ASTROSAT CZTI

Data Quality Report

Orbit 35228

Creation date: 2022-04-04T19:53:55.117960
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/AS1C07_004T01_9000005052_35228cztM0_level2.evt modeM0/AS1C07_004T01_9000005052_35228cztM0_level2_quad_clean.evt
Size (bytes)851,993,28051,428,160
Size812.5 MB 49.0 MB
Events in quadrant A2,712,010332,054
Events in quadrant B8,161,806267,253
Events in quadrant C3,351,295337,781
Events in quadrant D11,198,952224,892

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115763
B0281272
C0132012
D0371402

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A562680.142197%
B5626211837.646641%
C56261252.221827%
D5626293252.115180%

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 7268 5627 0 0 0.00% 0.00%
B 7268 5626 1419 1419 19.52% 25.22%
C 7268 5627 98 98 1.35% 1.74%
D 7268 5626 2779 2779 38.24% 49.40%

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 10 83 102141 757.84 658 645 133.9
A 13 6 19108 137.86 658 645 133.9
A 9 143 10767 75.58 658 645 133.9
B 5 236 5316100 48667.58 569 552 109.2
B 5 172 546211 4995.89 569 552 109.2
B 5 200 26648 238.93 569 552 109.2
C 0 10 327786 2230.8 636 639 146.6
C 15 214 236750 1610.03 636 639 146.6
C 1 23 178133 1210.32 636 639 146.6
D 8 195 4887007 39505.01 507 494 123.7
D 7 80 1719694 13898.87 507 494 123.7
D 8 230 1253086 10126.58 507 494 123.7

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