ASTROSAT CZTI

Data Quality Report

Orbit 20160421_G05_238T03_9000000424_level2

Creation date: 2016-09-06T17:51:11.207786
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/AS1G05_238T03_9000000424cztM0_level2_bc.evt modeM0/AS1G05_238T03_9000000424cztM0_level2_quad_clean.evt
Size (bytes)3,582,800,6401,083,372,480
Size3.3 GB 1.0 GB
Events in quadrant A20,275,9156,737,608
Events in quadrant B30,098,0536,578,483
Events in quadrant C20,912,3406,549,124
Events in quadrant D30,651,0956,334,988

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01984500
B02312750
C02021900
D02316240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05120
B05120
C05120
D05120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019760
B019760
C019760
D019760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A964841950.202106%
B9648419432.013805%
C964844820.499565%
D9648417421.805481%

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 145845 96484 18 18 0.01% 0.02%
B 145845 96483 228 228 0.16% 0.24%
C 145845 96482 80 80 0.05% 0.08%
D 145845 96484 680 680 0.47% 0.70%

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 8 15 1026888 1038.8 4526 4426 984.3
A 14 238 335316 336.18 4526 4426 984.3
A 0 50 264521 264.25 4526 4426 984.3
B 15 204 8958121 10452.36 4509 4385 856.6
B 0 230 1387176 1614.23 4509 4385 856.6
B 0 219 615819 713.77 4509 4385 856.6
C 14 223 1240051 1248.46 4405 4336 989.8
C 6 80 560499 561.9 4405 4336 989.8
C 1 16 403814 403.6 4405 4336 989.8
D 13 114 6210015 5627.02 4422 4260 1102.8
D 2 152 1906258 1724.62 4422 4260 1102.8
D 7 80 1716349 1552.42 4422 4260 1102.8

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