ASTROSAT CZTI

Data Quality Report

Orbit 15337

Creation date: 2024-06-27T17:07:04.844421
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/AS1T02_073T01_9000002260_15337cztM0_level2.evt modeM0/AS1T02_073T01_9000002260_15337cztM0_level2_quad_clean.evt
Size (bytes)466,427,52069,094,080
Size444.8 MB 65.9 MB
Events in quadrant A3,193,614408,800
Events in quadrant B3,472,314413,438
Events in quadrant C3,498,220404,975
Events in quadrant D3,498,605389,716

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139003
B0145222
C0143812
D0150632

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6810560.822320%
B6810771.130690%
C6810450.660793%
D6810971.424376%

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 7691 6811 0 0 0.00% 0.00%
B 7691 6811 7 7 0.09% 0.10%
C 7691 6812 0 0 0.00% 0.00%
D 7691 6811 38 38 0.49% 0.56%

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 0 226 7199 37.88 829 810 168.7
A 15 239 6490 33.68 829 810 168.7
A 12 194 5950 30.47 829 810 168.7
B 3 64 148698 919.21 826 803 160.9
B 10 16 51846 317.25 826 803 160.9
B 10 245 26151 157.54 826 803 160.9
C 3 233 379517 2037.49 799 801 185.9
C 13 61 5753 26.64 799 801 185.9
C 0 207 2718 10.31 799 801 185.9
D 13 122 234946 1198.01 798 774 195.5
D 2 14 161454 822.03 798 774 195.5
D 2 136 47017 236.58 798 774 195.5

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