ASTROSAT CZTI

Data Quality Report

Orbit 20191123_T03_149T09_9000003336_level2

Creation date: 2019-11-25T09:33:48.880581
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/AS1T03_149T09_9000003336cztM0_level2_bc.evt modeM0/AS1T03_149T09_9000003336cztM0_level2_quad_clean.evt
Size (bytes)180,290,88065,856,960
Size171.9 MB 62.8 MB
Events in quadrant A1,001,225414,148
Events in quadrant B1,926,788413,829
Events in quadrant C969,525401,675
Events in quadrant D1,198,711398,699

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107210
B0136790
C0107360
D0113540

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5229931.778543%
B52293847.343660%
C52291222.333142%
D52291152.199273%

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 5584 5228 0 0 0.00% 0.00%
B 5584 5228 101 101 1.81% 1.93%
C 5584 5228 0 0 0.00% 0.00%
D 5584 5228 12 12 0.21% 0.23%

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 13 254 7287 119.9 257 251 58.7
A 3 1 5651 92.02 257 251 58.7
A 0 226 1640 23.67 257 251 58.7
B 10 245 912823 17573.01 254 247 51.9
B 4 173 32905 628.88 254 247 51.9
B 0 214 3558 63.76 254 247 51.9
C 10 22 1952 27.41 250 247 62.2
C 10 91 1766 24.42 250 247 62.2
C 13 61 1431 19.03 250 247 62.2
D 1 52 152841 2449.44 256 245 62.3
D 13 172 49876 796.67 256 245 62.3
D 2 234 20314 322.14 256 245 62.3

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