ASTROSAT CZTI

Data Quality Report

Orbit 48305

Creation date: 2024-09-06T13:21:10.533121
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/AS1A13_029T01_9000006422_48305cztM0_level2.fits modeM0/AS1A13_029T01_9000006422_48305cztM0_level2_quad_clean.evt
Size (bytes)515,531,520112,236,480
Size491.6 MB 107.0 MB
Events in quadrant A7,332,168730,049
Events in quadrant B3,773,808768,745
Events in quadrant C3,337,020742,027
Events in quadrant D4,095,472668,328

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0264271
B0158611
C0149711
D0171981

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70243905.552392%
B70231822.591485%
C7023650.925530%
D70242243.189066%

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 7374 7026 14 14 0.19% 0.20%
B 7373 7025 18 18 0.24% 0.26%
C 7373 7025 7 7 0.09% 0.10%
D 7374 7026 107 107 1.45% 1.52%

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 4105306 24248.62 805 788 169.3
A 13 248 78865 461.26 805 788 169.3
A 13 254 14080 78.53 805 788 169.3
B 4 21 293115 1811.13 811 785 161.4
B 0 200 110280 678.38 811 785 161.4
B 5 255 80341 492.89 811 785 161.4
C 0 207 189879 994.19 799 803 190.2
C 12 2 21597 109.34 799 803 190.2
C 14 254 10749 52.3 799 803 190.2
D 2 165 234252 1129.7 798 769 206.7
D 2 249 170274 820.14 798 769 206.7
D 12 2 146655 705.86 798 769 206.7

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