ASTROSAT CZTI

Data Quality Report

Orbit 20181212_A05_025T16_9000002560_level2

Creation date: 2018-12-13T09:49:41.082091
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_025T16_9000002560cztM0_level2_bc.evt modeM0/AS1A05_025T16_9000002560cztM0_level2_quad_clean.evt
Size (bytes)664,505,280278,444,160
Size633.7 MB 265.5 MB
Events in quadrant A4,148,8221,794,447
Events in quadrant B4,308,4341,814,900
Events in quadrant C4,434,0081,701,348
Events in quadrant D5,786,7651,668,793

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04320
B04320
C04320
D04320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0433070
B0437920
C0447610
D0492400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A21116720.340974%
B211161700.805077%
C211163461.638568%
D211163741.771169%

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 23601 21117 0 0 0.00% 0.00%
B 23601 21117 0 0 0.00% 0.00%
C 23601 21116 1 1 0.00% 0.00%
D 23601 21116 41 41 0.17% 0.19%

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 10 1 7948 28.91 1077 1053 238.5
A 15 191 7933 28.84 1077 1053 238.5
A 0 226 6918 24.59 1077 1053 238.5
B 0 230 36398 167.96 1088 1057 210.4
B 4 173 29345 134.44 1088 1057 210.4
B 0 214 28753 131.63 1088 1057 210.4
C 3 233 443199 1830.14 1027 1017 241.6
C 8 128 13339 51.0 1027 1017 241.6
C 1 16 9311 34.33 1027 1017 241.6
D 5 222 618286 2558.53 1039 1002 241.3
D 13 189 271440 1120.91 1039 1002 241.3
D 10 70 268827 1110.08 1039 1002 241.3

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