ASTROSAT CZTI

Data Quality Report

Orbit 44926

Creation date: 2024-06-27T23:08:04.534265
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_017T02_9000006032_44926cztM0_level2.fits modeM0/AS1A13_017T02_9000006032_44926cztM0_level2_quad_clean.evt
Size (bytes)601,297,920113,425,920
Size573.4 MB 108.2 MB
Events in quadrant A5,928,919762,385
Events in quadrant B4,341,784789,157
Events in quadrant C3,355,792781,894
Events in quadrant D8,092,308616,091

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227161
B0176831
C0147091
D0289141

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69632914.179233%
B69622824.050560%
C6963731.048399%
D6963126918.224903%

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 7703 6964 2 2 0.03% 0.03%
B 7702 6963 70 70 0.91% 1.01%
C 7703 6964 8 8 0.10% 0.11%
D 7703 6963 826 826 10.72% 11.86%

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 10 83 2650880 15404.02 824 804 172.0
A 0 247 40897 233.05 824 804 172.0
A 0 243 36889 209.75 824 804 172.0
B 4 171 430463 2653.03 824 799 162.0
B 0 219 181709 1117.06 824 799 162.0
B 0 183 99981 612.41 824 799 162.0
C 12 2 62687 321.3 821 827 192.5
C 3 233 33149 167.88 821 827 192.5
C 15 208 31748 160.61 821 827 192.5
D 1 52 2286425 11790.26 766 741 193.9
D 1 47 1078532 5559.57 766 741 193.9
D 13 249 805924 4153.38 766 741 193.9

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