ASTROSAT CZTI

Data Quality Report

Orbit 47281

Creation date: 2024-06-27T23:33:41.749298
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/AS1A13_025T01_9000006312_47281cztM0_level2.fits modeM0/AS1A13_025T01_9000006312_47281cztM0_level2_quad_clean.evt
Size (bytes)656,752,320110,845,440
Size626.3 MB 105.7 MB
Events in quadrant A8,819,088726,336
Events in quadrant B3,894,569775,359
Events in quadrant C3,252,247728,690
Events in quadrant D7,796,957631,650

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310896
B0163512
C0146512
D0280902

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70886899.720655%
B70881712.412528%
C7089991.396530%
D708980811.397940%

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 8453 7090 211 211 2.50% 2.98%
B 8453 7090 19 19 0.22% 0.27%
C 8454 7091 0 0 0.00% 0.00%
D 8454 7091 695 695 8.22% 9.80%

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 83 4267328 25301.27 806 788 168.6
A 9 191 1090441 6461.82 806 788 168.6
A 15 235 293085 1733.37 806 788 168.6
B 0 200 204068 1253.68 821 796 162.1
B 0 198 106685 653.07 821 796 162.1
B 5 255 66369 404.42 821 796 162.1
C 3 233 48092 245.32 807 809 192.7
C 3 110 42516 216.39 807 809 192.7
C 10 9 6042 27.15 807 809 192.7
D 6 112 3250429 16230.96 787 762 200.2
D 12 233 492330 2455.21 787 762 200.2
D 12 2 438624 2186.97 787 762 200.2

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