ASTROSAT CZTI

Data Quality Report

Orbit 56847

Creation date: 2026-04-01T04:35:29.835071
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_083T03_9000006562_56847cztM0_level2.fits modeM0/AS1A14_083T03_9000006562_56847cztM0_level2_quad_clean.evt
Size (bytes)531,688,320118,874,880
Size507.1 MB 113.4 MB
Events in quadrant A4,766,197763,891
Events in quadrant B4,168,639833,559
Events in quadrant C3,876,421746,772
Events in quadrant D6,220,234674,316

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204501
B0184451
C0178141
D0243701

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83633293.933995%
B83641712.044476%
C8364570.681492%
D83635426.480928%

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 8378 8364 248 248 2.96% 2.97%
B 8379 8365 69 69 0.82% 0.82%
C 8379 8365 40 40 0.48% 0.48%
D 8378 8364 432 432 5.16% 5.16%

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 62 810684 3643.84 897 877 222.2
A 10 251 200825 899.69 897 877 222.2
A 7 64 145251 649.63 897 877 222.2
B 10 16 172529 884.34 894 862 194.1
B 5 185 136907 700.83 894 862 194.1
B 0 245 68219 346.99 894 862 194.1
C 13 3 116104 477.36 877 867 241.4
C 14 254 109235 448.91 877 867 241.4
C 12 252 86666 355.42 877 867 241.4
D 8 240 1744457 7371.57 849 813 236.5
D 2 249 694095 2930.97 849 813 236.5
D 2 31 141386 594.3 849 813 236.5

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