ASTROSAT CZTI

Data Quality Report

Orbit 20191120_T03_149T01_9000003314_level2

Creation date: 2019-11-21T10:48:38.803019
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_149T01_9000003314cztM0_level2_bc.evt modeM0/AS1T03_149T01_9000003314cztM0_level2_quad_clean.evt
Size (bytes)171,552,96059,054,400
Size163.6 MB 56.3 MB
Events in quadrant A981,622363,260
Events in quadrant B1,080,550367,179
Events in quadrant C955,299351,189
Events in quadrant D1,816,014342,220

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104080
B0106620
C0104100
D0127650

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A519620.038491%
B519650.096228%
C5196140.269438%
D5196881.693610%

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 5196 5196 0 0 0.00% 0.00%
B 5196 5196 0 0 0.00% 0.00%
C 5196 5196 0 0 0.00% 0.00%
D 5196 5196 24 24 0.46% 0.46%

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 7802 130.13 253 247 58.1
A 3 1 2200 33.64 253 247 58.1
A 0 226 1608 23.44 253 247 58.1
B 15 33 43644 836.78 258 251 51.9
B 3 64 14839 281.31 258 251 51.9
B 0 197 11993 226.43 258 251 51.9
C 10 22 4127 62.99 247 244 61.6
C 13 61 1349 17.93 247 244 61.6
C 1 16 787 8.81 247 244 61.6
D 1 52 562472 9210.72 250 241 61.0
D 7 223 161117 2635.54 250 241 61.0
D 13 104 67323 1098.97 250 241 61.0

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