ASTROSAT CZTI

Data Quality Report

Orbit 30794

Creation date: 2024-06-27T20:19:43.627962
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_071T25_9000004450_30794cztM0_level2.evt modeM0/AS1A10_071T25_9000004450_30794cztM0_level2_quad_clean.evt
Size (bytes)730,995,84087,333,120
Size697.1 MB 83.3 MB
Events in quadrant A3,195,037575,606
Events in quadrant B5,077,839569,684
Events in quadrant C5,425,948525,872
Events in quadrant D7,990,911509,179

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137481
B0202151
C0207421
D0283131

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66481091.639591%
B66491812.722214%
C66494827.249210%
D6649115917.431193%

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 6953 6648 0 0 0.00% 0.00%
B 6954 6649 1 1 0.01% 0.02%
C 6954 6649 241 241 3.47% 3.62%
D 6954 6649 1109 1109 15.95% 16.68%

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 12863 71.45 828 808 168.7
A 3 137 8555 45.92 828 808 168.7
A 0 226 7008 36.75 828 808 168.7
B 6 159 1802868 11370.82 812 791 158.5
B 0 190 39961 247.15 812 791 158.5
B 12 111 19482 117.93 812 791 158.5
C 3 233 2182274 11777.23 777 782 185.2
C 14 238 124269 666.67 777 782 185.2
C 0 10 67174 358.43 777 782 185.2
D 8 195 4942253 26041.78 775 756 189.8
D 2 250 55907 290.65 775 756 189.8
D 2 234 33075 170.32 775 756 189.8

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