ASTROSAT CZTI

Data Quality Report

Orbit 13137

Creation date: 2024-06-27T16:36:48.263124
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/AS1G08_061T01_9000001938_13137cztM0_level2.evt modeM0/AS1G08_061T01_9000001938_13137cztM0_level2_quad_clean.evt
Size (bytes)626,541,12075,300,480
Size597.5 MB 71.8 MB
Events in quadrant A3,366,974463,165
Events in quadrant B6,387,920452,024
Events in quadrant C3,102,555472,486
Events in quadrant D5,662,857424,407

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142103
B0235512
C0136912
D0214112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6710560.834575%
B6710131819.642325%
C6710330.491803%
D67106609.836066%

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 7686 6712 11 11 0.14% 0.16%
B 7686 6712 853 853 11.10% 12.71%
C 7686 6712 0 0 0.00% 0.00%
D 7686 6712 582 582 7.57% 8.67%

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 13 248 72443 435.76 810 794 164.4
A 12 189 63183 379.45 810 794 164.4
A 1 162 33418 198.42 810 794 164.4
B 4 239 1801772 13040.14 722 704 138.1
B 0 85 1465855 10608.02 722 704 138.1
B 3 64 162308 1170.05 722 704 138.1
C 13 61 5880 27.43 795 796 185.4
C 15 208 1923 6.08 795 796 185.4
C 3 202 1895 5.93 795 796 185.4
D 1 52 2594458 14104.4 767 745 183.9
D 13 172 80456 433.46 767 745 183.9
D 2 234 34671 184.49 767 745 183.9

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