ASTROSAT CZTI

Data Quality Report

Orbit 59419

Creation date: 2026-09-21T05:14:40.784665
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_033T01_9000006608_59419cztM0_level2.fits modeM0/AS1A14_033T01_9000006608_59419cztM0_level2_quad_clean.evt
Size (bytes)603,527,040115,784,640
Size575.6 MB 110.4 MB
Events in quadrant A4,907,717747,755
Events in quadrant B5,701,045803,575
Events in quadrant C5,264,596732,291
Events in quadrant D5,842,683662,853

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205411
B0225170
C0215510
D0231567

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80483314.112823%
B80505847.254658%
C80504045.018634%
D80494876.050441%

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 8049 8049 230 230 2.86% 2.86%
B 8050 8050 444 444 5.52% 5.52%
C 8050 8050 251 251 3.12% 3.12%
D 8050 8050 317 317 3.94% 3.94%

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 14 238 695726 3168.19 886 863 219.3
A 0 117 442538 2013.79 886 863 219.3
A 3 14 227769 1034.56 886 863 219.3
B 4 236 1443712 7573.66 881 848 190.5
B 5 185 380503 1992.83 881 848 190.5
B 0 157 173434 905.91 881 848 190.5
C 2 12 1388344 5804.38 874 867 239.0
C 12 112 143404 596.29 874 867 239.0
C 4 5 118513 492.16 874 867 239.0
D 12 110 1154980 4797.61 853 818 240.6
D 6 239 982401 4080.23 853 818 240.6
D 2 120 127282 525.68 853 818 240.6

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