ASTROSAT CZTI

Data Quality Report

Orbit 07231

Creation date: 2024-06-27T15:17:35.851302
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/AS1G06_036T01_9000000988_07231cztM0_level2.evt modeM0/AS1G06_036T01_9000000988_07231cztM0_level2_quad_clean.evt
Size (bytes)536,192,64092,707,200
Size511.4 MB 88.4 MB
Events in quadrant A3,272,885584,110
Events in quadrant B3,756,300595,212
Events in quadrant C4,511,558590,269
Events in quadrant D4,234,372561,395

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143302
B0155511
C0177971
D0175261

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6841570.833212%
B68411452.119573%
C68411121.637188%
D68411402.046484%

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 7711 6841 1 1 0.01% 0.01%
B 7711 6841 77 77 1.00% 1.13%
C 7711 6842 40 40 0.52% 0.58%
D 7711 6841 60 60 0.78% 0.88%

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 15 161356 966.44 804 785 166.1
A 3 1 9622 53.19 804 785 166.1
A 15 174 8055 43.76 804 785 166.1
B 10 16 456158 2924.23 803 783 155.7
B 0 214 132823 847.91 803 783 155.7
B 12 111 15997 97.7 803 783 155.7
C 9 68 1475844 8094.83 776 779 182.2
C 10 22 6321 30.41 776 779 182.2
C 13 61 5981 28.55 776 779 182.2
D 2 216 996038 5166.5 778 753 192.6
D 14 34 153735 794.13 778 753 192.6
D 2 14 126070 650.52 778 753 192.6

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