ASTROSAT CZTI

Data Quality Report

Orbit 58759

Creation date: 2026-08-07T18:45:20.159700
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_106T01_9000006596_58759cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58759cztM0_level2_quad_clean.evt
Size (bytes)508,406,400103,512,960
Size484.9 MB 98.7 MB
Events in quadrant A3,229,375710,639
Events in quadrant B4,045,616743,298
Events in quadrant C4,434,754644,226
Events in quadrant D6,588,803568,887

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140982
B0164342
C0177412
D0240872

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67071141.699717%
B67072423.608171%
C67073875.770091%
D670790013.418816%

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 7882 6708 9 9 0.11% 0.13%
B 7882 6708 103 103 1.31% 1.54%
C 7882 6708 283 283 3.59% 4.22%
D 7882 6708 733 733 9.30% 10.93%

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 3 254 38323 191.76 793 770 195.8
A 7 64 22385 110.37 793 770 195.8
A 3 245 17878 87.36 793 770 195.8
B 0 171 186698 1141.51 769 743 162.9
B 0 186 182635 1116.57 769 743 162.9
B 5 185 140050 855.16 769 743 162.9
C 15 147 858985 4207.6 745 737 204.0
C 6 223 167745 818.76 745 737 204.0
C 14 96 132762 647.26 745 737 204.0
D 11 129 3135856 15245.28 727 692 205.6
D 2 120 151940 735.47 727 692 205.6
D 12 248 87603 422.62 727 692 205.6

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

TCT plots

Parameter TCT0 TCT_healed
Tct