ASTROSAT CZTI

Data Quality Report

Orbit 09136

Creation date: 2024-06-27T15:41:44.504840
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_046T01_9000001274_09136cztM0_level2.evt modeM0/AS1G07_046T01_9000001274_09136cztM0_level2_quad_clean.evt
Size (bytes)501,071,04082,065,600
Size477.9 MB 78.3 MB
Events in quadrant A4,430,328494,635
Events in quadrant B3,530,184507,660
Events in quadrant C3,317,757496,438
Events in quadrant D3,408,713486,162

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175243
B0149792
C0148812
D0152322

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71772964.124286%
B71771852.577679%
C71771281.783475%
D71771522.117877%

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 7682 7177 92 92 1.20% 1.28%
B 7682 7177 1 1 0.01% 0.01%
C 7682 7177 0 0 0.00% 0.00%
D 7682 7177 9 9 0.12% 0.13%

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 8 5 487134 2713.53 876 855 179.2
A 15 223 250400 1392.51 876 855 179.2
A 15 236 96676 534.7 876 855 179.2
B 0 214 102322 587.1 880 860 172.8
B 12 111 19772 109.43 880 860 172.8
B 11 111 15977 87.47 880 860 172.8
C 13 61 6408 27.88 848 850 199.4
C 14 234 6331 27.49 848 850 199.4
C 8 222 2629 8.92 848 850 199.4
D 2 14 78132 370.63 855 832 208.6
D 1 52 55379 261.53 855 832 208.6
D 2 234 26456 122.86 855 832 208.6

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