ASTROSAT CZTI

Data Quality Report

Orbit 17461

Creation date: 2024-06-27T17:36:50.559014
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/AS1T03_067T01_9000002582_17461cztM0_level2.evt modeM0/AS1T03_067T01_9000002582_17461cztM0_level2_quad_clean.evt
Size (bytes)559,776,96099,515,520
Size533.8 MB 94.9 MB
Events in quadrant A3,706,462631,116
Events in quadrant B4,462,284631,923
Events in quadrant C3,695,934607,635
Events in quadrant D4,554,903596,730

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163532
B0185662
C0162692
D0188642

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78551021.298536%
B78562693.424134%
C78561271.616599%
D78561391.769348%

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 8415 7859 5 5 0.06% 0.06%
B 8416 7860 51 51 0.61% 0.65%
C 8416 7860 0 0 0.00% 0.00%
D 8416 7860 61 61 0.72% 0.78%

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 28308 141.05 951 930 194.1
A 12 96 16796 81.74 951 930 194.1
A 0 226 8526 39.14 951 930 194.1
B 7 220 263350 1464.52 946 923 179.2
B 4 216 164683 913.89 946 923 179.2
B 15 35 122302 677.38 946 923 179.2
C 14 238 137481 646.25 902 905 211.3
C 3 233 23727 107.99 902 905 211.3
C 5 218 8783 37.28 902 905 211.3
D 13 189 466560 2092.74 917 888 222.5
D 13 232 264152 1183.11 917 888 222.5
D 13 168 127061 567.02 917 888 222.5

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