ASTROSAT CZTI

Data Quality Report

Orbit 27913

Creation date: 2024-06-27T19:45:55.178791
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/AS1A10_048T06_9000004030_27913cztM0_level2.evt modeM0/AS1A10_048T06_9000004030_27913cztM0_level2_quad_clean.evt
Size (bytes)694,958,400116,015,040
Size662.8 MB 110.6 MB
Events in quadrant A3,982,566765,955
Events in quadrant B4,539,547772,124
Events in quadrant C4,336,424724,849
Events in quadrant D7,620,769667,852

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174020
B0188990
C0182080
D0283900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8389941.120515%
B83891702.026463%
C83892312.753606%
D839090510.786651%

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 8784 8391 1 1 0.01% 0.01%
B 8784 8390 10 10 0.11% 0.12%
C 8784 8390 4 4 0.05% 0.05%
D 8785 8391 631 631 7.18% 7.52%

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 13 254 15080 67.03 1029 1004 210.0
A 8 192 11660 50.75 1029 1004 210.0
A 3 137 10109 43.36 1029 1004 210.0
B 10 245 343416 1726.86 1024 995 198.3
B 0 230 98941 493.95 1024 995 198.3
B 15 32 38428 188.78 1024 995 198.3
C 3 233 159445 690.01 977 983 229.7
C 14 238 155149 671.3 977 983 229.7
C 6 112 106756 460.58 977 983 229.7
D 1 52 2764323 12138.27 943 915 227.7
D 8 195 870376 3819.11 943 915 227.7
D 2 250 258060 1129.51 943 915 227.7

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