ASTROSAT CZTI

Data Quality Report

Orbit 46984

Creation date: 2024-06-27T23:30:18.581398
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_071T08_9000006292_46984cztM0_level2.fits modeM0/AS1A13_071T08_9000006292_46984cztM0_level2_quad_clean.evt
Size (bytes)768,957,12094,063,680
Size733.3 MB 89.7 MB
Events in quadrant A6,508,758700,258
Events in quadrant B12,065,341395,967
Events in quadrant C3,563,175695,189
Events in quadrant D5,821,668600,896

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237701
B0404144
C0154511
D0218641

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65332624.010409%
B6532362855.541947%
C65322353.597673%
D65336369.735191%

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 7528 6534 25 25 0.33% 0.38%
B 7527 6533 2901 2901 38.54% 44.41%
C 7527 6533 207 207 2.75% 3.17%
D 7528 6534 575 575 7.64% 8.80%

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 3559715 23861.81 724 709 149.2
A 0 243 51364 339.62 724 709 149.2
A 9 191 42434 279.75 724 709 149.2
B 3 112 9397016 79204.44 605 586 118.6
B 4 171 103895 870.81 605 586 118.6
B 7 219 51994 433.33 605 586 118.6
C 12 2 579179 3495.92 706 709 165.5
C 14 254 199599 1201.97 706 709 165.5
C 1 3 15629 90.17 706 709 165.5
D 13 249 1706910 10066.36 684 662 169.5
D 1 52 824664 4861.37 684 662 169.5
D 1 47 318605 1875.77 684 662 169.5

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