ASTROSAT CZTI

Data Quality Report

Orbit 30126

Creation date: 2024-06-27T20:11:14.655865
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/AS1A10_097T01_9000004334_30126cztM0_level2.evt modeM0/AS1A10_097T01_9000004334_30126cztM0_level2_quad_clean.evt
Size (bytes)609,402,24097,695,360
Size581.2 MB 93.2 MB
Events in quadrant A3,295,832636,597
Events in quadrant B5,265,126631,241
Events in quadrant C5,533,406599,287
Events in quadrant D3,901,488617,431

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143242
B0207902
C0210872
D0156622

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67902213.254786%
B67903084.536082%
C67914716.935650%
D67911982.915624%

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 7095 6793 17 17 0.24% 0.25%
B 7095 6792 14 14 0.20% 0.21%
C 7096 6793 19 19 0.27% 0.28%
D 7096 6794 28 28 0.39% 0.41%

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 107051 640.02 824 804 166.0
A 13 254 11435 64.04 824 804 166.0
A 8 192 10588 58.94 824 804 166.0
B 6 159 1896649 12117.59 805 782 156.5
B 4 171 142360 904.91 805 782 156.5
B 0 190 55506 349.77 805 782 156.5
C 3 233 2358719 12973.33 776 780 181.8
C 14 238 123863 677.2 776 780 181.8
C 2 114 15480 80.88 776 780 181.8
D 13 104 258166 1332.06 804 785 193.2
D 8 195 209824 1081.87 804 785 193.2
D 12 33 137770 708.96 804 785 193.2

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