ASTROSAT CZTI

Data Quality Report

Orbit 55886

Creation date: 2026-01-26T13:01:12.855834
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_55886cztM0_level2.fits modeM0/AS1A14_030T02_9000006544_55886cztM0_level2_quad_clean.evt
Size (bytes)505,111,680106,790,400
Size481.7 MB 101.8 MB
Events in quadrant A5,545,409674,516
Events in quadrant B3,465,164756,304
Events in quadrant C5,135,941630,551
Events in quadrant D3,952,760636,783

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219980
B0161220
C0211671
D0171110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76983764.884386%
B7698500.649519%
C76986638.612627%
D7698330.428683%

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 7698 7698 416 416 5.40% 5.40%
B 7698 7698 2 2 0.03% 0.03%
C 7698 7698 490 490 6.37% 6.37%
D 7698 7698 32 32 0.42% 0.42%

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 12 115 1767391 9144.2 787 766 193.2
A 3 14 315713 1630.19 787 766 193.2
A 15 32 154747 797.02 787 766 193.2
B 0 199 148065 862.47 792 763 170.8
B 5 185 41650 239.4 792 763 170.8
B 2 249 41585 239.02 792 763 170.8
C 15 199 1522357 7497.02 748 741 203.0
C 12 254 406378 1998.58 748 741 203.0
C 6 223 95603 467.39 748 741 203.0
D 2 62 303517 1384.78 772 736 218.6
D 3 12 128748 585.47 772 736 218.6
D 2 31 112684 512.0 772 736 218.6

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