ASTROSAT CZTI

Data Quality Report

Orbit 55892

Creation date: 2026-01-26T22:58:52.369115
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_030T02_9000006544_55892cztM0_level2.fits modeM0/AS1A14_030T02_9000006544_55892cztM0_level2_quad_clean.evt
Size (bytes)469,465,92096,485,760
Size447.7 MB 92.0 MB
Events in quadrant A5,738,691625,086
Events in quadrant B2,990,928679,820
Events in quadrant C3,720,764591,254
Events in quadrant D4,402,359554,088

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219011
B0140721
C0161641
D0176271

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67652002.956393%
B6765560.827790%
C67652123.133777%
D67662924.315696%

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 7635 6766 192 192 2.51% 2.84%
B 7635 6766 8 8 0.10% 0.12%
C 7635 6766 110 110 1.44% 1.63%
D 7636 6767 245 245 3.21% 3.62%

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 3 14 2422755 13825.5 704 686 175.2
A 15 32 262529 1494.64 704 686 175.2
A 0 8 158698 901.95 704 686 175.2
B 0 199 95091 625.33 699 674 151.0
B 0 143 63634 416.99 699 674 151.0
B 0 153 18204 116.1 699 674 151.0
C 12 252 740749 3919.51 681 673 188.8
C 6 223 182164 961.19 681 673 188.8
C 15 199 100256 527.4 681 673 188.8
D 11 129 705334 3696.89 679 651 190.6
D 3 12 336750 1763.23 679 651 190.6
D 7 96 182812 955.65 679 651 190.6

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