ASTROSAT CZTI

Data Quality Report

Orbit 17137

Creation date: 2024-06-27T17:32:38.219561
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_056T01_9000002540_17137cztM0_level2.evt modeM0/AS1A05_056T01_9000002540_17137cztM0_level2_quad_clean.evt
Size (bytes)586,252,80095,109,120
Size559.1 MB 90.7 MB
Events in quadrant A3,144,085624,252
Events in quadrant B3,216,498650,960
Events in quadrant C7,234,928581,694
Events in quadrant D3,732,331582,878

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132072
B0134052
C0260192
D0152352

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6313470.744495%
B6313600.950420%
C63135108.078568%
D63131001.584033%

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 7658 6314 0 0 0.00% 0.00%
B 7658 6314 0 0 0.00% 0.00%
C 7658 6313 10 10 0.13% 0.16%
D 7658 6314 85 85 1.11% 1.35%

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 12 189 25324 150.25 811 798 163.2
A 0 226 7113 38.69 811 798 163.2
A 3 137 5641 29.67 811 798 163.2
B 12 111 18519 113.78 822 802 155.7
B 11 111 15844 96.6 822 802 155.7
B 14 111 14140 85.66 822 802 155.7
C 3 233 4072180 22762.27 771 779 178.9
C 14 238 117162 650.67 771 779 178.9
C 7 247 29482 160.47 771 779 178.9
D 5 222 599588 3145.59 785 764 190.4
D 13 249 158927 830.82 785 764 190.4
D 2 234 19924 100.65 785 764 190.4

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