ASTROSAT CZTI

Data Quality Report

Orbit 20170422_G07_007T01_9000001196_level2

Creation date: 2025-11-11T15:18:42.733597
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/AS1G07_007T01_9000001196cztM0_level2.fits modeM0/AS1G07_007T01_9000001196cztM0_level2_quad_clean.evt
Size (bytes)480,219,840453,320,640
Size458.0 MB 432.3 MB
Events in quadrant A2,854,5182,621,104
Events in quadrant B2,834,5882,696,661
Events in quadrant C2,870,2202,568,510
Events in quadrant D2,480,5802,340,907

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010380
B010380
C010380
D010380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01338300
B01126660
C01052930
D01219030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5102237497.347811%
B5102212932.534201%
C510226021.179883%
D5102116443.222203%

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 57633 51012 0 0 0.00% 0.00%
B 57633 51010 0 0 0.00% 0.00%
C 57633 51021 0 0 0.00% 0.00%
D 57633 51015 0 0 0.00% 0.00%

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 0 29 2728 10.84 743 692 187.9
A 7 110 2404 9.11 743 692 187.9
A 0 30 2142 7.72 743 692 187.9
B 2 9 2516 11.93 748 711 151.3
B 14 254 1900 7.86 748 711 151.3
B 12 226 1899 7.85 748 711 151.3
C 1 80 2136 7.23 757 700 198.7
C 12 241 2072 6.9 757 700 198.7
C 1 81 2035 6.72 757 700 198.7
D 3 14 1838 6.27 706 639 191.1
D 6 231 1831 6.24 706 639 191.1
D 1 3 1774 5.94 706 639 191.1

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