ASTROSAT CZTI

Data Quality Report

Orbit 39966

Creation date: 2024-06-27T22:10:41.427826
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_054T03_9000005516_39966cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_39966cztM0_level2_quad_clean.evt
Size (bytes)348,255,36095,739,840
Size332.1 MB 91.3 MB
Events in quadrant A2,877,366651,486
Events in quadrant B3,695,087638,711
Events in quadrant C2,686,782643,264
Events in quadrant D3,202,533579,933

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120152
B0147941
C0114001
D0133941

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A551580.145059%
B55153836.944696%
C5515220.398912%
D5515901.631913%

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 7398 5516 3 3 0.04% 0.05%
B 7398 5516 336 336 4.54% 6.09%
C 7398 5516 17 17 0.23% 0.31%
D 7398 5516 90 90 1.22% 1.63%

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 456980 3654.73 613 602 124.9
A 2 79 17744 137.28 613 602 124.9
A 13 248 8302 61.66 613 602 124.9
B 4 171 1008570 8776.23 601 586 114.9
B 5 255 287802 2500.71 601 586 114.9
B 4 170 31187 266.43 601 586 114.9
C 15 214 229036 1639.55 600 605 139.3
C 9 54 80719 575.01 600 605 139.3
C 0 10 25752 180.49 600 605 139.3
D 12 227 366852 2526.23 591 575 145.0
D 2 249 295486 2034.02 591 575 145.0
D 2 250 169073 1162.14 591 575 145.0

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