ASTROSAT CZTI

Data Quality Report

Orbit 20161221_G06_135T01_9000000908_level2

Creation date: 2017-09-22T14:27:45.882687
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/AS1G06_135T01_9000000908cztM0_level2.evt modeM0/AS1G06_135T01_9000000908cztM0_level2_quad_clean.evt
Size (bytes)684,720,000111,421,440
Size653.0 MB 106.3 MB
Events in quadrant A3,933,671735,010
Events in quadrant B4,199,827742,176
Events in quadrant C3,907,343722,826
Events in quadrant D8,115,151579,203

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176630
B0182090
C0176900
D0300800

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85601131.320093%
B85601461.705607%
C8560941.098131%
D8560166319.427570%

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 10520 8562 0 0 0.00% 0.00%
B 10520 8562 23 23 0.22% 0.27%
C 10520 8562 2 2 0.02% 0.02%
D 10520 8562 1372 1372 13.04% 16.02%

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 8 15 16296 74.67 1009 987 205.0
A 0 226 9777 42.87 1009 987 205.0
A 12 194 9361 40.84 1009 987 205.0
B 0 214 105472 539.19 1015 991 193.8
B 4 80 45214 228.22 1015 991 193.8
B 4 81 28886 143.96 1015 991 193.8
C 9 247 74120 322.84 976 981 226.5
C 1 3 11062 44.5 976 981 226.5
C 9 221 10415 41.64 976 981 226.5
D 2 33 4514282 20970.95 881 853 215.2
D 2 63 94522 435.22 881 853 215.2
D 2 152 72309 332.01 881 853 215.2

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