ASTROSAT CZTI

Data Quality Report

Orbit 45845

Creation date: 2024-06-27T23:16:49.629238
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/AS1T05_186T01_9000006130_45845cztM0_level2.fits modeM0/AS1T05_186T01_9000006130_45845cztM0_level2_quad_clean.evt
Size (bytes)2,002,020,480257,616,000
Size1.9 GB 245.7 MB
Events in quadrant A18,509,4011,755,540
Events in quadrant B27,990,4641,288,462
Events in quadrant C8,105,0801,929,741
Events in quadrant D18,072,0521,544,086

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0673414
B0961704
C0379484
D0666524

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1857515868.538358%
B18576684436.843239%
C18576560.301464%
D18576238412.833764%

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 20000 18579 1215 1215 6.08% 6.54%
B 20001 18579 4698 4698 23.49% 25.29%
C 20001 18580 14 14 0.07% 0.08%
D 20001 18579 1907 1907 9.53% 10.26%

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 7492536 17844.71 2022 1978 419.8
A 15 14 2667082 6349.06 2022 1978 419.8
A 2 79 202275 477.17 2022 1978 419.8
B 3 112 20300437 58795.2 1752 1694 345.2
B 4 171 164134 470.51 1752 1694 345.2
B 0 183 132901 380.04 1752 1694 345.2
C 12 249 39488 77.57 2046 2056 482.6
C 12 2 38006 74.5 2046 2056 482.6
C 3 233 34242 66.7 2046 2056 482.6
D 13 249 3146495 6417.07 1935 1878 490.0
D 1 52 2825894 5762.84 1935 1878 490.0
D 12 2 1536915 3132.48 1935 1878 490.0

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