ASTROSAT CZTI

Data Quality Report

Orbit 15497

Creation date: 2024-06-27T17:09:20.807201
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/AS1G08_039T01_9000002292_15497cztM0_level2.evt modeM0/AS1G08_039T01_9000002292_15497cztM0_level2_quad_clean.evt
Size (bytes)295,456,32037,753,920
Size281.8 MB 36.0 MB
Events in quadrant A2,076,658218,006
Events in quadrant B2,391,610220,871
Events in quadrant C1,901,162217,468
Events in quadrant D2,313,423212,321

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A087541
B095331
C079401
D095361

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A38801193.067010%
B38801734.458763%
C3880350.902062%
D38801283.298969%

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 4786 3882 61 61 1.27% 1.57%
B 4786 3882 117 117 2.44% 3.01%
C 4786 3882 0 0 0.00% 0.00%
D 4786 3882 94 94 1.96% 2.42%

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 14 238 291004 3095.77 455 446 93.9
A 14 237 23923 250.14 455 446 93.9
A 0 253 6986 69.68 455 446 93.9
B 10 245 551908 6242.38 455 444 88.3
B 0 189 23072 256.14 455 444 88.3
B 0 244 10762 116.8 455 444 88.3
C 3 233 91641 868.89 443 445 105.0
C 14 238 68815 651.41 443 445 105.0
C 10 22 6005 52.97 443 445 105.0
D 10 70 287364 2630.78 443 430 109.1
D 7 223 169521 1550.33 443 430 109.1
D 1 52 153684 1405.12 443 430 109.1

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