ASTROSAT CZTI

Data Quality Report

Orbit 20180306_T02_012T06_9000001956_level2

Creation date: 2018-07-03T17:11:21.917491
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/AS1T02_012T06_9000001956cztM0_level2_bc.evt modeM0/AS1T02_012T06_9000001956cztM0_level2_quad_clean.evt
Size (bytes)186,445,44054,792,000
Size177.8 MB 52.3 MB
Events in quadrant A1,041,672353,183
Events in quadrant B2,145,179288,196
Events in quadrant C966,139356,688
Events in quadrant D1,169,050335,516

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A097610
B0190150
C095490
D0104330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4625410.886486%
B4625206444.627027%
C4625270.583784%
D4625551.189189%

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 5866 4626 5 5 0.09% 0.11%
B 5866 4352 191 191 3.26% 4.39%
C 5866 4626 0 0 0.00% 0.00%
D 5866 4626 0 0 0.00% 0.00%

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 12 189 48419 887.66 243 237 54.3
A 4 2 37883 693.56 243 237 54.3
A 2 79 6591 117.06 243 237 54.3
B 4 239 1460446 44006.05 163 158 33.2
B 0 214 15933 475.38 163 158 33.2
B 0 189 9631 285.47 163 158 33.2
C 15 208 9757 171.15 243 239 55.6
C 14 234 2571 41.93 243 239 55.6
C 8 222 1546 23.5 243 239 55.6
D 13 122 121661 2131.96 240 231 57.0
D 1 52 44951 785.15 240 231 57.0
D 14 34 23607 410.41 240 231 57.0

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