ASTROSAT CZTI

Data Quality Report

Orbit 44576

Creation date: 2024-06-27T23:04:08.583843
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_003T01_9000006002_44576cztM0_level2.fits modeM0/AS1A13_003T01_9000006002_44576cztM0_level2_quad_clean.evt
Size (bytes)460,203,840114,278,400
Size438.9 MB 109.0 MB
Events in quadrant A4,954,982773,858
Events in quadrant B3,604,123797,665
Events in quadrant C3,314,911769,686
Events in quadrant D4,663,548672,623

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201792
B0148172
C0141252
D0182252

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64081862.902622%
B64082333.636080%
C6408921.435705%
D64084607.178527%

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 7638 6408 11 11 0.14% 0.17%
B 7638 6408 109 109 1.43% 1.70%
C 7638 6409 24 24 0.31% 0.37%
D 7638 6408 370 370 4.84% 5.77%

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 1883691 11614.62 782 767 162.1
A 13 248 40621 245.84 782 767 162.1
A 3 137 8395 47.05 782 767 162.1
B 5 172 420919 2777.46 778 753 151.3
B 5 255 57116 372.58 778 753 151.3
B 4 171 26929 173.03 778 753 151.3
C 14 254 147167 825.59 762 769 177.3
C 3 233 63464 353.56 762 769 177.3
C 15 208 55073 306.24 762 769 177.3
D 13 249 1098916 6024.01 737 717 182.3
D 1 52 434168 2377.63 737 717 182.3
D 13 174 152041 830.06 737 717 182.3

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