ASTROSAT CZTI

Data Quality Report

Orbit 20170404_C02_041T01_9000001136_level2

Creation date: 2017-09-23T14:56:56.272431
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/AS1C02_041T01_9000001136cztM0_level2.evt modeM0/AS1C02_041T01_9000001136cztM0_level2_quad_clean.evt
Size (bytes)6,083,812,8001,101,260,160
Size5.7 GB 1.0 GB
Events in quadrant A43,477,5296,895,117
Events in quadrant B45,739,9776,907,938
Events in quadrant C43,317,0786,775,301
Events in quadrant D45,634,6756,602,702

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01912150
B01952990
C01896510
D01993390

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018380
B018380
C018380
D018380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9008610911.211065%
B9008513591.508575%
C900866020.668250%
D9008512951.437531%

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 102462 90098 184 184 0.18% 0.20%
B 102462 90098 305 305 0.30% 0.34%
C 102462 90100 1 1 0.00% 0.00%
D 102462 90100 676 676 0.66% 0.75%

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 5 16 1103161 502.49 10717 10507 2174.5
A 15 79 829726 376.74 10717 10507 2174.5
A 6 16 259757 114.63 10717 10507 2174.5
B 10 16 1366245 671.13 10722 10487 2020.1
B 0 214 1014025 496.78 10722 10487 2020.1
B 4 81 443251 214.23 10722 10487 2020.1
C 9 68 2827697 1183.52 10313 10355 2380.5
C 1 16 196105 78.03 10313 10355 2380.5
C 13 61 79457 29.03 10313 10355 2380.5
D 1 52 2574655 935.43 10290 10064 2741.6
D 13 105 991558 358.0 10290 10064 2741.6
D 12 233 990961 357.78 10290 10064 2741.6

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