ASTROSAT CZTI

Data Quality Report

Orbit 20221018_A07_093T02_9000005368_level2

Creation date: 2022-10-21T16:27:46.834053
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/AS1A07_093T02_9000005368cztM0_level2.fits modeM0/AS1A07_093T02_9000005368cztM0_level2_quad_clean.evt
Size (bytes)167,328,000171,293,760
Size159.6 MB 163.4 MB
Events in quadrant A999,2361,017,291
Events in quadrant B932,4821,016,906
Events in quadrant C994,290980,858
Events in quadrant D846,878877,561

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03840
B03840
C03840
D03840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0397630
B0445810
C0380980
D0534240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18786210.111785%
B187868524.535292%
C18786130.069200%
D187864922.618972%

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 24967 18786 0 0 0.00% 0.00%
B 24967 18732 0 0 0.00% 0.00%
C 24967 18786 0 0 0.00% 0.00%
D 24967 18775 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 29 868 9.39 260 245 66.4
A 7 110 857 9.22 260 245 66.4
A 14 95 808 8.48 260 245 66.4
B 2 9 816 11.28 247 236 51.4
B 3 80 697 8.96 247 236 51.4
B 5 128 667 8.38 247 236 51.4
C 1 81 817 8.38 263 246 68.1
C 1 80 795 8.06 263 246 68.1
C 3 187 692 6.55 263 246 68.1
D 10 113 651 6.49 242 220 66.4
D 10 189 636 6.27 242 220 66.4
D 6 67 625 6.1 242 220 66.4

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