ASTROSAT CZTI

Data Quality Report

Orbit 13249

Creation date: 2024-06-27T16:38:22.664210
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_077T01_9000001970_13249cztM0_level2.evt modeM0/AS1G08_077T01_9000001970_13249cztM0_level2_quad_clean.evt
Size (bytes)501,310,080101,583,360
Size478.1 MB 96.9 MB
Events in quadrant A3,823,468632,025
Events in quadrant B4,016,038638,203
Events in quadrant C3,368,013652,759
Events in quadrant D3,460,259626,784

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164552
B0170421
C0155481
D0158391

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75741441.901241%
B75742953.894904%
C7574961.267494%
D7574991.307103%

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 7780 7578 15 15 0.19% 0.20%
B 7780 7578 103 103 1.32% 1.36%
C 7780 7578 10 10 0.13% 0.13%
D 7780 7578 9 9 0.12% 0.12%

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 12 189 376321 2130.52 856 838 176.2
A 15 239 85823 482.21 856 838 176.2
A 14 111 33775 186.89 856 838 176.2
B 4 239 555663 3356.22 856 833 165.3
B 0 214 45214 268.46 856 833 165.3
B 4 80 28172 165.38 856 833 165.3
C 14 234 52960 269.8 840 842 193.2
C 15 208 29768 149.74 840 842 193.2
C 13 61 6122 27.33 840 842 193.2
D 8 195 202008 1002.31 831 807 200.7
D 1 52 61549 302.59 831 807 200.7
D 2 234 27592 133.43 831 807 200.7

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