ASTROSAT CZTI

Data Quality Report

Orbit 20171122_A04_037T01_9000001716_level2

Creation date: 2017-11-24T18:31:11.701667
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/AS1A04_037T01_9000001716cztM0_level2_bc.evt modeM0/AS1A04_037T01_9000001716cztM0_level2_quad_clean.evt
Size (bytes)2,143,840,320617,319,360
Size2.0 GB 588.7 MB
Events in quadrant A17,565,1013,788,009
Events in quadrant B13,284,8723,901,622
Events in quadrant C10,557,5593,841,667
Events in quadrant D19,996,8903,618,918

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01425970
B01176910
C01068070
D01406040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010540
B010540
C010540
D010540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5168023744.593653%
B5168015292.958591%
C516805841.130031%
D5168027885.394737%

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 61691 51682 185 185 0.30% 0.36%
B 61691 51684 8 8 0.01% 0.02%
C 61691 51683 2 2 0.00% 0.00%
D 61691 51682 145 145 0.24% 0.28%

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 8 5 6009999 10555.4 2643 2591 569.1
A 1 162 851394 1491.4 2643 2591 569.1
A 9 143 135626 233.75 2643 2591 569.1
B 4 239 2325885 4580.98 2720 2645 507.1
B 15 204 327986 641.51 2720 2645 507.1
B 3 209 95599 183.29 2720 2645 507.1
C 15 208 34033 54.29 2668 2632 578.4
C 8 128 23689 36.4 2668 2632 578.4
C 12 4 20818 31.44 2668 2632 578.4
D 13 104 3495026 5824.4 2622 2527 599.6
D 1 52 2287879 3811.25 2622 2527 599.6
D 8 195 1494711 2488.5 2622 2527 599.6

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