ASTROSAT CZTI

Data Quality Report

Orbit 20170301_A02_155T01_9000001062_level2

Creation date: 2017-09-23T07:21:14.242985
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/AS1A02_155T01_9000001062cztM0_level2.evt modeM0/AS1A02_155T01_9000001062cztM0_level2_quad_clean.evt
Size (bytes)4,286,099,520730,941,120
Size4.0 GB 697.1 MB
Events in quadrant A28,695,4964,543,765
Events in quadrant B29,771,9954,628,332
Events in quadrant C32,714,1214,520,581
Events in quadrant D34,538,5494,294,022

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01256980
B01277000
C01360890
D01442230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012360
B012360
C012360
D012360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0900
B0900
C0900
D0900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A605328501.404216%
B6053210411.719752%
C6053210961.810613%
D6053226134.316725%

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 69587 60540 7 7 0.01% 0.01%
B 69587 60539 118 118 0.17% 0.19%
C 69587 60540 326 326 0.47% 0.54%
D 69587 60540 1810 1810 2.60% 2.99%

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 256671 167.45 7348 7186 1489.9
A 0 226 86517 53.25 7348 7186 1489.9
A 3 1 68313 41.03 7348 7186 1489.9
B 4 239 583288 412.37 7385 7209 1397.0
B 0 214 149733 102.02 7385 7209 1397.0
B 12 111 145720 99.15 7385 7209 1397.0
C 9 68 4125586 2491.98 7179 7231 1652.6
C 8 229 438604 261.02 7179 7231 1652.6
C 10 22 84458 46.73 7179 7231 1652.6
D 12 221 4752120 2771.93 7046 6832 1711.9
D 2 152 2061605 1200.28 7046 6832 1711.9
D 13 104 272136 154.98 7046 6832 1711.9

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