ASTROSAT CZTI

Data Quality Report

Orbit 20160901_G05_250T02_9000000638_level2

Creation date: 2018-05-17T14:32:59.137574
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/AS1G05_250T02_9000000638cztM0_level2.evt modeM0/AS1G05_250T02_9000000638cztM0_level2_quad_clean.evt
Size (bytes)11,116,033,9202,011,864,320
Size10.4 GB 1.9 GB
Events in quadrant A75,726,83112,556,801
Events in quadrant B80,237,66312,697,226
Events in quadrant C72,348,43012,732,892
Events in quadrant D97,559,19912,003,298

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032540
B032540
C032540
D032540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03382710
B03469260
C03284720
D04029020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02350
B02350
C02350
D02350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15980225601.601982%
B15980223321.459306%
C15980213250.829151%
D15980150703.172696%

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 183508 159838 765 765 0.42% 0.48%
B 183508 159838 192 192 0.10% 0.12%
C 183508 159838 15 15 0.01% 0.01%
D 183508 159838 2709 2709 1.48% 1.69%

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 1697291 454.38 18439 18046 3695.7
A 13 251 1086801 289.19 18439 18046 3695.7
A 0 50 947094 251.39 18439 18046 3695.7
B 15 204 4747475 1349.47 18608 18160 3504.6
B 0 219 1054053 295.58 18608 18160 3504.6
B 4 48 947475 265.17 18608 18160 3504.6
C 1 16 1695871 409.01 17930 17987 4102.3
C 14 67 369323 85.64 17930 17987 4102.3
C 9 54 200146 44.4 17930 17987 4102.3
D 12 227 8286007 1929.26 17776 17233 4286.0
D 13 235 7384782 1718.99 17776 17233 4286.0
D 2 136 3095634 718.25 17776 17233 4286.0

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