ASTROSAT CZTI

Data Quality Report

Orbit 20181002_A05_212T08_9000002396_level2

Creation date: 2018-10-03T10:48:03.181547
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/AS1A05_212T08_9000002396cztM0_level2_bc.evt modeM0/AS1A05_212T08_9000002396cztM0_level2_quad_clean.evt
Size (bytes)175,193,28072,057,600
Size167.1 MB 68.7 MB
Events in quadrant A1,186,709458,619
Events in quadrant B1,194,800463,398
Events in quadrant C1,046,680445,284
Events in quadrant D1,504,266439,333

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114870
B0112670
C0110450
D0121850

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53561152.147125%
B53561262.352502%
C53561122.091113%
D5356861.605676%

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 6207 5357 0 0 0.00% 0.00%
B 6207 5357 1 1 0.02% 0.02%
C 6207 5357 0 0 0.00% 0.00%
D 6207 5357 2 2 0.03% 0.04%

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 15 174 101173 1619.21 276 271 62.3
A 9 143 14150 222.72 276 271 62.3
A 13 248 6533 100.49 276 271 62.3
B 0 198 52651 946.53 279 271 55.3
B 0 189 26071 466.22 279 271 55.3
B 3 209 8942 156.69 279 271 55.3
C 3 233 8831 131.79 268 266 65.0
C 0 207 5207 76.03 268 266 65.0
C 7 247 1602 20.56 268 266 65.0
D 1 52 144072 2214.91 274 264 64.9
D 7 38 128003 1967.42 274 264 64.9
D 13 112 87573 1344.72 274 264 64.9

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