ASTROSAT CZTI

Data Quality Report

Orbit 53962

Creation date: 2025-09-19T12:06:13.588552
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_057T04_9000006508_53962cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53962cztM0_level2_quad_clean.evt
Size (bytes)3,073,348,800383,256,000
Size2.9 GB 365.5 MB
Events in quadrant A18,083,8172,810,704
Events in quadrant B17,552,9692,973,337
Events in quadrant C25,282,4722,417,842
Events in quadrant D50,534,1291,341,182

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07411033
B07302431
C09641925
D0170949153

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06060
B06060
C06060
D06060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2996211923.978373%
B2996110093.367711%
C29967381412.727333%
D299501447648.333890%

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 37661 29978 705 705 1.87% 2.35%
B 37662 29980 360 360 0.96% 1.20%
C 37662 29980 3250 3250 8.63% 10.84%
D 37662 29972 11338 11338 30.10% 37.83%

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 0 8 1515927 1899.72 3233 3153 796.3
A 15 174 1399441 1753.44 3233 3153 796.3
A 4 249 539660 673.74 3233 3153 796.3
B 0 213 1363752 2017.76 3193 3081 674.3
B 0 155 678857 1002.12 3193 3081 674.3
B 5 250 571385 842.75 3193 3081 674.3
C 1 241 7870328 9662.45 2965 2941 814.2
C 9 38 2214629 2716.32 2965 2941 814.2
C 13 3 1036923 1269.9 2965 2941 814.2
D 8 176 27209279 41572.21 2275 2174 654.5
D 6 239 3448291 5265.64 2275 2174 654.5
D 3 12 3082368 4706.51 2275 2174 654.5

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