ASTROSAT CZTI

Data Quality Report

Orbit 20160416_G05_238T05_9000000418_level2

Creation date: 2018-05-17T05:02:47.705579
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_238T05_9000000418cztM0_level2.evt modeM0/AS1G05_238T05_9000000418cztM0_level2_quad_clean.evt
Size (bytes)7,509,401,2801,143,576,000
Size7.0 GB 1.1 GB
Events in quadrant A69,137,1007,022,971
Events in quadrant B57,810,7337,204,002
Events in quadrant C42,332,7957,202,882
Events in quadrant D52,044,4966,993,173

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02675530
B02338990
C01915070
D02200650

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018540
B018540
C018540
D018540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04890
B04890
C04890
D04900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9063954796.044859%
B9063938854.286234%
C906397250.799876%
D9063914001.544589%

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 135816 90662 4233 4233 3.12% 4.67%
B 135816 90662 3525 3525 2.60% 3.89%
C 135816 90662 615 615 0.45% 0.68%
D 135816 90662 1319 1319 0.97% 1.45%

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 9 23504161 12275.72 9550 9349 1913.9
A 14 249 2944154 1533.4 9550 9349 1913.9
A 12 247 2449273 1274.83 9550 9349 1913.9
B 15 204 8736030 4690.52 9811 9588 1860.4
B 8 3 3133558 1679.15 9811 9588 1860.4
B 2 249 2285218 1223.17 9811 9588 1860.4
C 0 219 2389964 1076.73 9512 9548 2210.8
C 6 80 1162715 521.61 9512 9548 2210.8
C 1 192 838742 375.07 9512 9548 2210.8
D 13 114 5945203 2432.15 9429 9198 2440.6
D 1 31 1937159 789.94 9429 9198 2440.6
D 7 80 1221123 496.56 9429 9198 2440.6

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