ASTROSAT CZTI

Data Quality Report

Orbit 27734

Creation date: 2024-06-27T19:43:40.234098
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_263T01_9000003990_27734cztM0_level2.evt modeM0/AS1T03_263T01_9000003990_27734cztM0_level2_quad_clean.evt
Size (bytes)516,470,400147,087,360
Size492.5 MB 140.3 MB
Events in quadrant A3,924,6141,027,553
Events in quadrant B3,760,9921,051,476
Events in quadrant C3,738,1851,001,960
Events in quadrant D3,799,633943,835

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155920
B0151350
C0151850
D0152080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6173831.344565%
B61741101.781665%
C61741592.575316%
D61741131.830256%

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 7503 6174 3 3 0.04% 0.05%
B 7504 6174 18 18 0.24% 0.29%
C 7504 6174 0 0 0.00% 0.00%
D 7504 6175 78 78 1.04% 1.26%

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 6 16 395440 1953.71 912 897 201.9
A 0 13 9952 44.84 912 897 201.9
A 13 254 9735 43.76 912 897 201.9
B 5 255 44756 230.66 922 907 190.1
B 0 230 40898 210.37 922 907 190.1
B 4 171 38616 198.36 922 907 190.1
C 14 238 148952 664.64 889 897 222.8
C 3 233 119723 533.42 889 897 222.8
C 15 208 6193 23.77 889 897 222.8
D 11 176 239234 1047.36 876 853 227.6
D 2 250 116428 507.79 876 853 227.6
D 1 52 98848 430.55 876 853 227.6

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