ASTROSAT CZTI

Data Quality Report

Orbit 29139

Creation date: 2024-06-27T20:00:42.817610
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/AS1A10_099T01_9000004184_29139cztM0_level2.evt modeM0/AS1A10_099T01_9000004184_29139cztM0_level2_quad_clean.evt
Size (bytes)510,690,24097,755,840
Size487.0 MB 93.2 MB
Events in quadrant A3,321,429651,790
Events in quadrant B3,448,785665,408
Events in quadrant C3,364,295620,876
Events in quadrant D4,914,087592,446

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137242
B0141632
C0137852
D0188142

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61571011.640409%
B61571292.095176%
C61571482.403768%
D61572554.141627%

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 7482 6158 0 0 0.00% 0.00%
B 7482 6158 11 11 0.15% 0.18%
C 7482 6158 0 0 0.00% 0.00%
D 7482 6158 116 116 1.55% 1.88%

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 13 254 10820 57.98 859 845 172.1
A 3 137 7865 40.8 859 845 172.1
A 0 226 7316 37.61 859 845 172.1
B 0 229 37554 230.77 854 836 159.1
B 10 246 26870 163.62 854 836 159.1
B 0 183 23580 142.94 854 836 159.1
C 14 238 132129 692.85 814 822 189.5
C 3 233 39127 202.12 814 822 189.5
C 2 114 14613 72.77 814 822 189.5
D 1 52 1000857 5235.35 805 785 191.0
D 8 195 709171 3708.38 805 785 191.0
D 12 233 75156 389.33 805 785 191.0

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