ASTROSAT CZTI

Data Quality Report

Orbit 30277

Creation date: 2024-06-27T20:13:01.206502
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/AS1A10_007T01_9000004350_30277cztM0_level2.evt modeM0/AS1A10_007T01_9000004350_30277cztM0_level2_quad_clean.evt
Size (bytes)565,306,56084,150,720
Size539.1 MB 80.3 MB
Events in quadrant A3,773,611524,044
Events in quadrant B5,331,091530,863
Events in quadrant C3,714,198516,505
Events in quadrant D3,849,682511,778

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155552
B0205942
C0151222
D0160382

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66752764.134831%
B66751682.516854%
C66752353.520599%
D66761121.677651%

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 8570 6676 160 160 1.87% 2.40%
B 8570 6675 16 16 0.19% 0.24%
C 8570 6675 4 4 0.05% 0.06%
D 8571 6678 44 44 0.51% 0.66%

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 518987 3073.17 835 816 168.6
A 8 192 25067 143.83 835 816 168.6
A 13 254 12305 68.14 835 816 168.6
B 6 159 1887374 11717.87 842 822 161.0
B 0 229 48169 294.08 842 822 161.0
B 0 190 43181 263.1 842 822 161.0
C 3 233 315520 1622.63 817 822 193.9
C 14 238 150928 773.97 817 822 193.9
C 14 254 29049 145.54 817 822 193.9
D 8 195 298269 1438.02 823 803 206.9
D 12 233 147082 707.15 823 803 206.9
D 13 249 79397 379.94 823 803 206.9

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