ASTROSAT CZTI

Data Quality Report

Orbit 50888

Creation date: 2025-02-24T10:18:48.739599
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/AS1C07_001T01_9000006450_50888cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50888cztM0_level2_quad_clean.evt
Size (bytes)759,962,88082,866,240
Size724.8 MB 79.0 MB
Events in quadrant A9,798,016466,137
Events in quadrant B4,339,018644,499
Events in quadrant C5,706,445518,714
Events in quadrant D7,773,421416,726

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0337091
B0175891
C0215091
D0276321

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6637211731.896941%
B66384857.306418%
C663896214.492317%
D6637196729.636884%

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 7192 6638 1928 1928 26.81% 29.04%
B 7193 6639 279 279 3.88% 4.20%
C 7193 6639 633 633 8.80% 9.53%
D 7192 6637 1165 1165 16.20% 17.55%

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 4 4 3557973 22552.34 636 622 157.7
A 12 80 1524331 9659.77 636 622 157.7
A 7 206 1104054 6995.36 636 622 157.7
B 4 206 602213 4150.28 681 657 144.9
B 8 128 553823 3816.43 681 657 144.9
B 3 249 107732 738.74 681 657 144.9
C 1 29 1074476 6135.36 639 634 175.0
C 1 124 849886 4852.17 639 634 175.0
C 13 3 423181 2414.21 639 634 175.0
D 7 45 3591508 21417.27 600 579 167.7
D 10 181 601869 3586.25 600 579 167.7
D 2 249 247385 1472.01 600 579 167.7

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