ASTROSAT CZTI

Data Quality Report

Orbit 49820

Creation date: 2024-12-14T11:06:25.041854
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/AS1A13_037T01_9000006440_49820cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49820cztM0_level2_quad_clean.evt
Size (bytes)1,238,889,60071,274,240
Size1.2 GB 68.0 MB
Events in quadrant A6,535,267689,106
Events in quadrant B5,909,763744,222
Events in quadrant C16,074,688157,343
Events in quadrant D16,729,70818,881

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246822
B0229022
C0530932
D0551053

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78815947.537115%
B78826948.804872%
C7882642081.451408%
D7881771397.868291%

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 9306 7883 531 531 5.71% 6.74%
B 9307 7884 568 568 6.10% 7.20%
C 9307 7884 5033 5033 54.08% 63.84%
D 9306 7883 5356 5356 57.55% 67.94%

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 0 175 873199 4274.88 822 800 204.1
A 8 38 307176 1501.29 822 800 204.1
A 15 191 263790 1288.69 822 800 204.1
B 5 49 1572693 9129.1 814 789 172.2
B 10 28 337438 1955.15 814 789 172.2
B 4 206 308477 1786.95 814 789 172.2
C 1 44 3264972 20369.99 417 406 160.3
C 15 197 2853041 17799.65 417 406 160.3
C 15 147 2207901 13774.16 417 406 160.3
D 7 61 5456614 49926.97 303 288 109.3
D 14 66 1562980 14299.09 303 288 109.3
D 15 184 1076355 9846.33 303 288 109.3

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