ASTROSAT CZTI

Data Quality Report

Orbit 32846

Creation date: 2024-06-27T20:43:01.086948
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/AS1C06_010T05_9000004736_32846cztM0_level2.evt modeM0/AS1C06_010T05_9000004736_32846cztM0_level2_quad_clean.evt
Size (bytes)515,315,52097,211,520
Size491.4 MB 92.7 MB
Events in quadrant A2,288,049674,348
Events in quadrant B3,053,398683,662
Events in quadrant C3,902,139649,943
Events in quadrant D6,021,188582,149

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101223
B0123292
C0150782
D0214772

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A503830.059547%
B50381953.870584%
C50382003.969829%
D503890217.903930%

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 7130 5039 0 0 0.00% 0.00%
B 7130 5039 127 127 1.78% 2.52%
C 7130 5039 156 156 2.19% 3.10%
D 7130 5039 749 749 10.50% 14.86%

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 9 143 10692 86.08 587 576 117.5
A 13 254 9712 77.74 587 576 117.5
A 0 226 5165 39.05 587 576 117.5
B 5 172 510103 4656.0 583 570 109.4
B 0 219 54358 491.5 583 570 109.4
B 0 197 50593 457.1 583 570 109.4
C 3 233 1277229 10183.27 551 556 125.4
C 9 160 225378 1793.27 551 556 125.4
C 0 10 202913 1614.08 551 556 125.4
D 8 195 1085850 8244.58 521 509 131.6
D 12 33 839240 6371.26 521 509 131.6
D 2 250 465344 3531.03 521 509 131.6

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