ASTROSAT CZTI

Data Quality Report

Orbit 44353

Creation date: 2024-06-27T23:02:33.545139
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_008T06_9000005994_44353cztM0_level2.fits modeM0/AS1A13_008T06_9000005994_44353cztM0_level2_quad_clean.evt
Size (bytes)627,966,720104,299,200
Size598.9 MB 99.5 MB
Events in quadrant A10,613,587533,884
Events in quadrant B3,891,222755,900
Events in quadrant C3,476,374732,589
Events in quadrant D4,730,743655,619

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0363101
B0158902
C0149692
D0185952

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6874233433.954030%
B68751952.836364%
C6875881.280000%
D68752964.305455%

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 7759 6874 2045 2045 26.36% 29.75%
B 7760 6875 83 83 1.07% 1.21%
C 7760 6875 38 38 0.49% 0.55%
D 7760 6875 231 231 2.98% 3.36%

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 4945368 33340.99 715 700 148.3
A 10 83 1570159 10582.57 715 700 148.3
A 13 248 1259940 8490.82 715 700 148.3
B 5 255 303102 1945.07 784 762 155.4
B 5 172 173196 1109.33 784 762 155.4
B 4 170 80987 516.12 784 762 155.4
C 14 254 299031 1617.24 774 780 184.4
C 3 233 51729 276.27 774 780 184.4
C 14 220 39751 211.32 774 780 184.4
D 13 249 678195 3495.94 765 741 193.8
D 1 52 217366 1117.87 765 741 193.8
D 2 153 195294 1003.97 765 741 193.8

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