ASTROSAT CZTI

Data Quality Report

Orbit 58555

Creation date: 2026-07-25T01:13:51.233944
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_044T04_9000006592_58555cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58555cztM0_level2_quad_clean.evt
Size (bytes)482,832,00089,256,960
Size460.5 MB 85.1 MB
Events in quadrant A3,502,809625,435
Events in quadrant B6,666,084489,113
Events in quadrant C2,922,115601,918
Events in quadrant D4,295,704549,874

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147863
B0239443
C0132254
D0171443

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62481091.744558%
B6248186529.849552%
C6247440.704338%
D62472013.217544%

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 7423 6250 58 58 0.78% 0.93%
B 7423 6246 1211 1211 16.31% 19.39%
C 7422 6248 18 18 0.24% 0.29%
D 7422 6249 177 177 2.38% 2.83%

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 10 248 435163 2509.32 697 680 173.1
A 10 17 134710 774.08 697 680 173.1
A 13 248 53126 302.9 697 680 173.1
B 6 255 3990436 34185.25 548 529 116.7
B 4 171 123463 1053.29 548 529 116.7
B 0 171 109541 934.01 548 529 116.7
C 4 5 62442 328.73 680 676 187.9
C 12 252 61928 325.99 680 676 187.9
C 9 237 43615 228.53 680 676 187.9
D 2 249 530835 2780.41 667 637 190.7
D 8 240 413971 2167.56 667 637 190.7
D 3 12 258939 1354.56 667 637 190.7

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