ASTROSAT CZTI

Data Quality Report

Orbit 44535

Creation date: 2024-06-27T23:03:53.881378
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_44535cztM0_level2.fits modeM0/AS1A13_003T01_9000006002_44535cztM0_level2_quad_clean.evt
Size (bytes)485,210,880111,159,360
Size462.7 MB 106.0 MB
Events in quadrant A5,534,938727,124
Events in quadrant B3,967,059749,279
Events in quadrant C3,549,244741,521
Events in quadrant D4,372,259666,099

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225031
B0165721
C0152421
D0177181

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69144476.465143%
B69143895.626266%
C69141151.663292%
D69153224.656544%

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 7344 6915 145 145 1.97% 2.10%
B 7344 6916 135 135 1.84% 1.95%
C 7344 6915 25 25 0.34% 0.36%
D 7345 6916 176 176 2.40% 2.54%

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 1715850 10549.49 778 760 162.6
A 13 248 706364 4340.16 778 760 162.6
A 10 248 66154 402.24 778 760 162.6
B 5 235 679290 4369.9 779 755 155.3
B 5 172 56312 357.8 779 755 155.3
B 0 168 55806 354.54 779 755 155.3
C 14 254 306890 1672.87 772 776 183.0
C 3 233 103181 559.63 772 776 183.0
C 2 14 69475 375.43 772 776 183.0
D 1 52 799193 4153.25 770 744 192.2
D 2 249 400168 2077.66 770 744 192.2
D 13 153 62226 319.81 770 744 192.2

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