ASTROSAT CZTI

Data Quality Report

Orbit 46892

Creation date: 2024-06-27T23:29:10.284749
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_068T13_9000006278_46892cztM0_level2.fits modeM0/AS1A13_068T13_9000006278_46892cztM0_level2_quad_clean.evt
Size (bytes)655,162,56095,929,920
Size624.8 MB 91.5 MB
Events in quadrant A6,499,078680,058
Events in quadrant B9,870,255475,132
Events in quadrant C2,875,856685,065
Events in quadrant D4,503,381611,040

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237344
B0338081
C0134391
D0177111

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64953465.327175%
B6495263440.554273%
C6496891.370074%
D64963044.679803%

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 7465 6495 110 110 1.47% 1.69%
B 7465 6496 2138 2138 28.64% 32.91%
C 7466 6497 7 7 0.09% 0.11%
D 7466 6497 217 217 2.91% 3.34%

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 3343385 22441.36 717 701 149.0
A 13 248 320050 2143.97 717 701 149.0
A 9 191 50461 334.06 717 701 149.0
B 3 112 6695653 56036.28 606 584 119.5
B 5 255 255402 2132.77 606 584 119.5
B 15 36 250871 2094.84 606 584 119.5
C 15 208 63919 379.41 712 716 166.6
C 14 254 15813 90.63 712 716 166.6
C 3 233 10852 60.85 712 716 166.6
D 13 249 788084 4436.08 704 679 177.5
D 1 52 376348 2116.44 704 679 177.5
D 14 49 317914 1787.24 704 679 177.5

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