ASTROSAT CZTI

Data Quality Report

Orbit 20190901_A05_037T01_9000003140_level2

Creation date: 2019-09-29T06:21:19.047941
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/AS1A05_037T01_9000003140cztM0_level2_bc.evt modeM0/AS1A05_037T01_9000003140cztM0_level2_quad_clean.evt
Size (bytes)10,369,373,7603,120,333,120
Size9.7 GB 2.9 GB
Events in quadrant A54,715,08520,306,443
Events in quadrant B56,628,95520,485,911
Events in quadrant C48,806,55419,913,233
Events in quadrant D137,830,54117,636,858

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03840
B03840
C03840
D03840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05083460
B05196240
C04966450
D08407820

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A048180
B048180
C048180
D048180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A23598532681.384834%
B23598745801.940785%
C23598738861.646701%
D2359863476614.732230%

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 282498 235965 145 145 0.05% 0.06%
B 282498 235969 204 204 0.07% 0.09%
C 282498 235975 23 23 0.01% 0.01%
D 282498 235950 7284 7284 2.58% 3.09%

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 5 16 1827455 657.65 12810 12591 2759.6
A 15 236 1621337 582.96 12810 12591 2759.6
A 12 96 748070 266.51 12810 12591 2759.6
B 0 189 1643404 669.7 12876 12553 2435.2
B 3 64 1294414 526.39 12876 12553 2435.2
B 10 245 857907 347.14 12876 12553 2435.2
C 0 207 850406 293.03 12305 12258 2860.3
C 3 233 422538 143.44 12305 12258 2860.3
C 0 10 187605 61.3 12305 12258 2860.3
D 13 174 27480953 10085.94 11685 11300 2723.6
D 1 239 24087068 8839.82 11685 11300 2723.6
D 1 52 12221007 4483.0 11685 11300 2723.6

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