ASTROSAT CZTI

Data Quality Report

Orbit 46997

Creation date: 2024-06-27T23:30:31.101484
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/AS1C09_006T01_9000006294_46997cztM0_level2.fits modeM0/AS1C09_006T01_9000006294_46997cztM0_level2_quad_clean.evt
Size (bytes)764,982,72094,711,680
Size729.5 MB 90.3 MB
Events in quadrant A6,496,868750,940
Events in quadrant B14,005,387249,073
Events in quadrant C3,456,513734,987
Events in quadrant D3,849,350675,208

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0241541
B0460943
C0146701
D0158331

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65642674.067642%
B6563500476.245619%
C65641572.391834%
D65641592.422303%

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 7704 6565 6 6 0.08% 0.09%
B 7703 6563 4378 4378 56.83% 66.71%
C 7704 6565 103 103 1.34% 1.57%
D 7704 6564 102 102 1.32% 1.55%

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 10 83 3438122 21343.54 775 758 161.0
A 9 191 51535 315.29 775 758 161.0
A 13 254 11148 64.51 775 758 161.0
B 3 112 11436275 103195.98 564 548 110.8
B 4 171 182372 1640.78 564 548 110.8
B 0 198 103100 925.43 564 548 110.8
C 14 254 381628 2146.52 755 761 177.4
C 1 3 103880 581.17 755 761 177.4
C 3 233 12997 68.96 755 761 177.4
D 1 52 348411 1814.08 764 740 191.7
D 13 249 327996 1707.56 764 740 191.7
D 2 249 65695 338.92 764 740 191.7

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