ASTROSAT CZTI

Data Quality Report

Orbit 20211118_T04_066T01_9000004772_level2

Creation date: 2021-11-20T18:28:51.103635
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/AS1T04_066T01_9000004772cztM0_level2_bc.evt modeM0/AS1T04_066T01_9000004772cztM0_level2_quad_clean.evt
Size (bytes)2,648,689,920585,132,480
Size2.5 GB 558.0 MB
Events in quadrant A9,251,9863,938,834
Events in quadrant B16,695,7943,802,797
Events in quadrant C9,859,0463,821,523
Events in quadrant D41,718,8363,434,318

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0828540
B01149120
C0849670
D01885520

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08140
B08140
C08140
D08140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01530
B01530
C01530
D01530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A39670580.146206%
B3967020045.051676%
C396703250.819259%
D39670497712.546005%

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 55084 39671 3 3 0.01% 0.01%
B 55084 39670 160 160 0.29% 0.40%
C 55084 39670 25 25 0.05% 0.06%
D 55084 39670 1306 1306 2.37% 3.29%

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 47 443580 917.58 2230 2202 481.0
A 14 254 73843 148.93 2230 2202 481.0
A 13 6 72661 146.48 2230 2202 481.0
B 4 170 3012980 7117.65 2181 2140 423.0
B 5 172 2601300 6144.43 2181 2140 423.0
B 0 219 645471 1520.84 2181 2140 423.0
C 0 10 800069 1664.09 2139 2129 479.5
C 1 23 165502 340.71 2139 2129 479.5
C 15 159 118805 243.33 2139 2129 479.5
D 8 195 25595054 46379.45 2076 2032 551.8
D 2 250 2052603 3716.03 2076 2032 551.8
D 10 203 1601324 2898.22 2076 2032 551.8

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