ASTROSAT CZTI

Data Quality Report

Orbit 20190312_T03_091T01_9000002790_level2

Creation date: 2019-03-15T14:35:01.512088
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/AS1T03_091T01_9000002790cztM0_level2_bc.evt modeM0/AS1T03_091T01_9000002790cztM0_level2_quad_clean.evt
Size (bytes)1,588,216,320575,726,400
Size1.5 GB 549.1 MB
Events in quadrant A9,110,3733,675,412
Events in quadrant B9,941,9643,746,883
Events in quadrant C9,461,6543,541,017
Events in quadrant D16,535,9083,406,601

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09100
B09100
C09100
D09100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0918330
B0947220
C0944110
D01151520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A447002990.668904%
B447005371.201342%
C447006681.494407%
D4470015043.364653%

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 50185 44699 5 5 0.01% 0.01%
B 50185 44701 12 12 0.02% 0.03%
C 50185 44697 4 4 0.01% 0.01%
D 50185 44699 243 243 0.48% 0.54%

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 13 254 69063 130.96 2320 2281 509.9
A 6 16 62030 117.17 2320 2281 509.9
A 11 29 34810 63.79 2320 2281 509.9
B 4 80 194737 429.38 2359 2303 448.2
B 0 197 137032 300.62 2359 2303 448.2
B 7 220 113770 248.72 2359 2303 448.2
C 3 233 545970 1030.07 2224 2214 527.9
C 9 54 351948 662.52 2224 2214 527.9
C 9 221 15152 24.51 2224 2214 527.9
D 1 52 5624031 10646.12 2241 2160 528.1
D 7 238 1617846 3059.62 2241 2160 528.1
D 12 110 479785 904.48 2241 2160 528.1

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