ASTROSAT CZTI

Data Quality Report

Orbit 47857

Creation date: 2024-08-05T12:37:04.624610
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_038T01_9000006360_47857cztM0_level2.fits modeM0/AS1A09_038T01_9000006360_47857cztM0_level2_quad_clean.evt
Size (bytes)314,277,12048,136,320
Size299.7 MB 45.9 MB
Events in quadrant A3,195,907333,088
Events in quadrant B1,393,530338,050
Events in quadrant C1,260,005335,044
Events in quadrant D5,527,531217,831

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120710
B067130
C065890
D0186920

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3287180.547612%
B328850.152068%
C328800.000000%
D3288115635.158151%

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 3287 3287 1 1 0.03% 0.03%
B 3288 3288 2 2 0.06% 0.06%
C 3288 3288 0 0 0.00% 0.00%
D 3288 3288 1272 1272 38.69% 38.69%

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 1822277 26104.16 330 324 69.8
A 3 7 66943 954.49 330 324 69.8
A 0 31 32270 457.71 330 324 69.8
B 5 255 56354 861.47 327 317 65.0
B 0 197 18442 278.64 327 317 65.0
B 4 21 9907 147.43 327 317 65.0
C 3 110 4215 50.92 320 322 76.4
C 12 250 3988 47.95 320 322 76.4
C 13 61 2057 22.69 320 322 76.4
D 2 37 2167528 30341.94 279 270 71.4
D 2 165 952540 13331.92 279 270 71.4
D 12 2 871273 12194.17 279 270 71.4

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