ASTROSAT CZTI

Data Quality Report

Orbit 53989

Creation date: 2025-09-22T17:54:32.832326
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_041T01_9000006510_53989cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_53989cztM0_level2_quad_clean.evt
Size (bytes)628,764,48078,635,520
Size599.6 MB 75.0 MB
Events in quadrant A3,269,381588,137
Events in quadrant B3,805,105623,562
Events in quadrant C3,222,006551,768
Events in quadrant D12,498,483186,513

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142321
B0157411
C0141141
D0414021

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61661943.146286%
B61673285.318631%
C61661101.783977%
D6166423668.699319%

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 7091 6166 114 114 1.61% 1.85%
B 7092 6168 225 225 3.17% 3.65%
C 7091 6167 69 69 0.97% 1.12%
D 7090 6165 3663 3663 51.66% 59.42%

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 15 174 542124 3326.89 652 635 162.8
A 13 248 52107 316.24 652 635 162.8
A 14 239 32006 192.74 652 635 162.8
B 5 185 675090 4919.65 640 621 137.1
B 0 213 227763 1656.8 640 621 137.1
B 2 249 151896 1103.42 640 621 137.1
C 13 3 292974 1676.66 636 630 174.4
C 12 249 90852 517.44 636 630 174.4
C 1 241 90537 515.64 636 630 174.4
D 8 176 8667886 85450.94 354 338 101.4
D 2 165 1036418 10214.42 354 338 101.4
D 10 172 532438 5245.83 354 338 101.4

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