ASTROSAT CZTI

Data Quality Report

Orbit 44174

Creation date: 2024-06-27T23:00:05.469634
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_079T01_9000005956_44174cztM0_level2.fits modeM0/AS1A13_079T01_9000005956_44174cztM0_level2_quad_clean.evt
Size (bytes)533,292,480107,112,960
Size508.6 MB 102.2 MB
Events in quadrant A4,712,320732,378
Events in quadrant B3,637,063755,003
Events in quadrant C3,153,301715,659
Events in quadrant D7,697,935554,945

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019394594
B015979429
C014939383
D0291161410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01422
B01431
C01431
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69641021.464675%
B6968861.234214%
C697390.129069%
D6925118617.126354%

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 7567 7012 79 79 1.04% 1.13%
B 7563 7013 57 57 0.75% 0.81%
C 7572 7024 9 9 0.12% 0.13%
D 7576 6985 1134 1134 14.97% 16.23%

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 1165113 7431.72 753 737 156.7
A 15 223 457351 2914.38 753 737 156.7
A 7 3 128554 815.8 753 737 156.7
B 5 172 246958 1664.94 756 733 147.9
B 0 189 122385 822.59 756 733 147.9
B 5 255 108514 728.8 756 733 147.9
C 14 254 144716 814.62 746 750 176.7
C 3 233 35929 199.06 746 750 176.7
C 9 54 23562 129.08 746 750 176.7
D 13 187 2758884 16066.97 678 660 171.7
D 1 52 1022698 5953.49 678 660 171.7
D 12 233 616974 3590.1 678 660 171.7

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