ASTROSAT CZTI

Data Quality Report

Orbit 56161

Creation date: 2026-02-14T01:21:34.307770
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/AS1A14_083T04_9000006550_56161cztM0_level2.fits modeM0/AS1A14_083T04_9000006550_56161cztM0_level2_quad_clean.evt
Size (bytes)780,935,04074,128,320
Size744.8 MB 70.7 MB
Events in quadrant A11,478,806145,978
Events in quadrant B3,626,529657,963
Events in quadrant C3,499,345583,515
Events in quadrant D9,792,330398,949

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0386241
B0155525
C0156381
D0336681

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6566523579.728906%
B65651612.452399%
C65661692.573865%
D6566214732.698751%

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 7086 6563 2416 2416 34.10% 36.81%
B 7085 6566 55 55 0.78% 0.84%
C 7086 6567 141 141 1.99% 2.15%
D 7086 6567 2017 2017 28.46% 30.71%

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 9 250 9168312 122015.13 299 291 75.1
A 15 32 554438 7375.02 299 291 75.1
A 12 115 311865 4146.67 299 291 75.1
B 5 185 304700 2075.94 688 664 146.5
B 4 171 87975 596.16 688 664 146.5
B 1 255 82970 561.98 688 664 146.5
C 12 252 747503 4080.99 664 657 183.0
C 12 241 99529 540.27 664 657 183.0
C 6 223 47903 258.17 664 657 183.0
D 8 129 5697432 36019.54 556 531 158.2
D 8 240 1174859 7424.87 556 531 158.2
D 2 249 227388 1434.34 556 531 158.2

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