ASTROSAT CZTI

Data Quality Report

Orbit 22150

Creation date: 2024-06-27T18:37:29.272334
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/AS1T03_145T01_9000003278_22150cztM0_level2.evt modeM0/AS1T03_145T01_9000003278_22150cztM0_level2_quad_clean.evt
Size (bytes)447,981,12098,858,880
Size427.2 MB 94.3 MB
Events in quadrant A3,235,305637,915
Events in quadrant B3,342,429645,141
Events in quadrant C3,245,277616,844
Events in quadrant D3,274,686612,958

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141771
B0144371
C0142592
D0144691

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6904781.129780%
B6905981.419261%
C69041041.506373%
D6904500.724218%

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 7284 6905 0 0 0.00% 0.00%
B 7285 6906 3 3 0.04% 0.04%
C 7284 6905 0 0 0.00% 0.00%
D 7284 6905 7 7 0.10% 0.10%

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 10384 56.41 839 821 169.5
A 3 137 7266 38.02 839 821 169.5
A 0 226 7108 37.09 839 821 169.5
B 10 246 55531 342.3 832 812 159.9
B 12 111 20127 120.83 832 812 159.9
B 11 111 17735 105.86 832 812 159.9
C 14 238 125542 667.77 796 801 186.8
C 10 22 15353 77.9 796 801 186.8
C 13 61 5535 25.34 796 801 186.8
D 7 238 79330 401.59 810 787 195.6
D 1 52 64658 326.58 810 787 195.6
D 2 234 32636 162.85 810 787 195.6

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