ASTROSAT CZTI

Data Quality Report

Orbit 29228

Creation date: 2024-06-27T20:01:46.388567
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/AS1A10_115T03_9000004202_29228cztM0_level2.evt modeM0/AS1A10_115T03_9000004202_29228cztM0_level2_quad_clean.evt
Size (bytes)429,814,08061,050,240
Size409.9 MB 58.2 MB
Events in quadrant A2,067,816400,396
Events in quadrant B2,316,668401,994
Events in quadrant C5,403,382367,850
Events in quadrant D2,937,814376,137

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A088851
B096371
C0191201
D0115631

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4290360.839161%
B4290942.191142%
C429073217.062937%
D42901814.219114%

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 5015 4291 0 0 0.00% 0.00%
B 5015 4291 12 12 0.24% 0.28%
C 5015 4291 241 241 4.81% 5.62%
D 5015 4291 83 83 1.66% 1.93%

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 13 254 8334 72.34 535 524 108.0
A 3 137 5419 45.34 535 524 108.0
A 0 226 4516 36.97 535 524 108.0
B 0 229 107426 1042.84 528 515 102.5
B 10 245 89616 869.11 528 515 102.5
B 0 183 34496 331.46 528 515 102.5
C 3 233 3400109 29562.57 491 494 115.0
C 14 238 78153 675.31 491 494 115.0
C 2 114 9848 81.34 491 494 115.0
D 1 52 691240 5681.49 511 497 121.6
D 8 195 101125 827.68 511 497 121.6
D 13 153 78748 643.63 511 497 121.6

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