ASTROSAT CZTI

Data Quality Report

Orbit 20200502_A08_003T04_9000003634_level2

Creation date: 2025-01-04T12:06:14.907130
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/AS1A08_003T04_9000003634cztM0_level2.fits modeM0/AS1A08_003T04_9000003634cztM0_level2_quad_clean.evt
Size (bytes)248,414,400225,668,160
Size236.9 MB 215.2 MB
Events in quadrant A1,516,9141,344,186
Events in quadrant B1,470,6861,354,000
Events in quadrant C1,470,1201,266,844
Events in quadrant D1,270,6921,074,720

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0585760
B0546660
C0559300
D0658990

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05300
B05300
C05300
D05300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A260807432.848926%
B260805842.239264%
C260806942.661043%
D2608016896.476227%

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 28465 26079 0 0 0.00% 0.00%
B 28465 26078 0 0 0.00% 0.00%
C 28464 26080 0 0 0.00% 0.00%
D 28465 26074 0 0 0.00% 0.00%

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 29 1370 10.04 394 368 99.8
A 7 110 1232 8.66 394 368 99.8
A 9 19 1130 7.63 394 368 99.8
B 2 9 1241 11.03 387 368 79.1
B 2 8 1006 8.06 387 368 79.1
B 5 128 988 7.83 387 368 79.1
C 12 241 1035 6.68 388 360 101.0
C 3 158 1002 6.36 388 360 101.0
C 7 111 987 6.21 388 360 101.0
D 7 3 933 6.16 362 327 98.4
D 3 14 925 6.08 362 327 98.4
D 1 3 879 5.61 362 327 98.4

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