ASTROSAT CZTI

Data Quality Report

Orbit 30975

Creation date: 2024-06-27T20:21:49.628419
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_071T42_9000004476_30975cztM0_level2.evt modeM0/AS1A10_071T42_9000004476_30975cztM0_level2_quad_clean.evt
Size (bytes)538,493,76095,800,320
Size513.5 MB 91.4 MB
Events in quadrant A3,205,571640,804
Events in quadrant B5,222,619649,400
Events in quadrant C3,709,743596,626
Events in quadrant D3,752,159583,133

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133932
B0194863
C0148632
D0152282

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6182621.002912%
B61811352.184113%
C61812644.271154%
D61811852.993043%

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 7467 6182 0 0 0.00% 0.00%
B 7466 6181 4 4 0.05% 0.06%
C 7466 6181 122 122 1.63% 1.97%
D 7466 6181 119 119 1.59% 1.93%

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 13 254 11169 62.86 831 818 164.7
A 3 137 7870 42.83 831 818 164.7
A 0 226 6961 37.31 831 818 164.7
B 6 159 1838169 11860.85 827 807 154.9
B 0 155 70907 452.52 827 807 154.9
B 12 111 18334 113.14 827 807 154.9
C 0 10 467927 2568.96 780 790 181.8
C 14 238 130650 714.15 780 790 181.8
C 3 233 32993 177.1 780 790 181.8
D 13 249 338003 1817.95 789 773 185.5
D 8 195 269649 1449.47 789 773 185.5
D 2 250 77374 412.94 789 773 185.5

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