ASTROSAT CZTI

Data Quality Report

Orbit 20190507_A05_175T01_9000002894_level2

Creation date: 2019-05-09T11:37:17.356832
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_175T01_9000002894cztM0_level2_bc.evt modeM0/AS1A05_175T01_9000002894cztM0_level2_quad_clean.evt
Size (bytes)3,995,496,0001,215,855,360
Size3.7 GB 1.1 GB
Events in quadrant A19,687,0397,968,836
Events in quadrant B21,096,9858,002,221
Events in quadrant C21,531,7757,620,753
Events in quadrant D52,205,3726,708,120

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01969660
B02012140
C02034040
D03120790

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019420
B019420
C019420
D019420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9517811891.249238%
B9517817311.818698%
C9517819802.080313%
D951781358114.269054%

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 109309 95175 2 2 0.00% 0.00%
B 109309 95176 135 135 0.12% 0.14%
C 109309 95176 40 40 0.04% 0.04%
D 109308 95172 5683 5683 5.20% 5.97%

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 13 254 90711 77.79 5072 4979 1102.1
A 11 47 82632 70.46 5072 4979 1102.1
A 4 2 51083 41.83 5072 4979 1102.1
B 3 64 822178 857.12 5079 4951 953.5
B 0 198 262264 269.87 5079 4951 953.5
B 4 171 127181 128.2 5079 4951 953.5
C 3 233 1519016 1341.95 4836 4810 1128.4
C 9 221 512674 450.09 4836 4810 1128.4
C 5 112 504360 442.72 4836 4810 1128.4
D 7 238 24598768 22987.49 4639 4475 1069.9
D 1 52 4751422 4436.82 4639 4475 1069.9
D 12 218 3257966 3040.93 4639 4475 1069.9

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