ASTROSAT CZTI

Data Quality Report

Orbit 20161226_G06_168T10_9000000932_level2

Creation date: 2025-11-08T23:35:55.116102
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/AS1G06_168T10_9000000932cztM0_level2.fits modeM0/AS1G06_168T10_9000000932cztM0_level2_quad_clean.evt
Size (bytes)410,814,720428,742,720
Size391.8 MB 408.9 MB
Events in quadrant A2,465,6122,586,031
Events in quadrant B2,403,3022,621,048
Events in quadrant C2,462,5962,499,149
Events in quadrant D2,009,7982,179,813

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570
B0570
C0570
D0570

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09180
B09180
C09180
D09180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0992050
B0963510
C0929970
D01251620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4513610102.237682%
B451367551.672722%
C451363170.702322%
D4513636508.086671%

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 50906 45132 0 0 0.00% 0.00%
B 50906 45136 0 0 0.00% 0.00%
C 50906 45137 0 0 0.00% 0.00%
D 50906 45087 0 0 0.00% 0.00%

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 0 29 2355 10.59 640 594 166.3
A 7 110 2124 9.2 640 594 166.3
A 0 30 1840 7.49 640 594 166.3
B 2 9 2094 11.48 633 599 130.2
B 12 226 1706 8.5 633 599 130.2
B 3 17 1668 8.21 633 599 130.2
C 12 241 1800 6.92 649 598 173.7
C 1 80 1755 6.66 649 598 173.7
C 1 81 1739 6.57 649 598 173.7
D 3 14 1514 6.41 573 519 155.1
D 7 5 1447 5.98 573 519 155.1
D 11 82 1430 5.87 573 519 155.1

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