ASTROSAT CZTI

Data Quality Report

Orbit 54325

Creation date: 2025-10-13T10:36:49.708670
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/AS1A14_126T15_9000006516_54325cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54325cztM0_level2_quad_clean.evt
Size (bytes)605,986,56090,587,520
Size577.9 MB 86.4 MB
Events in quadrant A3,182,579638,708
Events in quadrant B3,126,083686,624
Events in quadrant C5,337,683590,745
Events in quadrant D10,266,795361,202

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145112
B0141262
C0209742
D0350972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66751031.543071%
B6675520.779026%
C66754897.325843%
D6675269740.404494%

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 7705 6676 67 67 0.87% 1.00%
B 7705 6676 16 16 0.21% 0.24%
C 7705 6676 465 465 6.04% 6.97%
D 7705 6676 2544 2544 33.02% 38.11%

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 7 29 232908 1349.54 698 681 172.1
A 0 8 142434 823.77 698 681 172.1
A 4 3 20986 118.0 698 681 172.1
B 0 171 121117 811.93 697 671 148.3
B 7 0 76225 509.31 697 671 148.3
B 10 245 52752 351.08 697 671 148.3
C 1 16 1838480 10029.06 665 658 183.2
C 1 241 412795 2249.04 665 658 183.2
C 14 254 193249 1050.97 665 658 183.2
D 8 176 5062527 32692.22 542 517 154.8
D 2 172 1468751 9482.37 542 517 154.8
D 3 12 1240500 8008.24 542 517 154.8

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