ASTROSAT CZTI

Data Quality Report

Orbit 20191107_A07_018T02_9000003288_level2

Creation date: 2019-11-11T16:45:11.604114
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A07_018T02_9000003288cztM0_level2_bc.evt modeM0/AS1A07_018T02_9000003288cztM0_level2_quad_clean.evt
Size (bytes)342,296,640126,659,520
Size326.4 MB 120.8 MB
Events in quadrant A2,245,085800,071
Events in quadrant B2,260,853820,838
Events in quadrant C2,075,497771,318
Events in quadrant D3,090,683744,946

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210350
B0211440
C0208880
D0237530

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02060
B02060
C02060
D02060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10085420.416460%
B10085640.634606%
C10085750.743679%
D10085630.624690%

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 11244 10084 2 2 0.02% 0.02%
B 11244 10084 0 0 0.00% 0.00%
C 11244 10084 0 0 0.00% 0.00%
D 11244 10084 2 2 0.02% 0.02%

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 4 2 90615 738.02 558 546 122.0
A 13 254 14963 118.13 558 546 122.0
A 0 226 3555 24.66 558 546 122.0
B 0 219 31776 289.26 568 555 107.9
B 4 173 30023 273.02 568 555 107.9
B 4 216 25281 229.08 568 555 107.9
C 0 10 14022 107.26 536 532 125.8
C 13 61 3140 20.74 536 532 125.8
C 4 175 2461 15.34 536 532 125.8
D 2 16 910456 7185.77 542 523 126.6
D 2 234 36722 285.86 542 523 126.6
D 1 52 35785 278.47 542 523 126.6

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