ASTROSAT CZTI

Data Quality Report

Orbit 20171219_A03_085T02_9000001784_level2

Creation date: 2017-12-21T18:51:39.915596
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/AS1A03_085T02_9000001784cztM0_level2_bc.evt modeM0/AS1A03_085T02_9000001784cztM0_level2_quad_clean.evt
Size (bytes)4,873,789,4401,473,209,280
Size4.5 GB 1.4 GB
Events in quadrant A25,441,0699,551,176
Events in quadrant B48,040,3099,154,815
Events in quadrant C23,038,1369,306,551
Events in quadrant D43,244,8658,715,629

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01980
B01980
C01980
D01980

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023460
B023460
C023460
D023460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02500230
B03428450
C02382770
D03058580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11516217391.510047%
B115162101558.818013%
C1151627980.692937%
D11516265885.720637%

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 134918 115151 33 33 0.02% 0.03%
B 134918 115149 164 164 0.12% 0.14%
C 134918 115155 5 5 0.00% 0.00%
D 134918 115153 1781 1781 1.32% 1.55%

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 5 16 729874 562.69 5961 5852 1286.7
A 1 162 684619 527.52 5961 5852 1286.7
A 13 251 562163 432.35 5961 5852 1286.7
B 4 239 13915057 12639.32 5807 5646 1100.5
B 0 85 5156511 4680.53 5807 5646 1100.5
B 4 206 2721421 2467.79 5807 5646 1100.5
C 14 234 190523 146.9 5771 5690 1258.3
C 7 247 185683 143.05 5771 5690 1258.3
C 0 207 56239 40.17 5771 5690 1258.3
D 1 52 15016012 11716.59 5660 5464 1281.1
D 8 195 4322451 3369.65 5660 5464 1281.1
D 13 104 550229 425.22 5660 5464 1281.1

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