ASTROSAT CZTI

Data Quality Report

Orbit 28216

Creation date: 2024-06-27T19:49:17.011957
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_045T09_9000004072_28216cztM0_level2.evt modeM0/AS1A10_045T09_9000004072_28216cztM0_level2_quad_clean.evt
Size (bytes)584,438,400100,797,120
Size557.4 MB 96.1 MB
Events in quadrant A3,440,485651,206
Events in quadrant B3,547,187666,358
Events in quadrant C3,513,570631,163
Events in quadrant D6,700,769592,412

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151140
B0153200
C0151960
D0250720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73361472.003817%
B73371772.412430%
C73362152.930752%
D73365537.538168%

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 7426 7337 0 0 0.00% 0.00%
B 7427 7337 3 3 0.04% 0.04%
C 7426 7336 0 0 0.00% 0.00%
D 7426 7336 434 434 5.84% 5.92%

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 55.11 888 868 180.6
A 3 137 9034 45.22 888 868 180.6
A 12 16 8995 45.0 888 868 180.6
B 10 246 26850 152.72 879 856 170.2
B 0 183 26719 151.95 879 856 170.2
B 12 111 21828 123.22 879 856 170.2
C 14 238 134556 668.49 847 849 200.0
C 3 233 34652 169.0 847 849 200.0
C 1 16 17600 83.75 847 849 200.0
D 1 52 2283952 11397.2 839 818 200.3
D 7 80 681478 3397.79 839 818 200.3
D 5 222 263948 1313.52 839 818 200.3

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