ASTROSAT CZTI

Data Quality Report

Orbit 20181211_A05_169T01_9000002558_level2

Creation date: 2018-12-13T12:58:52.316186
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/AS1A05_169T01_9000002558cztM0_level2_bc.evt modeM0/AS1A05_169T01_9000002558cztM0_level2_quad_clean.evt
Size (bytes)3,072,320,6401,331,340,480
Size2.9 GB 1.2 GB
Events in quadrant A20,368,5168,656,259
Events in quadrant B20,930,4248,706,449
Events in quadrant C20,212,7588,171,090
Events in quadrant D24,875,0308,099,033

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019900
B019900
C019900
D019900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02039080
B02060690
C02064730
D02185150

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9767310061.029967%
B9767412991.329934%
C9767416101.648340%
D9767315641.601261%

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 114928 97671 0 0 0.00% 0.00%
B 114928 97670 0 0 0.00% 0.00%
C 114928 97668 0 0 0.00% 0.00%
D 114928 97671 82 82 0.07% 0.08%

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 0 226 34438 25.72 5308 5216 1136.1
A 12 194 33430 24.83 5308 5216 1136.1
A 15 31 33032 24.48 5308 5216 1136.1
B 4 173 214261 209.01 5352 5220 1000.1
B 0 230 139578 134.34 5352 5220 1000.1
B 0 229 97571 92.34 5352 5220 1000.1
C 3 233 625829 530.47 5054 5031 1170.3
C 9 54 123700 101.4 5054 5031 1170.3
C 13 61 29669 21.05 5054 5031 1170.3
D 5 222 3979549 3401.58 5144 4981 1168.4
D 2 152 528961 448.44 5144 4981 1168.4
D 2 234 328208 276.63 5144 4981 1168.4

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