ASTROSAT CZTI

Data Quality Report

Orbit 20171115_G08_009T01_9000001692_level2

Creation date: 2018-11-03T16:48:25.306875
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_009T01_9000001692cztM0_level2_bc.evt modeM0/AS1G08_009T01_9000001692cztM0_level2_quad_clean.evt
Size (bytes)2,693,828,160739,886,400
Size2.5 GB 705.6 MB
Events in quadrant A22,781,4454,572,743
Events in quadrant B19,631,6534,672,431
Events in quadrant C11,441,5824,699,106
Events in quadrant D23,684,6114,390,792

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01736610
B01559080
C01221430
D01665310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012120
B012120
C012120
D012120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5936837756.358644%
B5936829334.940372%
C593683580.603018%
D5936838646.508557%

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 122669 59366 106 106 0.09% 0.18%
B 122669 59370 11 11 0.01% 0.02%
C 122669 59374 0 0 0.00% 0.00%
D 122669 59372 660 660 0.54% 1.11%

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 5 10235261 16136.12 2928 2869 634.1
A 1 162 538759 845.08 2928 2869 634.1
A 9 143 381763 597.5 2928 2869 634.1
B 4 239 5595849 9903.58 2977 2897 564.7
B 15 204 1391396 2458.65 2977 2897 564.7
B 11 51 421510 741.25 2977 2897 564.7
C 13 61 17799 23.44 2920 2875 636.7
C 7 247 9248 10.01 2920 2875 636.7
C 12 4 8629 9.04 2920 2875 636.7
D 1 52 6301035 9394.33 2878 2771 670.4
D 13 137 2994967 4463.08 2878 2771 670.4
D 1 255 758153 1126.71 2878 2771 670.4

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