ASTROSAT CZTI

Data Quality Report

Orbit 40839

Creation date: 2024-06-27T22:21:10.322904
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_104T02_9000005572_40839cztM0_level2.fits modeM0/AS1A12_104T02_9000005572_40839cztM0_level2_quad_clean.evt
Size (bytes)399,784,32080,916,480
Size381.3 MB 77.2 MB
Events in quadrant A2,816,241560,307
Events in quadrant B2,260,949581,538
Events in quadrant C2,622,107545,163
Events in quadrant D6,715,258416,967

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113383
B0101432
C0108192
D0233822

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4937240.486125%
B493790.182297%
C4937631.276079%
D4937108121.895888%

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 7029 4938 18 18 0.26% 0.36%
B 7029 4938 8 8 0.11% 0.16%
C 7029 4938 57 57 0.81% 1.15%
D 7029 4938 1189 1189 16.92% 24.08%

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 465795 4092.37 551 541 113.7
A 13 248 130452 1142.7 551 541 113.7
A 2 79 44589 387.45 551 541 113.7
B 5 255 91824 850.29 550 535 107.4
B 12 111 13559 121.31 550 535 107.4
B 11 111 12600 112.38 550 535 107.4
C 15 214 213176 1685.78 537 540 126.1
C 14 254 180256 1424.79 537 540 126.1
C 0 10 121783 961.21 537 540 126.1
D 12 79 3113245 25389.42 495 480 122.6
D 5 222 618774 5043.14 495 480 122.6
D 2 249 521027 4245.86 495 480 122.6

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