ASTROSAT CZTI

Data Quality Report

Orbit 46812

Creation date: 2024-06-27T23:27:58.907760
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/AS1C07_001T10_9000006272_46812cztM0_level2.fits modeM0/AS1C07_001T10_9000006272_46812cztM0_level2_quad_clean.evt
Size (bytes)600,148,800132,560,640
Size572.3 MB 126.4 MB
Events in quadrant A7,788,060861,458
Events in quadrant B4,250,176902,553
Events in quadrant C3,723,257886,091
Events in quadrant D5,812,260787,901

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0288541
B0185491
C0174121
D0231291

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82822683.235933%
B82831111.340094%
C8283480.579500%
D82833303.984064%

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 8852 8283 32 32 0.36% 0.39%
B 8853 8284 23 23 0.26% 0.28%
C 8853 8284 26 26 0.29% 0.31%
D 8853 8284 252 252 2.85% 3.04%

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 4120292 22183.16 895 874 185.7
A 13 248 80334 427.89 895 874 185.7
A 13 6 42070 221.84 895 874 185.7
B 3 112 189115 1056.92 908 879 178.1
B 4 171 152573 851.74 908 879 178.1
B 5 255 124475 693.98 908 879 178.1
C 14 254 150448 703.82 905 904 212.5
C 0 207 22992 103.95 905 904 212.5
C 3 233 14893 65.84 905 904 212.5
D 1 52 853759 3857.87 884 855 221.1
D 13 249 505624 2283.18 884 855 221.1
D 12 128 409542 1848.58 884 855 221.1

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