ASTROSAT CZTI

Data Quality Report

Orbit 46491

Creation date: 2024-06-27T23:23:47.719811
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/AS1A13_068T05_9000006218_46491cztM0_level2.fits modeM0/AS1A13_068T05_9000006218_46491cztM0_level2_quad_clean.evt
Size (bytes)557,470,080113,929,920
Size531.6 MB 108.7 MB
Events in quadrant A6,666,332750,671
Events in quadrant B3,569,585797,100
Events in quadrant C3,534,631770,580
Events in quadrant D6,314,434637,478

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0239973
B0153702
C0155762
D0236022

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71004696.605634%
B71002884.056338%
C71012022.844670%
D710189412.589776%

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 9130 7100 66 66 0.72% 0.93%
B 9130 7101 41 41 0.45% 0.58%
C 9131 7102 63 63 0.69% 0.89%
D 9131 7101 677 677 7.41% 9.53%

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 3276585 19118.73 824 805 171.3
A 13 248 179104 1040.62 824 805 171.3
A 0 243 13786 75.76 824 805 171.3
B 5 172 143453 858.62 829 801 166.1
B 0 190 54121 320.93 829 801 166.1
B 5 255 27251 159.2 829 801 166.1
C 14 254 332310 1721.8 816 817 192.5
C 12 2 11459 55.28 816 817 192.5
C 3 233 10528 50.44 816 817 192.5
D 13 249 1464161 7470.48 783 755 195.9
D 7 80 765196 3902.36 783 755 195.9
D 2 249 518287 2641.93 783 755 195.9

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