ASTROSAT CZTI

Data Quality Report

Orbit 09871

Creation date: 2024-06-27T15:51:40.067121
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/AS1A03_117T06_9000001404_09871cztM0_level2.evt modeM0/AS1A03_117T06_9000001404_09871cztM0_level2_quad_clean.evt
Size (bytes)428,204,16085,582,080
Size408.4 MB 81.6 MB
Events in quadrant A2,910,435547,508
Events in quadrant B3,115,269569,714
Events in quadrant C2,980,932543,259
Events in quadrant D3,553,397511,939

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124539
B01303812
C0128088
D01470017

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6005200.333056%
B6003691.149425%
C6005320.532889%
D60041302.165223%

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 7368 6009 1 1 0.01% 0.02%
B 7368 6009 29 29 0.39% 0.48%
C 7368 6009 8 8 0.11% 0.13%
D 7368 6009 98 98 1.33% 1.63%

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 13 251 18325 115.7 751 737 152.0
A 0 226 6857 40.26 751 737 152.0
A 12 194 5908 34.02 751 737 152.0
B 4 81 165677 1155.29 758 742 142.8
B 12 111 16599 111.07 758 742 142.8
B 11 111 13516 89.48 758 742 142.8
C 9 236 118936 703.45 731 738 168.0
C 13 61 5586 28.85 731 738 168.0
C 14 234 3666 17.43 731 738 168.0
D 1 52 672230 3637.59 707 693 184.6
D 10 172 73346 393.55 707 693 184.6
D 2 14 40924 217.92 707 693 184.6

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