ASTROSAT CZTI

Data Quality Report

Orbit 08519

Creation date: 2024-06-27T15:33:47.201949
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/AS1G07_060T01_9000001200_08519cztM0_level2.evt modeM0/AS1G07_060T01_9000001200_08519cztM0_level2_quad_clean.evt
Size (bytes)1,240,280,640234,578,880
Size1.2 GB 223.7 MB
Events in quadrant A8,431,3041,476,584
Events in quadrant B9,664,7911,472,829
Events in quadrant C8,139,2411,470,636
Events in quadrant D10,071,2111,406,131

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0382245
B0412794
C0376934
D0433594

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185432351.267325%
B185434762.567006%
C185431490.803538%
D185434842.610149%

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 20348 18545 30 30 0.15% 0.16%
B 20348 18545 196 196 0.96% 1.06%
C 20348 18545 0 0 0.00% 0.00%
D 20348 18545 340 340 1.67% 1.83%

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 5 16 145926 327.98 2136 2087 438.6
A 13 251 43630 94.73 2136 2087 438.6
A 0 226 19958 40.75 2136 2087 438.6
B 10 16 817928 2008.76 2126 2070 406.2
B 5 255 281203 687.26 2126 2070 406.2
B 0 214 85659 205.81 2126 2070 406.2
C 13 61 15550 27.91 2084 2091 482.2
C 8 222 9033 14.4 2084 2091 482.2
C 3 202 5297 6.65 2084 2091 482.2
D 1 52 1558009 3111.33 2054 2003 500.1
D 13 105 502446 1000.67 2054 2003 500.1
D 2 234 66251 128.47 2054 2003 500.1

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