ASTROSAT CZTI

Data Quality Report

Orbit 20180803_G08_072T01_9000002272_level2

Creation date: 2018-08-06T11:05:33.464675
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_072T01_9000002272cztM0_level2_bc.evt modeM0/AS1G08_072T01_9000002272cztM0_level2_quad_clean.evt
Size (bytes)3,413,897,280915,805,440
Size3.2 GB 873.4 MB
Events in quadrant A15,819,0235,928,631
Events in quadrant B17,752,6966,028,051
Events in quadrant C18,456,1035,945,056
Events in quadrant D46,603,8155,039,629

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014200
B014200
C014200
D014180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520260
B01562650
C01567470
D02742190

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01150
B01150
C01150
D01150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6992313241.893511%
B6992611471.640305%
C699199841.407343%
D699191269118.151003%

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 81318 69925 18 18 0.02% 0.03%
B 81318 69924 49 49 0.06% 0.07%
C 81318 69924 8 8 0.01% 0.01%
D 81318 69922 1963 1963 2.41% 2.81%

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 14 238 814083 1032.16 3639 3580 785.3
A 7 16 349500 440.52 3639 3580 785.3
A 9 143 253605 318.4 3639 3580 785.3
B 10 16 1012928 1458.98 3692 3601 691.8
B 0 197 460146 659.93 3692 3601 691.8
B 3 209 287863 410.9 3692 3601 691.8
C 3 233 3616083 4596.92 3559 3509 785.9
C 7 247 714176 904.31 3559 3509 785.9
C 10 22 69332 83.76 3559 3509 785.9
D 13 122 14851241 19349.21 3288 3170 767.4
D 9 68 9868679 12856.2 3288 3170 767.4
D 7 223 3036967 3953.48 3288 3170 767.4

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