ASTROSAT CZTI

Data Quality Report

Orbit 19137

Creation date: 2024-06-27T17:59:26.063165
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/AS1A05_046T01_9000002838_19137cztM0_level2.evt modeM0/AS1A05_046T01_9000002838_19137cztM0_level2_quad_clean.evt
Size (bytes)450,135,36094,743,360
Size429.3 MB 90.4 MB
Events in quadrant A3,155,157602,548
Events in quadrant B3,335,955623,721
Events in quadrant C3,244,073603,048
Events in quadrant D3,452,521583,616

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136002
B0140652
C0136512
D0147002

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6546450.687443%
B6546831.267950%
C6546771.176291%
D6546661.008249%

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 7626 6547 0 0 0.00% 0.00%
B 7626 6547 6 6 0.08% 0.09%
C 7626 6547 0 0 0.00% 0.00%
D 7626 6547 37 37 0.49% 0.57%

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 11 47 8836 48.78 816 799 164.8
A 0 226 7182 38.74 816 799 164.8
A 13 254 6225 32.93 816 799 164.8
B 7 220 65966 413.64 822 803 157.5
B 3 112 27900 172.0 822 803 157.5
B 12 111 18427 111.87 822 803 157.5
C 14 238 123604 654.45 799 806 187.6
C 7 220 8531 41.17 799 806 187.6
C 13 61 5508 25.06 799 806 187.6
D 1 52 165122 846.4 800 777 194.2
D 11 176 136642 699.72 800 777 194.2
D 10 199 107935 551.87 800 777 194.2

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