ASTROSAT CZTI

Data Quality Report

Orbit 43841

Creation date: 2024-06-27T22:56:27.187440
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/AS1A13_018T01_9000005906_43841cztM0_level2.fits modeM0/AS1A13_018T01_9000005906_43841cztM0_level2_quad_clean.evt
Size (bytes)855,336,960123,390,720
Size815.7 MB 117.7 MB
Events in quadrant A6,623,040849,462
Events in quadrant B5,445,126871,363
Events in quadrant C10,914,093765,476
Events in quadrant D8,062,081693,030

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255860
B0215660
C0380850
D0294890

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80014035.036870%
B80023734.661335%
C8002138117.258185%
D8002115514.433892%

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 8001 8001 273 273 3.41% 3.41%
B 8001 8001 256 256 3.20% 3.20%
C 8002 8002 1280 1280 16.00% 16.00%
D 8002 8002 1076 1076 13.45% 13.45%

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 15 223 1877743 9968.64 901 883 188.3
A 10 83 1107131 5875.66 901 883 188.3
A 2 79 47101 245.48 901 883 188.3
B 0 200 561634 3183.39 892 867 176.2
B 5 235 361512 2047.33 892 867 176.2
B 5 172 315566 1786.5 892 867 176.2
C 3 233 5898512 29526.19 844 849 199.7
C 15 158 1447368 7241.89 844 849 199.7
C 15 174 122775 610.41 844 849 199.7
D 5 235 1657379 7952.35 829 803 208.3
D 10 102 1272725 6105.83 829 803 208.3
D 12 2 371422 1779.15 829 803 208.3

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