ASTROSAT CZTI

Data Quality Report

Orbit 42657

Creation date: 2024-06-27T22:42:42.845131
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/AS1A05_013T01_9000005822_42657cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42657cztM0_level2_quad_clean.evt
Size (bytes)357,520,32090,809,280
Size341.0 MB 86.6 MB
Events in quadrant A2,971,706615,081
Events in quadrant B3,938,709600,948
Events in quadrant C2,629,704593,339
Events in quadrant D3,255,987546,648

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122392
B0154892
C0114802
D0137322

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5628140.248756%
B56282774.921819%
C5628170.302061%
D56281182.096660%

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 7181 5629 7 7 0.10% 0.12%
B 7181 5629 218 218 3.04% 3.87%
C 7181 5629 14 14 0.19% 0.25%
D 7181 5629 107 107 1.49% 1.90%

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 585512 4587.62 613 601 127.5
A 13 248 7129 51.2 613 601 127.5
A 3 137 7127 51.19 613 601 127.5
B 10 246 796625 6730.1 600 581 118.3
B 0 229 627670 5301.68 600 581 118.3
B 0 245 61914 518.54 600 581 118.3
C 15 214 233389 1665.34 594 598 139.8
C 9 54 50369 356.05 594 598 139.8
C 14 254 14878 102.16 594 598 139.8
D 12 6 262541 1810.8 590 573 144.7
D 2 249 235952 1627.01 590 573 144.7
D 13 249 152111 1047.47 590 573 144.7

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