ASTROSAT CZTI

Data Quality Report

Orbit 19515

Creation date: 2024-06-27T18:03:42.272514
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_175T01_9000002894_19515cztM0_level2.evt modeM0/AS1A05_175T01_9000002894_19515cztM0_level2_quad_clean.evt
Size (bytes)643,432,32092,390,400
Size613.6 MB 88.1 MB
Events in quadrant A3,524,434607,412
Events in quadrant B3,603,065609,429
Events in quadrant C3,624,056578,812
Events in quadrant D8,236,851490,408

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152022
B0153432
C0153762
D0293072

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73461792.436700%
B73462192.981214%
C73472543.457193%
D7347159521.709541%

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 8677 7347 0 0 0.00% 0.00%
B 8677 7347 0 0 0.00% 0.00%
C 8678 7348 0 0 0.00% 0.00%
D 8678 7348 1482 1482 17.08% 20.17%

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 13 254 8570 41.78 913 893 183.7
A 0 226 7790 37.54 913 893 183.7
A 3 137 7712 37.11 913 893 183.7
B 0 198 47854 271.88 902 880 172.8
B 12 111 21832 121.27 902 880 172.8
B 11 111 19375 107.05 902 880 172.8
C 14 238 135160 657.44 870 875 204.3
C 3 233 61546 297.04 870 875 204.3
C 9 221 33197 158.24 870 875 204.3
D 7 238 4470093 22126.15 832 806 202.0
D 1 52 439670 2172.69 832 806 202.0
D 12 218 158401 780.21 832 806 202.0

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