ASTROSAT CZTI

Data Quality Report

Orbit 46240

Creation date: 2024-06-27T23:20:42.300392
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_065T07_9000006188_46240cztM0_level2.fits modeM0/AS1A13_065T07_9000006188_46240cztM0_level2_quad_clean.evt
Size (bytes)490,216,320111,081,600
Size467.5 MB 105.9 MB
Events in quadrant A6,253,252729,112
Events in quadrant B4,161,363762,362
Events in quadrant C3,688,135734,526
Events in quadrant D3,526,659672,619

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0226321
B0167591
C0153501
D0150731

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66661892.835284%
B6666771.155116%
C6666681.020102%
D66661111.665167%

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 7681 6666 10 10 0.13% 0.15%
B 7681 6666 9 9 0.12% 0.14%
C 7681 6666 19 19 0.25% 0.29%
D 7681 6666 75 75 0.98% 1.13%

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 3088951 19475.28 762 745 158.6
A 0 247 197834 1242.91 762 745 158.6
A 0 226 16550 99.67 762 745 158.6
B 3 112 1057742 7147.56 754 734 147.9
B 0 156 32851 217.18 754 734 147.9
B 0 155 21237 138.64 754 734 147.9
C 11 16 624039 3534.23 747 753 176.4
C 12 2 66853 374.81 747 753 176.4
C 3 9 53878 301.24 747 753 176.4
D 1 52 303775 1600.04 753 730 189.4
D 13 249 79324 414.96 753 730 189.4
D 2 249 78886 412.65 753 730 189.4

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