ASTROSAT CZTI

Data Quality Report

Orbit 50585

Creation date: 2025-02-03T16:07:17.761520
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/AS1T05_239T01_9000006444_50585cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50585cztM0_level2_quad_clean.evt
Size (bytes)822,559,68098,121,600
Size784.5 MB 93.6 MB
Events in quadrant A4,584,001671,907
Events in quadrant B4,891,742724,035
Events in quadrant C10,753,338488,628
Events in quadrant D9,639,398563,084

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187920
B0195640
C0370790
D0339656

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75111762.343230%
B75112683.568100%
C7511230030.621755%
D751192712.341899%

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 7511 7511 96 96 1.28% 1.28%
B 7511 7511 190 190 2.53% 2.53%
C 7511 7511 2014 2014 26.81% 26.81%
D 7511 7511 975 975 12.98% 12.98%

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 12 250 704884 3706.73 763 744 190.0
A 4 3 183705 963.14 763 744 190.0
A 10 253 134288 703.0 763 744 190.0
B 4 170 899711 5583.88 754 728 161.0
B 7 0 325570 2017.7 754 728 161.0
B 0 229 166792 1031.48 754 728 161.0
C 15 157 2571922 14030.06 663 660 183.3
C 15 174 1670796 9113.08 663 660 183.3
C 15 196 1174249 6403.67 663 660 183.3
D 7 61 3201650 16382.04 701 678 195.4
D 2 165 834474 4267.23 701 678 195.4
D 7 60 596994 3051.85 701 678 195.4

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