ASTROSAT CZTI

Data Quality Report

Orbit 39986

Creation date: 2024-06-27T22:10:57.072669
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/AS1A12_054T03_9000005516_39986cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_39986cztM0_level2_quad_clean.evt
Size (bytes)381,853,44085,631,040
Size364.2 MB 81.7 MB
Events in quadrant A2,921,644591,197
Events in quadrant B3,242,451597,518
Events in quadrant C2,584,657580,912
Events in quadrant D4,965,932445,996

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118242
B0132431
C0110121
D0184791

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5394210.389321%
B53941843.411198%
C5394150.278087%
D539494417.500927%

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 7068 5395 18 18 0.25% 0.33%
B 7068 5395 127 127 1.80% 2.35%
C 7068 5395 10 10 0.14% 0.19%
D 7068 5395 918 918 12.99% 17.02%

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 481745 3911.49 595 582 123.0
A 13 248 82054 662.31 595 582 123.0
A 15 223 44345 355.76 595 582 123.0
B 4 171 762229 6577.16 587 570 115.8
B 5 255 71948 616.37 587 570 115.8
B 0 230 38786 330.01 587 570 115.8
C 15 214 229018 1666.57 583 586 137.1
C 0 10 35169 252.31 583 586 137.1
C 15 208 19742 139.76 583 586 137.1
D 2 249 2031237 15376.01 532 516 132.1
D 12 227 505392 3822.77 532 516 132.1
D 2 250 179704 1356.76 532 516 132.1

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