ASTROSAT CZTI

Data Quality Report

Orbit 28684

Creation date: 2024-06-27T19:54:53.154936
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_110T03_9000004114_28684cztM0_level2.evt modeM0/AS1A10_110T03_9000004114_28684cztM0_level2_quad_clean.evt
Size (bytes)620,233,92092,816,640
Size591.5 MB 88.5 MB
Events in quadrant A3,508,147591,178
Events in quadrant B3,680,291597,884
Events in quadrant C3,921,248572,315
Events in quadrant D7,178,473540,228

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151882
B0156722
C0164402
D0265032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7312580.793217%
B73121431.955689%
C73123314.526805%
D7312110815.153173%

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 7722 7312 0 0 0.00% 0.00%
B 7722 7312 29 29 0.38% 0.40%
C 7722 7312 15 15 0.19% 0.21%
D 7722 7312 961 961 12.44% 13.14%

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 15 174 30581 162.47 899 877 182.8
A 13 254 13336 68.14 899 877 182.8
A 3 137 8928 44.03 899 877 182.8
B 15 222 93433 536.34 894 872 172.6
B 15 33 24793 138.61 894 872 172.6
B 12 111 21580 119.99 894 872 172.6
C 3 233 298442 1466.06 855 862 203.0
C 14 238 184861 906.49 855 862 203.0
C 14 254 70749 344.31 855 862 203.0
D 7 80 2092952 10436.05 832 807 200.5
D 1 52 1165342 5808.94 832 807 200.5
D 8 195 502946 2504.77 832 807 200.5

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