ASTROSAT CZTI

Data Quality Report

Orbit 15493

Creation date: 2024-06-27T17:09:17.148428
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/AS1G08_036T01_9000002290_15493cztM0_level2.evt modeM0/AS1G08_036T01_9000002290_15493cztM0_level2_quad_clean.evt
Size (bytes)520,865,280104,964,480
Size496.7 MB 100.1 MB
Events in quadrant A3,616,333675,625
Events in quadrant B3,850,803682,575
Events in quadrant C3,647,736659,875
Events in quadrant D4,150,984639,436

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157151
B0162461
C0156241
D0174191

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7492290.387080%
B7492520.694074%
C7492530.707421%
D74921051.401495%

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 7773 7494 5 5 0.06% 0.07%
B 7773 7494 6 6 0.08% 0.08%
C 7773 7494 2 2 0.03% 0.03%
D 7773 7494 78 78 1.00% 1.04%

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 4 2 45883 242.17 907 888 185.8
A 9 143 32279 168.95 907 888 185.8
A 0 253 20136 103.6 907 888 185.8
B 4 142 110745 641.59 902 879 171.2
B 0 189 42916 245.49 902 879 171.2
B 10 245 41011 234.36 902 879 171.2
C 3 233 136682 673.8 858 863 201.6
C 14 238 129749 639.4 858 863 201.6
C 9 54 32661 157.75 858 863 201.6
D 1 52 584211 2729.57 871 845 213.7
D 2 16 65941 304.58 871 845 213.7
D 7 38 39273 179.8 871 845 213.7

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