ASTROSAT CZTI

Data Quality Report

Orbit 20170203_G06_164T01_9000001004_level2

Creation date: 2017-09-23T01:31:04.259109
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/AS1G06_164T01_9000001004cztM0_level2.evt modeM0/AS1G06_164T01_9000001004cztM0_level2_quad_clean.evt
Size (bytes)1,901,004,480395,133,120
Size1.8 GB 376.8 MB
Events in quadrant A14,083,2942,534,688
Events in quadrant B13,597,3382,548,919
Events in quadrant C12,808,1782,510,738
Events in quadrant D15,139,9422,397,477

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620110
B0600820
C0590740
D0650040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05840
B05840
C05820
D05840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A287378142.832585%
B287416702.331165%
C287413811.325632%
D287405601.948504%

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 30341 28748 113 113 0.37% 0.39%
B 30341 28748 23 23 0.08% 0.08%
C 30341 28749 1 1 0.00% 0.00%
D 30341 28749 87 87 0.29% 0.30%

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 8 15 851689 1299.61 3245 3164 652.9
A 15 234 502044 764.09 3245 3164 652.9
A 13 248 84854 125.12 3245 3164 652.9
B 11 51 371251 596.85 3278 3194 616.7
B 0 214 345140 554.5 3278 3194 616.7
B 4 81 98020 153.77 3278 3194 616.7
C 9 68 371711 503.58 3180 3179 731.8
C 13 61 24395 28.99 3180 3179 731.8
C 8 128 15216 16.45 3180 3179 731.8
D 1 20 1704447 2228.71 3151 3047 763.4
D 2 216 938099 1224.85 3151 3047 763.4
D 1 52 206552 266.58 3151 3047 763.4

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