 1020.05 753 730 190.0

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