ASTROSAT CZTI

Data Quality Report

Orbit 20160313_G02_018T06_9000000370_level2

Creation date: 2016-09-06T17:52:27.778598
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/AS1G02_018T06_9000000370cztM0_level2_bc.evt modeM0/AS1G02_018T06_9000000370cztM0_level2_quad_clean.evt
Size (bytes)202,703,04079,940,160
Size193.3 MB 76.2 MB
Events in quadrant A1,293,261480,861
Events in quadrant B1,359,466490,104
Events in quadrant C1,330,970487,820
Events in quadrant D1,668,643473,098

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143712
B0145082
C0143692
D0158642

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7016390.555872%
B7016510.726910%
C7016440.627138%
D70161021.453820%

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 7670 7015 0 0 0.00% 0.00%
B 7670 7015 0 0 0.00% 0.00%
C 7670 7015 2 2 0.03% 0.03%
D 7670 7016 4 4 0.05% 0.06%

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 8 15 42006 575.01 320 311 72.5
A 14 63 9305 124.03 320 311 72.5
A 3 254 4570 58.73 320 311 72.5
B 4 200 41007 651.71 327 316 62.4
B 10 244 30035 475.98 327 316 62.4
B 15 85 10351 160.72 327 316 62.4
C 10 65 43058 600.83 317 312 71.1
C 12 4 15723 216.61 317 312 71.1
C 8 208 7708 103.96 317 312 71.1
D 2 184 300222 4004.88 315 305 74.9
D 7 67 112489 1498.02 315 305 74.9
D 5 172 14272 186.51 315 305 74.9

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