ASTROSAT CZTI

Data Quality Report

Orbit 20161110_G06_130T01_9000000782_level2

Creation date: 2017-09-19T00:27:10.429910
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/AS1G06_130T01_9000000782cztM0_level2.evt modeM0/AS1G06_130T01_9000000782cztM0_level2_quad_clean.evt
Size (bytes)3,240,941,760822,997,440
Size3.0 GB 784.9 MB
Events in quadrant A22,085,2545,500,916
Events in quadrant B25,755,1925,562,312
Events in quadrant C22,053,5875,468,726
Events in quadrant D25,152,0335,239,345

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09400
B09400
C09400
D09400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0710
B0710
C0710
D0710

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0975050
B01079610
C0994800
D01080840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A460145741.247446%
B4601214103.064418%
C4601310092.192859%
D4601310652.314563%

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 53049 46023 13 13 0.02% 0.03%
B 53048 46020 472 472 0.89% 1.03%
C 53049 46023 540 540 1.02% 1.17%
D 53049 46024 646 646 1.22% 1.40%

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 15 1712266 1618.29 5238 5112 1054.9
A 4 2 74846 66.1 5238 5112 1054.9
A 14 111 57101 49.28 5238 5112 1054.9
B 3 64 3233016 3243.57 5293 5160 995.2
B 4 81 589867 587.55 5293 5160 995.2
B 15 204 472601 469.72 5293 5160 995.2
C 9 16 1758657 1510.27 5096 5107 1161.1
C 9 54 127566 105.47 5096 5107 1161.1
C 1 16 118806 97.92 5096 5107 1161.1
D 13 169 2212459 1788.59 5080 4912 1234.2
D 12 221 1642303 1326.64 5080 4912 1234.2
D 2 33 477952 383.27 5080 4912 1234.2

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