ASTROSAT CZTI

Data Quality Report

Orbit 20160315_T01_046T01_9000000372_level2

Creation date: 2018-11-03T09:06:59.181548
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/AS1T01_046T01_9000000372cztM0_level2_bc.evt modeM0/AS1T01_046T01_9000000372cztM0_level2_quad_clean.evt
Size (bytes)116,519,04043,107,840
Size111.1 MB 41.1 MB
Events in quadrant A754,993250,645
Events in quadrant B757,938259,572
Events in quadrant C878,222257,026
Events in quadrant D848,771247,449

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A083990
B083910
C085950
D087130

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A411880.194269%
B4118170.412822%
C411840.097135%
D4118210.509956%

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 5299 4119 0 0 0.00% 0.00%
B 5299 4119 0 0 0.00% 0.00%
C 5299 4119 0 0 0.00% 0.00%
D 5299 4119 1 1 0.02% 0.02%

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 15 236 13504 303.43 191 186 43.9
A 14 238 3290 70.72 191 186 43.9
A 0 128 2099 43.58 191 186 43.9
B 4 173 3372 83.37 194 188 38.2
B 15 85 2908 71.22 194 188 38.2
B 5 6 2330 56.09 194 188 38.2
C 14 223 86060 1971.85 188 184 43.6
C 10 65 27184 619.96 188 184 43.6
C 12 4 13683 309.96 188 184 43.6
D 2 184 47771 1069.41 186 179 44.5
D 5 172 21210 472.57 186 179 44.5
D 11 130 14053 311.75 186 179 44.5

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