ASTROSAT CZTI

Data Quality Report

Orbit 20190226_A05_072T02_9000002736_level2

Creation date: 2019-02-28T10:06:43.785090
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_072T02_9000002736cztM0_level2_bc.evt modeM0/AS1A05_072T02_9000002736cztM0_level2_quad_clean.evt
Size (bytes)2,163,026,880791,262,720
Size2.0 GB 754.6 MB
Events in quadrant A14,946,3104,986,364
Events in quadrant B15,544,3685,144,415
Events in quadrant C14,190,9284,972,191
Events in quadrant D16,781,2734,794,072

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01338050
B01351480
C01326220
D01376950

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0990
B0990
C0990
D0990

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012080
B012080
C012080
D012080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5932914022.363094%
B5932918113.052470%
C5932911821.992280%
D5932913842.332755%

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 69235 59319 57 57 0.08% 0.10%
B 69235 59321 162 162 0.23% 0.27%
C 69235 59327 2 2 0.00% 0.00%
D 69235 59320 264 264 0.38% 0.45%

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 13 1465194 2172.04 3130 3069 673.2
A 15 174 1033092 1530.14 3130 3069 673.2
A 4 2 336523 495.36 3130 3069 673.2
B 10 245 2503694 4180.42 3191 3105 598.2
B 15 222 245590 405.38 3191 3105 598.2
B 7 220 107685 174.83 3191 3105 598.2
C 3 233 2264548 3155.49 3073 3054 716.7
C 9 54 66248 88.18 3073 3054 716.7
C 0 207 26532 32.76 3073 3054 716.7
D 7 238 2114859 2938.7 3113 3000 718.6
D 7 38 639638 885.9 3113 3000 718.6
D 13 168 590285 817.22 3113 3000 718.6

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