ASTROSAT CZTI

Data Quality Report

Orbit 12134

Creation date: 2024-06-27T16:22:52.012135
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/AS1G08_065T01_9000001796_12134cztM0_level2.evt modeM0/AS1G08_065T01_9000001796_12134cztM0_level2_quad_clean.evt
Size (bytes)723,349,440111,263,040
Size689.8 MB 106.1 MB
Events in quadrant A7,066,000688,099
Events in quadrant B5,950,838708,860
Events in quadrant C3,656,736731,078
Events in quadrant D4,705,209698,247

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265023
B0231052
C0164802
D0195082

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7805103213.222293%
B78057739.903908%
C7805650.832799%
D78052413.087764%

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 8141 7808 740 740 9.09% 9.48%
B 8141 7808 381 381 4.68% 4.88%
C 8141 7808 2 2 0.02% 0.03%
D 8141 7808 158 158 1.94% 2.02%

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 14 63 3344620 18206.03 900 879 183.7
A 1 162 62918 337.79 900 879 183.7
A 2 79 55322 296.43 900 879 183.7
B 4 239 925628 5281.48 910 887 175.1
B 3 64 653228 3725.72 910 887 175.1
B 10 16 412152 2348.86 910 887 175.1
C 15 208 60700 280.1 918 921 213.4
C 13 250 8070 33.5 918 921 213.4
C 13 61 6839 27.73 918 921 213.4
D 1 52 530107 2425.15 904 877 218.2
D 9 85 244357 1115.73 904 877 218.2
D 8 195 194760 888.45 904 877 218.2

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