ASTROSAT CZTI

Data Quality Report

Orbit 20180802_C03_001T01_9000002270_level2

Creation date: 2018-08-04T12:07:09.334232
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/AS1C03_001T01_9000002270cztM0_level2_bc.evt modeM0/AS1C03_001T01_9000002270cztM0_level2_quad_clean.evt
Size (bytes)4,981,628,1601,281,651,840
Size4.6 GB 1.2 GB
Events in quadrant A22,893,4968,437,354
Events in quadrant B34,071,6508,443,767
Events in quadrant C20,405,9358,699,506
Events in quadrant D67,776,0137,460,572

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017140
B017140
C017140
D017140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02066120
B02384340
C01796350
D03681210

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01430
B01430
C01430
D01430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8418146805.559449%
B8418161587.315190%
C841818150.968152%
D841811945923.115667%

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 98462 84091 53 53 0.05% 0.06%
B 98462 84173 544 544 0.55% 0.65%
C 98462 84175 1 1 0.00% 0.00%
D 98462 84173 2318 2318 2.35% 2.75%

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 4745530 5220.76 4192 4116 908.2
A 14 237 1067524 1170.91 4192 4116 908.2
A 9 143 339542 369.34 4192 4116 908.2
B 10 245 9932174 12318.62 4220 4109 805.9
B 10 16 1757341 2175.39 4220 4109 805.9
B 8 3 1737919 2151.29 4220 4109 805.9
C 3 233 3643645 3835.03 4240 4192 949.0
C 7 247 117656 119.56 4240 4192 949.0
C 0 207 30601 27.83 4240 4192 949.0
D 13 122 39771256 41521.59 3955 3806 957.8
D 2 33 4011540 4184.51 3955 3806 957.8
D 9 68 2749535 2866.84 3955 3806 957.8

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