ASTROSAT CZTI

Data Quality Report

Orbit 20180913_C03_015T03_9000002366_level2

Creation date: 2018-09-14T17:04:18.885589
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/AS1C03_015T03_9000002366cztM0_level2_bc.evt modeM0/AS1C03_015T03_9000002366cztM0_level2_quad_clean.evt
Size (bytes)440,881,920267,696,000
Size420.5 MB 255.3 MB
Events in quadrant A2,978,7271,778,952
Events in quadrant B3,311,2891,820,398
Events in quadrant C2,877,4171,761,813
Events in quadrant D3,177,5341,735,475

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0303120
B0317140
C0301480
D0307900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03000
B03000
C03000
D03000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14664470.320513%
B146641981.350245%
C146641050.716039%
D14664520.354610%

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 15236 14665 2 2 0.01% 0.01%
B 15236 14666 26 26 0.17% 0.18%
C 15236 14665 0 0 0.00% 0.00%
D 15236 14665 4 4 0.03% 0.03%

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 15 157 72298 448.58 718 702 159.6
A 14 239 30697 187.93 718 702 159.6
A 15 239 27666 168.94 718 702 159.6
B 0 245 191878 1330.61 727 708 143.7
B 7 220 109378 756.38 727 708 143.7
B 4 173 43044 294.67 727 708 143.7
C 3 233 129154 769.66 701 695 166.9
C 8 128 20210 116.92 701 695 166.9
C 0 207 10788 60.47 701 695 166.9
D 2 152 184799 1095.9 716 690 168.0
D 10 70 115283 682.11 716 690 168.0
D 2 16 62607 368.56 716 690 168.0

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