ASTROSAT CZTI

Data Quality Report

Orbit 20180505_G08_055T01_9000002076_level2

Creation date: 2018-05-09T11:32:18.096018
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/AS1G08_055T01_9000002076cztM0_level2_bc.evt modeM0/AS1G08_055T01_9000002076cztM0_level2_quad_clean.evt
Size (bytes)4,058,202,2401,638,057,600
Size3.8 GB 1.5 GB
Events in quadrant A28,477,88611,004,970
Events in quadrant B30,173,21311,002,188
Events in quadrant C21,225,95610,743,178
Events in quadrant D36,467,06610,260,048

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019560
B019560
C019560
D019560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01570
B01570
C01570
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02252060
B02352370
C02008240
D02527600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9645023262.411612%
B9645037193.855884%
C964508570.888543%
D9645025422.635562%

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 112082 96449 312 312 0.28% 0.32%
B 112082 96442 377 377 0.34% 0.39%
C 112082 96459 13 13 0.01% 0.01%
D 112082 96449 178 178 0.16% 0.18%

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 15 222 6150559 5382.6 5196 5124 1141.7
A 12 189 1270301 1108.13 5196 5124 1141.7
A 9 143 586685 509.37 5196 5124 1141.7
B 10 16 6147052 6353.83 5195 5094 966.7
B 3 209 570231 584.63 5195 5094 966.7
B 0 189 561494 575.59 5195 5094 966.7
C 3 233 1063850 950.62 5019 4990 1113.9
C 0 207 421740 374.15 5019 4990 1113.9
C 10 22 44772 35.72 5019 4990 1113.9
D 1 52 4191990 3493.33 4977 4857 1198.6
D 10 172 2683904 2235.13 4977 4857 1198.6
D 12 110 2474846 2060.71 4977 4857 1198.6

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