ASTROSAT CZTI

Data Quality Report

Orbit 48025

Creation date: 2024-09-04T19:37:50.000579
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_053T01_9000006388_48025cztM0_level2.fits modeM0/AS1A13_053T01_9000006388_48025cztM0_level2_quad_clean.evt
Size (bytes)492,079,680109,304,640
Size469.3 MB 104.2 MB
Events in quadrant A7,101,873706,324
Events in quadrant B3,585,351760,000
Events in quadrant C3,223,985731,418
Events in quadrant D3,791,456651,367

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254742
B0153982
C0143842
D0162042

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66054486.782740%
B66061772.679382%
C6606981.483500%
D66052553.860712%

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 8900 6607 161 161 1.81% 2.44%
B 8901 6608 66 66 0.74% 1.00%
C 8901 6608 52 52 0.58% 0.79%
D 8900 6607 165 165 1.85% 2.50%

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 4226281 27889.21 730 715 151.5
A 7 3 20270 129.07 730 715 151.5
A 10 255 12870 80.22 730 715 151.5
B 4 171 205625 1413.08 743 721 145.0
B 5 255 126831 869.69 743 721 145.0
B 0 200 126133 864.88 743 721 145.0
C 12 2 246337 1449.29 728 730 169.5
C 0 207 40876 236.9 728 730 169.5
C 1 3 35496 205.15 728 730 169.5
D 2 249 612316 3413.36 715 692 179.2
D 5 222 176013 978.43 715 692 179.2
D 12 2 80686 446.43 715 692 179.2

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