ASTROSAT CZTI

Data Quality Report

Orbit 20190817_A06_009T03_9000003098_level2

Creation date: 2019-08-19T13:40:10.147490
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A06_009T03_9000003098cztM0_level2_bc.evt modeM0/AS1A06_009T03_9000003098cztM0_level2_quad_clean.evt
Size (bytes)301,340,160112,412,160
Size287.4 MB 107.2 MB
Events in quadrant A1,755,258712,822
Events in quadrant B2,213,154714,239
Events in quadrant C1,710,974694,486
Events in quadrant D2,832,423665,506

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183100
B0203520
C0183640
D0220710

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A89031641.842076%
B89033143.526901%
C89032342.628328%
D89033423.841402%

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 9753 8903 0 0 0.00% 0.00%
B 9753 8903 0 0 0.00% 0.00%
C 9753 8903 0 0 0.00% 0.00%
D 9753 8903 26 26 0.27% 0.29%

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 13 254 3801 32.96 456 446 101.8
A 0 226 2894 24.05 456 446 101.8
A 12 194 2867 23.78 456 446 101.8
B 7 220 278061 3029.78 459 448 91.6
B 0 189 61198 663.01 459 448 91.6
B 0 230 24203 259.25 459 448 91.6
C 9 54 3343 27.1 443 438 107.2
C 7 247 2747 21.54 443 438 107.2
C 10 91 2614 20.3 443 438 107.2
D 9 1 674608 6362.45 445 428 106.0
D 15 0 118834 1117.43 445 428 106.0
D 13 104 69906 655.69 445 428 106.0

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