ASTROSAT CZTI

Data Quality Report

Orbit 20190611_C04_001T01_9000002984_level2

Creation date: 2019-06-13T14:00:13.280803
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/AS1C04_001T01_9000002984cztM0_level2_bc.evt modeM0/AS1C04_001T01_9000002984cztM0_level2_quad_clean.evt
Size (bytes)3,707,233,9201,247,500,800
Size3.5 GB 1.2 GB
Events in quadrant A23,516,4208,341,128
Events in quadrant B19,582,0298,401,463
Events in quadrant C16,709,3958,240,267
Events in quadrant D47,133,1357,429,501

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016000
B016000
C016000
D016000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01901120
B01743260
C01645030
D02654930

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7832931974.081502%
B7832813081.669901%
C7832812271.566490%
D783281281816.364518%

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 91754 78332 211 211 0.23% 0.27%
B 91754 78330 11 11 0.01% 0.01%
C 91754 78330 2 2 0.00% 0.00%
D 91754 78333 4376 4376 4.77% 5.59%

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 5246632 5744.45 4188 4121 912.6
A 5 16 1060978 1158.04 4188 4121 912.6
A 14 254 909611 992.19 4188 4121 912.6
B 7 220 803597 1013.67 4216 4122 788.7
B 0 189 579258 729.22 4216 4122 788.7
B 0 197 454513 571.06 4216 4122 788.7
C 3 233 619893 638.22 4101 4095 964.9
C 0 207 219399 223.14 4101 4095 964.9
C 7 247 32103 29.03 4101 4095 964.9
D 7 38 19197959 20393.69 3971 3840 941.2
D 7 238 5342256 5672.05 3971 3840 941.2
D 1 52 2576816 2733.78 3971 3840 941.2

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