ASTROSAT CZTI

Data Quality Report

Orbit 52082

Creation date: 2025-05-15T11:38:24.822298
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/AS1C09_011T07_9000006470_52082cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52082cztM0_level2_quad_clean.evt
Size (bytes)1,186,715,52055,169,280
Size1.1 GB 52.6 MB
Events in quadrant A4,528,183550,991
Events in quadrant B10,949,352300,613
Events in quadrant C10,871,875358,987
Events in quadrant D17,088,90215,331

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181430
B0369605
C0367310
D0549380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63664547.131637%
B6365359456.465043%
C6365277143.534957%
D6365623597.957581%

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 6366 6366 382 382 6.00% 6.00%
B 6365 6365 2701 2701 42.44% 42.44%
C 6365 6365 2695 2695 42.34% 42.34%
D 6364 6364 6185 6185 97.19% 97.19%

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 11 3 471308 2889.45 648 631 162.9
A 3 130 449930 2758.21 648 631 162.9
A 5 241 236543 1448.24 648 631 162.9
B 5 172 7356007 82691.77 416 402 89.0
B 10 254 864726 9716.74 416 402 89.0
B 10 128 223570 2508.86 416 402 89.0
C 15 224 3519336 24756.4 514 510 142.1
C 5 80 2958760 20812.52 514 510 142.1
C 15 248 1315724 9253.08 514 510 142.1
D 15 94 13660966 253941.44 179 170 53.8
D 6 42 1781634 33115.75 179 170 53.8
D 3 12 405818 7540.62 179 170 53.8

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