ASTROSAT CZTI

Data Quality Report

Orbit 27861

Creation date: 2024-06-27T19:45:17.742537
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_002T05_9000004024_27861cztM0_level2.evt modeM0/AS1A10_002T05_9000004024_27861cztM0_level2_quad_clean.evt
Size (bytes)500,878,08088,698,240
Size477.7 MB 84.6 MB
Events in quadrant A3,364,196579,342
Events in quadrant B3,425,973574,650
Events in quadrant C3,428,075546,960
Events in quadrant D4,503,141525,011

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141140
B0142970
C0141820
D0175450

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6596721.091571%
B6596811.228017%
C65961141.728320%
D65963395.139478%

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 7686 6596 0 0 0.00% 0.00%
B 7686 6596 0 0 0.00% 0.00%
C 7686 6596 2 2 0.03% 0.03%
D 7686 6596 308 308 4.01% 4.67%

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 10822 56.84 872 855 175.4
A 3 137 7988 40.68 872 855 175.4
A 0 226 7396 37.3 872 855 175.4
B 0 190 39041 236.69 854 832 161.4
B 0 230 23612 141.11 854 832 161.4
B 12 111 19817 117.6 854 832 161.4
C 14 238 134390 704.04 817 822 189.7
C 3 233 76646 399.67 817 822 189.7
C 15 208 22826 115.98 817 822 189.7
D 1 52 1213521 6320.12 818 796 191.9
D 2 250 180957 938.91 818 796 191.9
D 2 234 24354 122.77 818 796 191.9

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