ASTROSAT CZTI

Data Quality Report

Orbit 44362

Creation date: 2024-06-27T23:02:40.712230
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_44362cztM0_level2.fits modeM0/AS1A13_008T06_9000005994_44362cztM0_level2_quad_clean.evt
Size (bytes)608,094,720122,063,040
Size579.9 MB 116.4 MB
Events in quadrant A7,491,839782,535
Events in quadrant B4,050,131854,978
Events in quadrant C3,888,609817,557
Events in quadrant D6,480,854704,249

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0281662
B0172222
C0171242
D0245822

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77187699.963721%
B77181572.034206%
C7718871.127235%
D77197059.133307%

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 7748 7719 517 517 6.67% 6.70%
B 7748 7719 37 37 0.48% 0.48%
C 7748 7718 49 49 0.63% 0.63%
D 7749 7719 545 545 7.03% 7.06%

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 1862525 10272.67 868 848 181.2
A 13 248 1186672 6543.34 868 848 181.2
A 15 223 998676 5505.98 868 848 181.2
B 10 245 167305 946.16 892 863 175.9
B 5 255 130867 739.03 892 863 175.9
B 5 172 59486 333.25 892 863 175.9
C 14 254 335759 1625.0 868 870 206.1
C 14 96 53313 254.47 868 870 206.1
C 0 207 45791 217.97 868 870 206.1
D 4 221 851368 4025.31 836 812 211.3
D 1 52 725277 3428.58 836 812 211.3
D 5 222 468423 2213.0 836 812 211.3

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