ASTROSAT CZTI

Data Quality Report

Orbit 20160528_G05_234T02_9000000474_level2

Creation date: 2017-10-27T07:50:18.718791
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/AS1G05_234T02_9000000474cztM0_level2.evt modeM0/AS1G05_234T02_9000000474cztM0_level2_quad_clean.evt
Size (bytes)995,221,440207,987,840
Size949.1 MB 198.4 MB
Events in quadrant A7,353,4441,343,064
Events in quadrant B8,537,8541,334,814
Events in quadrant C6,481,7141,326,127
Events in quadrant D6,780,7251,289,428

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02940
B02960
C02960
D02960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0316840
B0347450
C0296390
D0307200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A145832451.680038%
B145723102.127368%
C145771080.740893%
D145841731.186231%

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 16851 14588 77 77 0.46% 0.53%
B 16851 14577 154 154 0.91% 1.06%
C 16851 14582 2 2 0.01% 0.01%
D 16851 14588 56 56 0.33% 0.38%

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 13 164 293110 844.56 1708 1670 345.1
A 0 50 271818 782.85 1708 1670 345.1
A 13 251 135856 388.85 1708 1670 345.1
B 15 204 1106084 3359.86 1719 1679 328.7
B 14 167 435075 1318.49 1719 1679 328.7
B 0 182 90656 270.69 1719 1679 328.7
C 13 61 13980 32.27 1649 1653 382.0
C 7 220 13509 31.04 1649 1653 382.0
C 9 247 13103 29.98 1649 1653 382.0
D 13 239 174481 434.41 1654 1611 397.9
D 13 223 125380 311.02 1654 1611 397.9
D 14 34 36316 87.21 1654 1611 397.9

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