ASTROSAT CZTI

Data Quality Report

Orbit 51149

Creation date: 2025-03-22T08:39:45.880829
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_9000006454_51149cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51149cztM0_level2_quad_clean.evt
Size (bytes)825,171,84083,724,480
Size786.9 MB 79.8 MB
Events in quadrant A9,993,755489,162
Events in quadrant B6,877,512511,767
Events in quadrant C8,526,572511,659
Events in quadrant D4,628,852554,714

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0343991
B0250521
C0298871
D0186351

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6707178426.599076%
B6708197229.397734%
C6708139720.825880%
D67084076.067382%

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 7282 6708 1573 1573 21.60% 23.45%
B 7283 6709 869 869 11.93% 12.95%
C 7283 6709 1401 1401 19.24% 20.88%
D 7283 6709 283 283 3.89% 4.22%

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 12 80 4405499 27235.36 654 639 161.7
A 12 3 2091853 12930.03 654 639 161.7
A 12 194 242446 1495.1 654 639 161.7
B 12 32 3522749 27177.87 609 588 129.6
B 4 171 312376 2405.83 609 588 129.6
B 5 185 206940 1592.26 609 588 129.6
C 12 247 4809889 26959.03 647 641 178.4
C 9 38 263822 1475.3 647 641 178.4
C 10 171 200339 1119.44 647 641 178.4
D 2 62 609224 3232.65 668 644 188.3
D 3 12 348440 1847.42 668 644 188.3
D 8 176 227359 1204.26 668 644 188.3

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