ASTROSAT CZTI

Data Quality Report

Orbit 02479

Creation date: 2024-06-27T14:18:21.991743
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/AS1G02_018T06_9000000370_02479cztM0_level2.evt modeM0/AS1G02_018T06_9000000370_02479cztM0_level2_quad_clean.evt
Size (bytes)457,865,28090,230,400
Size436.7 MB 86.1 MB
Events in quadrant A3,303,823552,873
Events in quadrant B3,406,433569,611
Events in quadrant C3,288,935565,799
Events in quadrant D3,381,559547,195

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149111
B0150100
C0149120
D0153330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71392193.067657%
B71392142.997619%
C71391161.624877%
D71391401.961059%

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 7139 7139 0 0 0.00% 0.00%
B 7139 7139 0 0 0.00% 0.00%
C 7139 7139 0 0 0.00% 0.00%
D 7139 7139 9 9 0.13% 0.13%

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 12 194 9669 49.75 856 834 177.6
A 0 226 9034 46.18 856 834 177.6
A 8 15 6799 33.59 856 834 177.6
B 10 244 17572 99.19 868 845 168.6
B 4 48 14003 78.03 868 845 168.6
B 12 111 13053 72.4 868 845 168.6
C 14 223 26646 132.44 830 833 194.9
C 13 61 7316 33.26 830 833 194.9
C 0 64 5752 25.24 830 833 194.9
D 2 184 144305 723.08 825 803 198.5
D 5 172 61331 304.99 825 803 198.5
D 9 64 15529 74.2 825 803 198.5

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