ASTROSAT CZTI

Data Quality Report

Orbit 30821

Creation date: 2024-06-27T20:20:01.139787
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/AS1C06_003T01_9000004452_30821cztM0_level2.evt modeM0/AS1C06_003T01_9000004452_30821cztM0_level2_quad_clean.evt
Size (bytes)670,374,720118,802,880
Size639.3 MB 113.3 MB
Events in quadrant A3,708,698803,741
Events in quadrant B5,613,920800,931
Events in quadrant C3,489,651775,396
Events in quadrant D7,016,399729,729

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156031
B0218671
C0147071
D0258001

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70092413.438436%
B70102894.122682%
C70101862.653352%
D70106669.500713%

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 7359 7009 88 88 1.20% 1.26%
B 7360 7010 62 62 0.84% 0.88%
C 7360 7010 10 10 0.14% 0.14%
D 7360 7010 600 600 8.15% 8.56%

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 13 455140 2679.37 839 820 169.6
A 13 254 13431 74.37 839 820 169.6
A 0 31 12463 68.67 839 820 169.6
B 6 159 1961060 12391.61 827 806 158.2
B 5 172 207105 1304.1 827 806 158.2
B 0 190 47637 296.04 827 806 158.2
C 3 233 137571 730.83 801 805 187.1
C 14 238 129116 685.65 801 805 187.1
C 0 10 57449 302.69 801 805 187.1
D 8 195 1853199 9709.78 793 772 190.8
D 13 174 1136746 5954.38 793 772 190.8
D 12 218 366007 1914.44 793 772 190.8

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