ASTROSAT CZTI

Data Quality Report

Orbit 20151120_P01_010T01_9000000112_level2

Creation date: 2016-09-06T17:58:48.378202
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/AS1P01_010T01_9000000112cztM0_level2_bc.evt modeM0/AS1P01_010T01_9000000112cztM0_level2_quad_clean.evt
Size (bytes)5,837,857,9202,923,931,520
Size5.4 GB 2.7 GB
Events in quadrant A36,082,93019,133,184
Events in quadrant B42,569,13719,195,912
Events in quadrant C38,106,51918,734,028
Events in quadrant D46,806,97018,204,516

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08235800
B08685110
C08067490
D07930020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A039500
B039500
C039500
D039500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02900
B02900
C02900
D02900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19419414160.729168%
B19419421861.125678%
C19419411820.608670%
D19419428241.454216%

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 238025 194187 60 60 0.03% 0.03%
B 238025 194183 403 403 0.17% 0.21%
C 238025 194192 42 42 0.02% 0.02%
D 238025 194189 1109 1109 0.47% 0.57%

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 15 233 1249663 693.34 8489 8300 1790.4
A 15 171 551313 303.29 8489 8300 1790.4
A 14 79 400016 218.78 8489 8300 1790.4
B 3 204 1427192 920.26 8683 8416 1541.7
B 15 223 1271316 819.15 8683 8416 1541.7
B 5 191 1030094 662.69 8683 8416 1541.7
C 15 241 1947057 1123.76 8311 8146 1725.4
C 9 52 1102423 634.22 8311 8146 1725.4
C 3 79 762096 436.98 8311 8146 1725.4
D 13 25 3708718 2042.73 8262 7997 1811.7
D 1 4 3679029 2026.35 8262 7997 1811.7
D 13 200 1296468 711.21 8262 7997 1811.7

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
Veto Counter