ASTROSAT CZTI

Data Quality Report

Orbit 20180612_A04_043T01_9000002156_level2

Creation date: 2018-06-15T10:02:47.304359
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/AS1A04_043T01_9000002156cztM0_level2_bc.evt modeM0/AS1A04_043T01_9000002156cztM0_level2_quad_clean.evt
Size (bytes)2,035,298,880673,968,960
Size1.9 GB 642.7 MB
Events in quadrant A11,319,7894,400,492
Events in quadrant B11,716,2544,388,248
Events in quadrant C21,549,1234,309,634
Events in quadrant D13,985,1614,221,222

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09140
B09140
C09140
D09140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01019750
B01023200
C01414490
D01125180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A450984020.891392%
B450986881.525567%
C450986161.365914%
D4509821864.847222%

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 52214 45098 18 18 0.03% 0.04%
B 52214 45097 59 59 0.11% 0.13%
C 52214 45097 5 5 0.01% 0.01%
D 52214 45096 364 364 0.70% 0.81%

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 0 23 711538 1382.96 2357 2316 512.8
A 1 162 564271 1095.79 2357 2316 512.8
A 12 189 344213 666.69 2357 2316 512.8
B 10 16 743751 1676.73 2364 2304 442.2
B 0 189 709413 1599.08 2364 2304 442.2
B 0 230 174828 390.15 2364 2304 442.2
C 3 233 12458769 24493.44 2294 2266 508.6
C 3 234 69266 131.74 2294 2266 508.6
C 3 232 31479 57.44 2294 2266 508.6
D 13 122 1606056 2884.78 2308 2246 556.0
D 10 199 1026546 1842.41 2308 2246 556.0
D 12 110 809565 1452.13 2308 2246 556.0

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