ASTROSAT CZTI

Data Quality Report

Orbit 20180805_T02_080T01_9000002276_level2

Creation date: 2018-08-07T10:33:58.992373
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_080T01_9000002276cztM0_level2_bc.evt modeM0/AS1T02_080T01_9000002276cztM0_level2_quad_clean.evt
Size (bytes)4,121,962,5601,237,792,320
Size3.8 GB 1.2 GB
Events in quadrant A21,986,9607,972,489
Events in quadrant B20,809,0138,118,777
Events in quadrant C27,735,9718,032,704
Events in quadrant D48,226,7247,242,724

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018180
B018180
C018180
D018180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01990760
B01918920
C02151580
D02853260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8937713711.533952%
B8937710981.228504%
C8937710861.215078%
D89274948610.625714%

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 105583 89369 23 23 0.02% 0.03%
B 105583 89376 11 11 0.01% 0.01%
C 105583 89373 10 10 0.01% 0.01%
D 105583 89268 3088 3088 2.92% 3.46%

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 15 249 1443259 1399.32 4798 4713 1028.0
A 14 238 1284389 1244.78 4798 4713 1028.0
A 14 237 415194 399.29 4798 4713 1028.0
B 4 142 369549 404.59 4874 4762 901.6
B 0 189 286930 312.96 4874 4762 901.6
B 3 209 235096 255.47 4874 4762 901.6
C 3 233 8760563 8525.14 4713 4672 1027.1
C 7 247 314251 301.42 4713 4672 1027.1
C 10 22 90182 83.26 4713 4672 1027.1
D 1 52 13732249 13001.28 4570 4416 1055.9
D 5 222 11267142 10666.64 4570 4416 1055.9
D 13 122 2837881 2683.5 4570 4416 1055.9

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