ASTROSAT CZTI

Data Quality Report

Orbit 31078

Creation date: 2024-06-27T20:23:06.510412
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_109T01_9000004492_31078cztM0_level2.evt modeM0/AS1A10_109T01_9000004492_31078cztM0_level2_quad_clean.evt
Size (bytes)569,756,160120,706,560
Size543.4 MB 115.1 MB
Events in quadrant A3,503,041820,104
Events in quadrant B5,187,286826,235
Events in quadrant C3,973,575806,616
Events in quadrant D4,178,468776,866

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143782
B0190392
C0158982
D0164582

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6104741.212320%
B61041482.424640%
C61042674.374181%
D61041522.490170%

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 7499 6105 4 4 0.05% 0.07%
B 7499 6105 0 0 0.00% 0.00%
C 7499 6105 36 36 0.48% 0.59%
D 7499 6105 82 82 1.09% 1.34%

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 13 170 44006 247.83 886 873 174.0
A 12 96 38590 216.71 886 873 174.0
A 13 254 11304 59.93 886 873 174.0
B 6 159 1714485 10517.87 878 859 162.9
B 12 111 18786 110.03 878 859 162.9
B 11 111 17407 101.57 878 859 162.9
C 0 10 276705 1386.13 864 876 199.0
C 10 22 144537 721.94 864 876 199.0
C 14 238 141096 704.65 864 876 199.0
D 8 195 494062 2431.25 867 850 202.9
D 13 174 323441 1590.19 867 850 202.9
D 2 250 43656 211.01 867 850 202.9

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