ASTROSAT CZTI

Data Quality Report

Orbit 47379

Creation date: 2024-07-02T14:11:42.481248
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_093T25_9000006324_47379cztM0_level2.fits modeM0/AS1A13_093T25_9000006324_47379cztM0_level2_quad_clean.evt
Size (bytes)891,288,00097,315,200
Size850.0 MB 92.8 MB
Events in quadrant A7,901,878765,792
Events in quadrant B3,842,738806,513
Events in quadrant C3,425,861769,980
Events in quadrant D17,245,97187,338

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0294773
B0164231
C0155950
D05634417

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74263254.376515%
B74271902.558233%
C7427570.767470%
D7425667789.925926%

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 7427 7427 3 3 0.04% 0.04%
B 7426 7426 55 55 0.74% 0.74%
C 7427 7427 29 29 0.39% 0.39%
D 7426 7424 5746 5746 77.38% 77.40%

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 3586426 20096.92 843 826 178.4
A 15 235 934349 5232.3 843 826 178.4
A 9 191 58069 320.84 843 826 178.4
B 5 32 205388 1211.1 843 814 168.9
B 4 171 133398 784.91 843 814 168.9
B 12 3 57773 337.2 843 814 168.9
C 1 3 84691 424.03 831 834 197.8
C 0 207 73557 367.73 831 834 197.8
C 3 233 20438 99.13 831 834 197.8
D 12 2 16003956 218227.21 286 276 73.3
D 2 165 38181 516.88 286 276 73.3
D 7 38 33762 456.62 286 276 73.3

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