ASTROSAT CZTI

Data Quality Report

Orbit 45689

Creation date: 2024-06-27T23:15:04.575081
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_071T05_9000006120_45689cztM0_level2.fits modeM0/AS1A13_071T05_9000006120_45689cztM0_level2_quad_clean.evt
Size (bytes)752,489,28095,172,480
Size717.6 MB 90.8 MB
Events in quadrant A5,883,765735,644
Events in quadrant B3,260,590770,823
Events in quadrant C13,820,178250,156
Events in quadrant D4,378,578665,012

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215232
B0139612
C0455842
D0173322

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65962373.593087%
B65961151.743481%
C6596464270.375985%
D65962563.881140%

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 7676 6596 2 2 0.03% 0.03%
B 7676 6596 12 12 0.16% 0.18%
C 7676 6596 4407 4407 57.41% 66.81%
D 7676 6596 124 124 1.62% 1.88%

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 2879735 17917.87 771 757 160.7
A 9 191 9793 56.24 771 757 160.7
A 13 254 9385 53.7 771 757 160.7
B 5 172 75908 499.0 774 751 150.6
B 3 112 40478 263.76 774 751 150.6
B 15 35 24833 159.89 774 751 150.6
C 9 54 11387170 81701.83 594 596 139.4
C 14 254 70754 503.4 594 596 139.4
C 3 233 34121 240.55 594 596 139.4
D 1 52 670954 3553.55 753 731 188.6
D 13 249 369501 1955.23 753 731 188.6
D 11 241 236968 1252.54 753 731 188.6

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