ASTROSAT CZTI

Data Quality Report

Orbit 46894

Creation date: 2024-06-27T23:29:12.272847
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/AS1A13_068T13_9000006278_46894cztM0_level2.fits modeM0/AS1A13_068T13_9000006278_46894cztM0_level2_quad_clean.evt
Size (bytes)690,577,92097,358,400
Size658.6 MB 92.8 MB
Events in quadrant A6,660,589720,969
Events in quadrant B10,810,706424,584
Events in quadrant C2,911,453728,566
Events in quadrant D4,688,125630,973

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0243741
B0365821
C0130981
D0182271

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63473575.624705%
B6348321750.677379%
C6348751.181474%
D63485077.986767%

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 7492 6347 61 61 0.81% 0.96%
B 7493 6348 2829 2829 37.76% 44.57%
C 7493 6348 7 7 0.09% 0.11%
D 7493 6348 306 306 4.08% 4.82%

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 3525031 23251.71 729 714 151.6
A 15 235 158483 1040.88 729 714 151.6
A 13 248 135387 888.51 729 714 151.6
B 3 112 8139771 72198.05 573 556 112.7
B 5 172 105718 932.83 573 556 112.7
B 15 36 103814 915.94 573 556 112.7
C 1 3 24947 143.64 725 729 168.6
C 14 254 24432 140.58 725 729 168.6
C 0 207 18408 104.85 725 729 168.6
D 13 249 896075 5052.14 712 689 177.2
D 1 52 586632 3306.13 712 689 177.2
D 2 249 209621 1178.88 712 689 177.2

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