ASTROSAT CZTI

Data Quality Report

Orbit 57107

Creation date: 2026-04-18T16:17:00.039469
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_083T10_9000006566_57107cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57107cztM0_level2_quad_clean.evt
Size (bytes)488,773,440103,858,560
Size466.1 MB 99.0 MB
Events in quadrant A3,190,067684,485
Events in quadrant B3,824,644735,562
Events in quadrant C3,587,540657,301
Events in quadrant D6,933,654568,227

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147960
B0162890
C0157720
D0254940

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7167290.404632%
B7168981.367188%
C7168801.116071%
D716874710.421317%

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 7167 7167 15 15 0.21% 0.21%
B 7168 7168 60 60 0.84% 0.84%
C 7168 7168 61 61 0.85% 0.85%
D 7168 7168 658 658 9.18% 9.18%

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 10 251 94513 483.91 781 761 193.7
A 13 248 29777 149.77 781 761 193.7
A 3 14 27950 140.34 781 761 193.7
B 8 128 360246 2155.17 769 740 166.8
B 10 16 197856 1181.67 769 740 166.8
B 4 171 80556 478.48 769 740 166.8
C 14 245 210535 1017.3 759 751 206.2
C 12 252 194962 941.78 759 751 206.2
C 14 254 50510 241.29 759 751 206.2
D 15 142 3416521 16868.42 725 694 202.5
D 12 251 149065 732.7 725 694 202.5
D 12 33 140975 692.75 725 694 202.5

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