ASTROSAT CZTI

Data Quality Report

Orbit 20252

Creation date: 2024-06-27T18:13:03.419687
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/AS1A05_117T01_9000003002_20252cztM0_level2.evt modeM0/AS1A05_117T01_9000003002_20252cztM0_level2_quad_clean.evt
Size (bytes)554,944,32080,159,040
Size529.2 MB 76.4 MB
Events in quadrant A3,559,057503,490
Events in quadrant B3,838,049504,668
Events in quadrant C3,863,236476,176
Events in quadrant D5,085,060469,002

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145671
B0153911
C0154741
D0194451

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6800921.352941%
B68011622.382003%
C68011181.735039%
D68016118.983973%

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 7790 6801 3 3 0.04% 0.04%
B 7791 6802 44 44 0.56% 0.65%
C 7791 6802 0 0 0.00% 0.00%
D 7791 6802 414 414 5.31% 6.09%

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 10 253 104404 590.16 869 851 175.5
A 4 2 65997 371.28 869 851 175.5
A 14 238 37021 206.14 869 851 175.5
B 7 220 327036 2029.27 853 832 160.7
B 0 85 51800 317.06 853 832 160.7
B 0 197 25109 151.02 853 832 160.7
C 3 9 470510 2435.34 822 828 192.9
C 14 238 128848 663.8 822 828 192.9
C 3 233 46000 234.22 822 828 192.9
D 1 52 1351693 6933.15 804 785 194.8
D 7 238 199497 1019.83 804 785 194.8
D 15 0 183614 938.32 804 785 194.8

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