ASTROSAT CZTI

Data Quality Report

Orbit 20161124_G06_168T04_9000000820_level2

Creation date: 2025-11-07T22:05:11.892669
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_168T04_9000000820cztM0_level2.fits modeM0/AS1G06_168T04_9000000820cztM0_level2_quad_clean.evt
Size (bytes)174,654,720181,077,120
Size166.6 MB 172.7 MB
Events in quadrant A1,043,1461,098,975
Events in quadrant B1,014,2021,090,237
Events in quadrant C1,038,9281,066,802
Events in quadrant D805,042840,643

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04080
B04080
C04080
D04080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410750
B0436200
C0406170
D0684570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A201361350.670441%
B201363261.618991%
C20136940.466826%
D20136331116.443186%

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 22552 20134 0 0 0.00% 0.00%
B 22552 20129 0 0 0.00% 0.00%
C 22552 20133 0 0 0.00% 0.00%
D 22552 20004 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 1021 10.95 270 253 70.1
A 0 29 1012 10.82 270 253 70.1
A 14 204 916 9.45 270 253 70.1
B 2 9 913 11.69 267 253 56.4
B 12 226 756 8.91 267 253 56.4
B 14 254 716 8.2 267 253 56.4
C 12 241 777 6.94 273 252 75.6
C 1 81 773 6.89 273 252 75.6
C 1 80 761 6.73 273 252 75.6
D 11 82 605 6.18 229 209 64.0
D 1 19 597 6.06 229 209 64.0
D 6 231 590 5.95 229 209 64.0

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