ASTROSAT CZTI

Data Quality Report

Orbit 20180412_G08_039T01_9000002036_level2

Creation date: 2025-11-21T17:23:26.204134
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_039T01_9000002036cztM0_level2.fits modeM0/AS1G08_039T01_9000002036cztM0_level2_quad_clean.evt
Size (bytes)215,081,280207,823,680
Size205.1 MB 198.2 MB
Events in quadrant A1,304,5701,242,510
Events in quadrant B1,254,0061,313,884
Events in quadrant C1,277,6781,136,678
Events in quadrant D1,115,0021,038,751

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0476610
B0509690
C0478590
D0499300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04620
B04620
C04620
D04620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A226866903.041523%
B226867973.513180%
C226865022.212818%
D226865672.499339%

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 24096 22685 0 0 0.00% 0.00%
B 24096 22686 0 0 0.00% 0.00%
C 24096 22686 0 0 0.00% 0.00%
D 24096 22686 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 1274 10.92 338 313 88.0
A 0 29 1246 10.6 338 313 88.0
A 14 204 1116 9.13 338 313 88.0
B 2 9 1088 11.42 330 314 67.8
B 5 225 859 8.04 330 314 67.8
B 3 17 852 7.94 330 314 67.8
C 12 241 921 6.87 337 313 88.4
C 3 126 904 6.68 337 313 88.4
C 9 233 872 6.32 337 313 88.4
D 7 5 860 6.52 317 287 87.9
D 3 31 795 5.78 317 287 87.9
D 3 159 791 5.74 317 287 87.9

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