ASTROSAT CZTI

Data Quality Report

Orbit 45531

Creation date: 2024-06-27T23:13:17.250831
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/AS1A13_071T01_9000006104_45531cztM0_level2.fits modeM0/AS1A13_071T01_9000006104_45531cztM0_level2_quad_clean.evt
Size (bytes)489,337,920108,938,880
Size466.7 MB 103.9 MB
Events in quadrant A5,432,874739,298
Events in quadrant B3,149,916776,041
Events in quadrant C3,393,260718,154
Events in quadrant D5,644,019621,711

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205581
B0135781
C0146331
D0212461

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63592253.538292%
B63601221.918239%
C63602153.380503%
D63605749.025157%

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 7534 6360 28 28 0.37% 0.44%
B 7535 6361 22 22 0.29% 0.35%
C 7535 6361 125 125 1.66% 1.97%
D 7535 6361 459 459 6.09% 7.22%

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 10 83 2482332 16431.19 736 723 151.0
A 13 248 104447 686.78 736 723 151.0
A 3 137 8257 49.88 736 723 151.0
B 5 172 162260 1130.33 738 716 142.9
B 0 155 30684 209.69 738 716 142.9
B 0 183 23426 158.9 738 716 142.9
C 12 2 423717 2542.14 709 713 166.4
C 14 254 142218 850.41 709 713 166.4
C 2 14 60894 361.67 709 713 166.4
D 1 52 1793091 10432.99 687 667 171.8
D 13 249 401307 2331.97 687 667 171.8
D 5 171 362460 2105.85 687 667 171.8

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