ASTROSAT CZTI

Data Quality Report

Orbit 20161221_G06_102T01_9000000912_level2

Creation date: 2025-11-08T20:36:37.853616
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_102T01_9000000912cztM0_level2.fits modeM0/AS1G06_102T01_9000000912cztM0_level2_quad_clean.evt
Size (bytes)516,669,120532,915,200
Size492.7 MB 508.2 MB
Events in quadrant A3,099,3403,198,420
Events in quadrant B3,026,8483,193,441
Events in quadrant C3,115,5383,081,162
Events in quadrant D2,400,3682,666,572

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011860
B011860
C011860
D011860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01399350
B01278830
C01221890
D02113480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5831616232.783113%
B5830911872.035706%
C583227331.256816%
D58320935116.033951%

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 64931 58333 0 0 0.00% 0.00%
B 64931 58322 0 0 0.00% 0.00%
C 64931 58337 0 0 0.00% 0.00%
D 64931 57917 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 14 188 3203 11.73 804 746 209.4
A 0 29 3063 11.06 804 746 209.4
A 14 204 2748 9.56 804 746 209.4
B 2 9 2621 11.42 798 756 163.3
B 12 226 2162 8.61 798 756 163.3
B 14 254 2153 8.56 798 756 163.3
C 1 80 2306 7.07 822 757 219.1
C 1 81 2280 6.95 822 757 219.1
C 12 241 2242 6.78 822 757 219.1
D 7 5 1769 6.1 686 618 188.8
D 4 160 1753 6.01 686 618 188.8
D 3 14 1739 5.94 686 618 188.8

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