ASTROSAT CZTI

Data Quality Report

Orbit 20180610_G08_059T01_9000002150_level2

Creation date: 2025-11-22T19:50:23.118042
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/AS1G08_059T01_9000002150cztM0_level2.fits modeM0/AS1G08_059T01_9000002150cztM0_level2_quad_clean.evt
Size (bytes)233,055,360207,354,240
Size222.3 MB 197.7 MB
Events in quadrant A1,400,7601,205,832
Events in quadrant B1,361,3081,184,664
Events in quadrant C1,387,3341,126,756
Events in quadrant D1,219,2261,072,290

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0578270
B0519220
C0602470
D0543560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05000
B05000
C05000
D05000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A245545352.178871%
B245543431.396921%
C245542010.818604%
D245543861.572045%

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 27189 24555 0 0 0.00% 0.00%
B 27189 24555 0 0 0.00% 0.00%
C 27189 24554 0 0 0.00% 0.00%
D 27189 24554 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 1373 11.16 364 339 92.6
A 7 110 1168 8.94 364 339 92.6
A 15 236 1108 8.29 364 339 92.6
B 2 9 1174 11.27 359 341 73.9
B 3 17 935 8.04 359 341 73.9
B 5 128 911 7.71 359 341 73.9
C 1 80 1024 7.1 366 341 96.2
C 1 81 983 6.67 366 341 96.2
C 12 241 953 6.36 366 341 96.2
D 3 14 910 6.28 347 314 94.9
D 7 3 877 5.93 347 314 94.9
D 6 231 868 5.84 347 314 94.9

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