ASTROSAT CZTI

Data Quality Report

Orbit 32742

Creation date: 2024-06-27T20:41:26.768965
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_123T04_9000004726_32742cztM0_level2.evt modeM0/AS1A10_123T04_9000004726_32742cztM0_level2_quad_clean.evt
Size (bytes)818,280,000156,456,000
Size780.4 MB 149.2 MB
Events in quadrant A5,161,7841,020,244
Events in quadrant B5,058,3931,046,722
Events in quadrant C4,467,3971,055,594
Events in quadrant D9,458,585963,874

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217361
B0211311
C0197851
D0346941

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01920
B01920
C01920
D01920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A94033433.647772%
B9403630.669999%
C9403961.020951%
D9403100410.677443%

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 12629 9405 295 295 2.34% 3.14%
B 12629 9405 22 22 0.17% 0.23%
C 12629 9404 68 68 0.54% 0.72%
D 12629 9405 816 816 6.46% 8.68%

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 15 249 973527 4594.13 1049 1029 211.7
A 15 237 88493 413.18 1049 1029 211.7
A 0 254 38460 176.83 1049 1029 211.7
B 3 26 276704 1341.31 1085 1062 205.5
B 0 219 180947 875.34 1085 1062 205.5
B 4 251 90108 433.31 1085 1062 205.5
C 0 10 165116 675.86 1046 1055 242.7
C 9 54 73694 299.24 1046 1055 242.7
C 8 79 41448 166.4 1046 1055 242.7
D 7 80 1677332 7010.06 1001 978 239.1
D 8 195 1507582 6300.21 1001 978 239.1
D 2 250 741426 3096.35 1001 978 239.1

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