ASTROSAT CZTI

Data Quality Report

Orbit 27499

Creation date: 2024-06-27T19:40:40.160178
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_249T01_9000003934_27499cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27499cztM0_level2_quad_clean.evt
Size (bytes)501,091,20099,567,360
Size477.9 MB 95.0 MB
Events in quadrant A3,288,348654,089
Events in quadrant B3,553,402661,139
Events in quadrant C3,329,178626,899
Events in quadrant D4,551,704607,948

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141280
B0149970
C0142470
D0179950

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6672620.929257%
B66731191.783306%
C66731121.678406%
D66732744.106099%

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 8772 6672 1 1 0.01% 0.01%
B 8773 6673 33 33 0.38% 0.49%
C 8773 6673 3 3 0.03% 0.04%
D 8773 6674 222 222 2.53% 3.33%

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 11441 62.35 850 833 170.1
A 3 137 7996 42.1 850 833 170.1
A 0 226 7253 37.73 850 833 170.1
B 3 64 191526 1184.35 844 821 161.0
B 0 230 25299 152.02 844 821 161.0
B 12 111 19792 117.82 844 821 161.0
C 14 238 129539 667.79 816 821 192.8
C 10 22 18278 90.57 816 821 192.8
C 13 61 5472 24.13 816 821 192.8
D 1 52 1238572 6395.4 807 787 193.5
D 7 80 69568 355.38 807 787 193.5
D 14 35 65554 334.64 807 787 193.5

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