ASTROSAT CZTI

Data Quality Report

Orbit 20220501_A11_106T01_9000005102_level2

Creation date: 2022-05-11T11:51:16.331691
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A11_106T01_9000005102cztM0_level2_bc.evt modeM0/AS1A11_106T01_9000005102cztM0_level2_quad_clean.evt
Size (bytes)7,167,153,600859,826,880
Size6.7 GB 820.0 MB
Events in quadrant A146,596,1793,192,722
Events in quadrant B22,166,6656,055,095
Events in quadrant C23,508,7446,042,964
Events in quadrant D19,917,5005,814,822

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014640
B014640
C014640
D014640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05705310
B01737060
C01703410
D01603110

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02610
B02610
C02610
D02610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A716867118299.296934%
B7168620632.877828%
C7168616632.319839%
D716867531.050414%

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 97017 71700 46528 46528 47.96% 64.89%
B 97016 71685 180 180 0.19% 0.25%
C 97016 71683 302 302 0.31% 0.42%
D 97016 71687 277 277 0.29% 0.39%

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 15 169 137261689 282953.43 2169 2135 485.1
A 10 83 815884 1677.5 2169 2135 485.1
A 13 6 54403 107.75 2169 2135 485.1
B 5 172 7343377 10134.42 3693 3612 724.2
B 0 189 289183 394.3 3693 3612 724.2
B 0 197 275050 374.79 3693 3612 724.2
C 0 10 5205105 6202.76 3653 3620 838.6
C 15 214 2785912 3317.88 3653 3620 838.6
C 9 187 385350 455.21 3653 3620 838.6
D 12 217 1614294 1884.42 3671 3560 854.8
D 2 153 783434 912.38 3671 3560 854.8
D 13 249 659969 767.94 3671 3560 854.8

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