ASTROSAT CZTI

Data Quality Report

Orbit 37447

Creation date: 2024-06-27T21:40:05.482619
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/AS1A09_002T01_9000005322_37447cztM0_level2.evt modeM0/AS1A09_002T01_9000005322_37447cztM0_level2_quad_clean.evt
Size (bytes)432,956,16062,196,480
Size412.9 MB 59.3 MB
Events in quadrant A3,278,919383,844
Events in quadrant B2,715,926396,099
Events in quadrant C3,076,809384,603
Events in quadrant D3,697,359364,135

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128783
B0110882
C0120202
D0143672

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5053480.949931%
B5053380.752028%
C50531192.355037%
D50531803.562240%

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 7025 5054 17 17 0.24% 0.34%
B 7025 5054 21 21 0.30% 0.42%
C 7025 5054 98 98 1.40% 1.94%
D 7025 5054 152 152 2.16% 3.01%

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 15 222 570602 4646.22 615 605 122.7
A 10 83 262508 2134.85 615 605 122.7
A 12 189 25892 206.12 615 605 122.7
B 5 184 60875 530.23 614 601 113.7
B 5 172 49897 433.66 614 601 113.7
B 4 171 41785 362.3 614 601 113.7
C 15 214 230391 1674.12 599 604 137.3
C 14 254 229138 1664.99 599 604 137.3
C 0 10 224482 1631.07 599 604 137.3
D 13 249 565309 3981.35 592 576 141.8
D 1 47 343671 2418.81 592 576 141.8
D 2 152 108604 761.59 592 576 141.8

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