ASTROSAT CZTI

Data Quality Report

Orbit 38494

Creation date: 2024-06-27T21:53:31.796718
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/AS1A12_018T01_9000005386_38494cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38494cztM0_level2_quad_clean.evt
Size (bytes)373,233,60090,086,400
Size355.9 MB 85.9 MB
Events in quadrant A3,871,232618,346
Events in quadrant B3,478,909609,068
Events in quadrant C2,521,604596,365
Events in quadrant D3,527,350528,779

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158863
B0138312
C0108252
D0141692

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5357581.082696%
B53572424.517454%
C535740.074669%
D53573205.973493%

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 7121 5358 36 36 0.51% 0.67%
B 7121 5358 172 172 2.42% 3.21%
C 7121 5358 1 1 0.01% 0.02%
D 7121 5358 273 273 3.83% 5.10%

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 15 222 1007462 8375.45 593 581 120.2
A 10 83 403369 3350.47 593 581 120.2
A 9 143 139600 1156.39 593 581 120.2
B 8 3 677438 6138.08 579 564 110.3
B 5 184 171241 1547.75 579 564 110.3
B 4 171 118994 1073.96 579 564 110.3
C 15 214 222455 1635.94 582 585 135.6
C 0 10 16759 119.26 582 585 135.6
C 14 254 10318 71.77 582 585 135.6
D 7 223 549495 4038.98 564 549 135.9
D 10 118 213132 1564.12 564 549 135.9
D 2 250 206468 1515.09 564 549 135.9

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