ASTROSAT CZTI

Data Quality Report

Orbit 20161022_A02_106T01_9000000744_level2

Creation date: 2017-09-18T18:48:02.446996
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/AS1A02_106T01_9000000744cztM0_level2.evt modeM0/AS1A02_106T01_9000000744cztM0_level2_quad_clean.evt
Size (bytes)6,603,580,8001,241,447,040
Size6.2 GB 1.2 GB
Events in quadrant A46,882,1467,656,876
Events in quadrant B49,394,8617,896,320
Events in quadrant C45,967,6117,707,922
Events in quadrant D50,818,7847,312,335

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020860
B020860
C020840
D020860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02113160
B02150990
C02099050
D02249840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10254113351.301918%
B10255913881.353367%
C1025628810.858993%
D10258019501.900955%

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 116845 102822 36 36 0.03% 0.04%
B 116845 102835 70 70 0.06% 0.07%
C 116845 102827 0 0 0.00% 0.00%
D 116845 102838 893 893 0.76% 0.87%

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 79 305172 120.08 12015 11749 2443.5
A 15 236 211371 81.69 12015 11749 2443.5
A 0 226 116655 42.93 12015 11749 2443.5
B 15 204 853407 365.36 12179 11885 2303.2
B 4 81 785453 335.86 12179 11885 2303.2
B 12 111 224547 92.33 12179 11885 2303.2
C 13 61 93738 30.52 11721 11774 2685.8
C 8 128 83308 26.63 11721 11774 2685.8
C 1 16 77621 24.52 11721 11774 2685.8
D 7 203 2011945 705.13 11630 11281 2837.3
D 12 233 1732959 606.8 11630 11281 2837.3
D 8 195 1225900 428.09 11630 11281 2837.3

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