ASTROSAT CZTI

Data Quality Report

Orbit 20180307_T02_012T08_9000001960_level2

Creation date: 2018-07-03T14:05:52.686693
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/AS1T02_012T08_9000001960cztM0_level2_bc.evt modeM0/AS1T02_012T08_9000001960cztM0_level2_quad_clean.evt
Size (bytes)273,801,60073,080,000
Size261.1 MB 69.7 MB
Events in quadrant A1,119,709482,343
Events in quadrant B1,904,711460,543
Events in quadrant C1,060,016478,781
Events in quadrant D3,820,351400,884

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114960
B0152220
C0114150
D0220590

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55691192.136829%
B55695569.983839%
C5569851.526306%
D5569105118.872329%

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 6100 5571 0 0 0.00% 0.00%
B 6100 5558 46 46 0.75% 0.83%
C 6100 5570 1 1 0.02% 0.02%
D 6100 5570 239 239 3.92% 4.29%

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 25207 403.99 269 263 61.7
A 4 2 21256 340.0 269 263 61.7
A 12 189 14840 236.09 269 263 61.7
B 4 239 678454 12877.24 259 250 52.7
B 0 197 68445 1294.84 259 250 52.7
B 3 64 64518 1220.27 259 250 52.7
C 15 208 15708 250.26 266 262 61.7
C 13 61 1570 21.19 266 262 61.7
C 8 222 1418 18.73 266 262 61.7
D 13 122 1557246 26589.12 244 234 58.6
D 1 52 1228378 20973.03 244 234 58.6
D 13 104 30929 524.18 244 234 58.6

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