ASTROSAT CZTI

Data Quality Report

Orbit 48519

Creation date: 2024-09-21T12:16:17.317912
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_037T05_9000006434_48519cztM0_level2.fits modeM0/AS1A13_037T05_9000006434_48519cztM0_level2_quad_clean.evt
Size (bytes)432,388,800104,160,960
Size412.4 MB 99.3 MB
Events in quadrant A6,837,898667,174
Events in quadrant B3,047,290720,298
Events in quadrant C2,734,315693,180
Events in quadrant D2,886,278624,546

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024918159
B01379546
C01318172
D01378760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0211
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01342
B01342
C01340
D01342

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64203094.813084%
B6444851.319056%
C6432190.295398%
D6437490.761224%

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 8832 6464 96 96 1.09% 1.49%
B 8832 6466 11 11 0.12% 0.17%
C 8833 6462 0 0 0.00% 0.00%
D 8832 6466 27 27 0.31% 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 10 83 3937377 27463.32 694 679 143.3
A 13 248 129985 902.07 694 679 143.3
A 12 189 57940 399.47 694 679 143.3
B 5 255 140728 1014.37 708 684 138.1
B 0 186 83159 597.38 708 684 138.1
B 12 16 17893 124.65 708 684 138.1
C 3 233 9752 54.74 696 699 165.4
C 14 254 8417 46.67 696 699 165.4
C 13 61 4604 23.61 696 699 165.4
D 2 249 222446 1292.57 685 664 171.6
D 2 234 26467 150.38 685 664 171.6
D 2 165 23050 130.47 685 664 171.6

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