ASTROSAT CZTI

Data Quality Report

Orbit 39446

Creation date: 2024-06-27T22:04:39.937275
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_025T17_9000005476_39446cztM0_level2.fits modeM0/AS1A12_025T17_9000005476_39446cztM0_level2_quad_clean.evt
Size (bytes)445,930,56091,002,240
Size425.3 MB 86.8 MB
Events in quadrant A6,683,764529,667
Events in quadrant B2,612,844678,186
Events in quadrant C3,000,168639,996
Events in quadrant D3,804,499542,549

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233773
B0109132
C0119542
D0146982

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5215123023.585810%
B5215120.230105%
C5215390.747843%
D52154478.571429%

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 7248 5216 1219 1219 16.82% 23.37%
B 7248 5216 4 4 0.06% 0.08%
C 7248 5216 37 37 0.51% 0.71%
D 7248 5216 352 352 4.86% 6.75%

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 4043213 34639.94 575 565 116.7
A 10 83 403301 3450.89 575 565 116.7
A 13 248 7512 59.53 575 565 116.7
B 5 172 89345 734.74 626 611 120.8
B 8 3 29020 235.23 626 611 120.8
B 0 199 27907 226.02 626 611 120.8
C 15 214 216950 1526.2 615 621 141.7
C 15 208 198217 1394.04 615 621 141.7
C 3 233 72668 508.29 615 621 141.7
D 13 249 893752 6296.74 581 564 141.8
D 2 249 336238 2366.41 581 564 141.8
D 12 227 252084 1773.15 581 564 141.8

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