ASTROSAT CZTI

Data Quality Report

Orbit 42508

Creation date: 2024-06-27T22:41:01.143238
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/AS1C07_001T10_9000005806_42508cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42508cztM0_level2_quad_clean.evt
Size (bytes)400,711,68090,907,200
Size382.1 MB 86.7 MB
Events in quadrant A3,087,665625,534
Events in quadrant B3,052,567618,929
Events in quadrant C5,002,297550,211
Events in quadrant D3,241,805554,328

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126812
B0130815
C0187212
D0136662

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5770110.190641%
B5768420.728155%
C57705699.861352%
D57701662.876950%

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 7112 5771 4 4 0.06% 0.07%
B 7112 5770 34 34 0.48% 0.59%
C 7112 5771 537 537 7.55% 9.31%
D 7112 5771 132 132 1.86% 2.29%

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 646892 5127.0 610 597 126.1
A 12 189 60226 473.03 610 597 126.1
A 13 6 12748 96.39 610 597 126.1
B 0 229 569117 4917.84 600 582 115.6
B 0 245 58234 498.69 600 582 115.6
B 5 255 29476 249.93 600 582 115.6
C 0 239 2287867 17405.04 572 576 131.4
C 15 214 250181 1899.36 572 576 131.4
C 9 54 195374 1482.31 572 576 131.4
D 12 233 272868 1888.92 591 576 144.2
D 10 118 257366 1781.38 591 576 144.2
D 13 249 124107 856.95 591 576 144.2

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