ASTROSAT CZTI

Data Quality Report

Orbit 20190829_A06_002T01_9000003134_level2

Creation date: 2019-09-03T12:09:19.043084
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/AS1A06_002T01_9000003134cztM0_level2_bc.evt modeM0/AS1A06_002T01_9000003134cztM0_level2_quad_clean.evt
Size (bytes)7,739,596,8002,090,724,480
Size7.2 GB 1.9 GB
Events in quadrant A71,900,62612,888,829
Events in quadrant B43,145,35613,839,543
Events in quadrant C34,680,99113,399,993
Events in quadrant D73,672,51612,118,840

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032860
B032860
C032860
D032860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04723440
B03672530
C03428170
D05075040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02590
B02590
C02590
D02590

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1616192016812.478731%
B16162044622.760797%
C16162026971.668729%
D1616171631910.097329%

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 187341 161616 6396 6396 3.41% 3.96%
B 187342 161618 480 480 0.26% 0.30%
C 187342 161620 12 12 0.01% 0.01%
D 187342 161277 1373 1373 0.73% 0.85%

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 15 236 36837380 20664.55 8169 8033 1782.2
A 13 252 2604604 1456.91 8169 8033 1782.2
A 11 47 512901 283.28 8169 8033 1782.2
B 0 182 6794532 4169.53 8627 8425 1627.5
B 3 64 765255 465.01 8627 8425 1627.5
B 0 190 477064 287.94 8627 8425 1627.5
C 3 233 2265930 1166.85 8232 8188 1934.9
C 0 239 374067 189.09 8232 8188 1934.9
C 0 10 183176 90.44 8232 8188 1934.9
D 7 238 20750411 11255.63 7897 7613 1842.9
D 1 52 7052144 3822.56 7897 7613 1842.9
D 1 20 5820818 3154.41 7897 7613 1842.9

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