ASTROSAT CZTI

Data Quality Report

Orbit 09436

Creation date: 2024-06-27T15:45:55.734298
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/AS1A02_178T01_9000001340_09436cztM0_level2.evt modeM0/AS1A02_178T01_9000001340_09436cztM0_level2_quad_clean.evt
Size (bytes)480,991,680109,051,200
Size458.7 MB 104.0 MB
Events in quadrant A4,016,341731,222
Events in quadrant B3,427,770723,581
Events in quadrant C3,164,679699,308
Events in quadrant D3,517,574695,969

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161093
B0144412
C0137272
D0145932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64901141.756549%
B6490811.248074%
C6490460.708783%
D6490731.124807%

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 7780 6491 8 8 0.10% 0.12%
B 7780 6491 8 8 0.10% 0.12%
C 7780 6491 0 0 0.00% 0.00%
D 7780 6491 16 16 0.21% 0.25%

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 641562 3723.91 846 831 172.1
A 1 162 56238 322.02 846 831 172.1
A 14 111 18223 101.08 846 831 172.1
B 0 246 46796 291.73 832 817 157.6
B 0 214 46790 291.7 832 817 157.6
B 0 219 34054 210.89 832 817 157.6
C 9 68 53297 288.57 796 801 181.9
C 13 61 6251 29.96 796 801 181.9
C 14 234 2669 10.27 796 801 181.9
D 8 195 274915 1305.2 810 791 210.0
D 7 71 46454 217.42 810 791 210.0
D 12 227 42381 198.02 810 791 210.0

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