ASTROSAT CZTI

Data Quality Report

Orbit 20180702_T02_055T01_9000002206_level2

Creation date: 2018-07-04T10:45:28.005012
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/AS1T02_055T01_9000002206cztM0_level2_bc.evt modeM0/AS1T02_055T01_9000002206cztM0_level2_quad_clean.evt
Size (bytes)2,683,523,5201,019,808,000
Size2.5 GB 972.6 MB
Events in quadrant A15,317,2156,720,283
Events in quadrant B27,762,2436,488,077
Events in quadrant C15,160,1476,494,267
Events in quadrant D18,253,9016,379,341

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01454290
B01967480
C01436430
D01576710

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014300
B014300
C014300
D014300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A701146330.902815%
B7011449437.049947%
C701144920.701714%
D7011415072.149357%

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 81710 70117 0 0 0.00% 0.00%
B 81710 70115 559 559 0.68% 0.80%
C 81710 70116 2 2 0.00% 0.00%
D 81710 70114 152 152 0.19% 0.22%

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 12 189 816229 1008.56 3676 3606 805.7
A 3 1 165343 200.73 3676 3606 805.7
A 4 2 71779 84.61 3676 3606 805.7
B 10 16 11041782 16088.6 3566 3469 686.1
B 0 219 1307153 1900.15 3566 3469 686.1
B 0 229 742417 1077.03 3566 3469 686.1
C 3 233 1342132 1751.18 3504 3466 764.4
C 9 236 42370 50.89 3504 3466 764.4
C 10 22 32454 37.92 3504 3466 764.4
D 7 254 2002274 2431.88 3540 3437 821.9
D 13 249 637103 770.95 3540 3437 821.9
D 2 33 586067 708.86 3540 3437 821.9

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