ASTROSAT CZTI

Data Quality Report

Orbit 14081

Creation date: 2024-06-27T16:50:06.779746
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/AS1G08_055T01_9000002076_14081cztM0_level2.evt modeM0/AS1G08_055T01_9000002076_14081cztM0_level2_quad_clean.evt
Size (bytes)528,511,68090,478,080
Size504.0 MB 86.3 MB
Events in quadrant A3,611,139592,067
Events in quadrant B5,565,616562,806
Events in quadrant C3,024,416589,164
Events in quadrant D3,391,248569,676

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146362
B0206031
C0129871
D0141691

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6094861.411224%
B609482313.505087%
C6094651.066623%
D6094771.263538%

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 7270 6096 6 6 0.08% 0.10%
B 7270 6096 495 495 6.81% 8.12%
C 7270 6096 3 3 0.04% 0.05%
D 7270 6096 9 9 0.12% 0.15%

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 15 222 290761 1877.43 782 769 154.5
A 8 15 150704 970.69 782 769 154.5
A 12 189 84025 539.01 782 769 154.5
B 10 16 2346258 17097.25 748 731 137.2
B 3 209 100532 727.48 748 731 137.2
B 0 189 39996 286.21 748 731 137.2
C 3 233 61124 353.06 754 759 171.0
C 0 207 23305 131.87 754 759 171.0
C 13 61 5445 27.41 754 759 171.0
D 2 152 138686 775.66 755 738 177.8
D 8 195 112428 628.01 755 738 177.8
D 1 52 94211 525.58 755 738 177.8

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