ASTROSAT CZTI

Data Quality Report

Orbit 26233

Creation date: 2024-06-27T19:26:25.192614
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/AS1A09_079T03_9000003790_26233cztM0_level2.evt modeM0/AS1A09_079T03_9000003790_26233cztM0_level2_quad_clean.evt
Size (bytes)539,498,88091,033,920
Size514.5 MB 86.8 MB
Events in quadrant A3,406,037570,483
Events in quadrant B3,589,885588,832
Events in quadrant C3,491,220570,030
Events in quadrant D5,376,593539,647

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147060
B0152490
C0148730
D0206720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70022313.299057%
B70032353.355705%
C70032493.555619%
D70036769.653006%

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 7157 7004 14 14 0.20% 0.20%
B 7158 7005 6 6 0.08% 0.09%
C 7158 7005 6 6 0.08% 0.09%
D 7158 7005 458 458 6.40% 6.54%

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 0 13 130527 750.15 847 826 172.9
A 6 16 10505 55.98 847 826 172.9
A 13 254 10009 53.11 847 826 172.9
B 7 219 150255 916.55 842 819 163.0
B 7 235 83141 504.91 842 819 163.0
B 7 187 24969 148.12 842 819 163.0
C 3 233 200831 1052.27 810 814 190.1
C 14 238 127294 665.4 810 814 190.1
C 13 61 5596 25.16 810 814 190.1
D 1 52 1786844 9328.42 794 774 191.5
D 12 233 536031 2795.58 794 774 191.5
D 2 234 28022 142.31 794 774 191.5

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