ASTROSAT CZTI

Data Quality Report

Orbit 20200313_C05_012T04_9000003564_level2

Creation date: 2020-03-16T16:08:50.992310
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/AS1C05_012T04_9000003564cztM0_level2_bc.evt modeM0/AS1C05_012T04_9000003564cztM0_level2_quad_clean.evt
Size (bytes)3,827,695,6801,632,467,520
Size3.6 GB 1.5 GB
Events in quadrant A17,882,82111,309,426
Events in quadrant B18,772,36411,369,791
Events in quadrant C17,617,71210,858,321
Events in quadrant D55,948,24510,166,061

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017080
B017080
C017080
D017080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01725060
B01758540
C01739180
D02918070

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A838227660.913841%
B8382211781.405359%
C8382213321.589082%
D83822847610.111904%

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 98403 83820 4 4 0.00% 0.00%
B 98403 83816 54 54 0.05% 0.06%
C 98403 83815 30 30 0.03% 0.04%
D 98403 83816 3922 3922 3.99% 4.68%

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 13 254 135339 132.64 4552 4487 986.5
A 0 23 117744 114.81 4552 4487 986.5
A 2 250 101518 98.36 4552 4487 986.5
B 0 245 247176 284.03 4545 4447 854.6
B 5 172 206219 236.1 4545 4447 854.6
B 0 228 179421 204.74 4545 4447 854.6
C 0 239 497239 488.54 4328 4323 1009.0
C 7 247 294534 287.63 4328 4323 1009.0
C 3 233 124205 118.82 4328 4323 1009.0
D 8 195 20679358 20069.08 4302 4151 1030.2
D 1 52 14730844 14294.95 4302 4151 1030.2
D 12 233 1290281 1248.42 4302 4151 1030.2

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