ASTROSAT CZTI

Data Quality Report

Orbit 40972

Creation date: 2024-06-27T22:22:52.512839
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/AS1A12_052T04_9000005582_40972cztM0_level2.fits modeM0/AS1A12_052T04_9000005582_40972cztM0_level2_quad_clean.evt
Size (bytes)324,734,40093,971,520
Size309.7 MB 89.6 MB
Events in quadrant A3,169,748633,502
Events in quadrant B2,698,497642,648
Events in quadrant C2,812,430604,428
Events in quadrant D2,891,647562,605

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130053
B0122082
C0120452
D0127912

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5751130.226048%
B5751560.973744%
C5751500.869414%
D5751841.460616%

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 7155 5752 4 4 0.06% 0.07%
B 7154 5751 43 43 0.60% 0.75%
C 7155 5752 49 49 0.68% 0.85%
D 7155 5752 74 74 1.03% 1.29%

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 511915 3999.42 625 611 127.8
A 12 189 189093 1474.31 625 611 127.8
A 13 248 36858 283.52 625 611 127.8
B 5 255 251330 2058.37 619 599 121.8
B 12 111 15512 122.43 619 599 121.8
B 11 111 14281 112.32 619 599 121.8
C 15 214 248543 1747.23 609 614 141.9
C 0 10 156480 1098.43 609 614 141.9
C 14 254 17955 122.21 609 614 141.9
D 2 249 212663 1434.23 609 592 147.9
D 13 249 120266 809.35 609 592 147.9
D 12 233 74855 502.24 609 592 147.9

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