ASTROSAT CZTI

Data Quality Report

Orbit 51623

Creation date: 2025-04-15T14:07:51.637968
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_037T05_9000006460_51623cztM0_level2.fits modeM0/AS1A13_037T05_9000006460_51623cztM0_level2_quad_clean.evt
Size (bytes)1,234,385,280220,599,360
Size1.1 GB 210.4 MB
Events in quadrant A10,981,1391,391,336
Events in quadrant B10,070,8431,560,069
Events in quadrant C9,113,8461,398,498
Events in quadrant D14,283,4781,216,783

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0299
B0233
C0255
D0288

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05458811024
B0504679605
C0456607069
D06662813087

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040063
B040767
C039849
D040367

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A160217754.837401%
B162116744.157671%
C162384052.494150%
D1582111467.243537%

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 24120 16565 595 595 2.47% 3.59%
B 24135 16764 399 399 1.65% 2.38%
C 24069 16811 299 299 1.24% 1.78%
D 24117 16349 1079 1079 4.47% 6.60%

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 15 174 1281865 3048.95 1718 1675 419.9
A 12 250 1162571 2764.83 1718 1675 419.9
A 4 175 465462 1104.57 1718 1675 419.9
B 10 41 778017 2109.96 1729 1665 367.9
B 5 185 770991 2090.86 1729 1665 367.9
B 8 128 276979 748.24 1729 1665 367.9
C 15 255 760773 1602.47 1727 1710 473.7
C 14 245 407874 857.46 1727 1710 473.7
C 13 3 289901 608.41 1727 1710 473.7
D 0 18 2737332 6061.24 1629 1574 451.4
D 6 42 1162873 2572.93 1629 1574 451.4
D 1 3 804353 1778.61 1629 1574 451.4

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