ASTROSAT CZTI

Data Quality Report

Orbit 24576

Creation date: 2024-06-27T19:07:27.972144
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_183T01_9000003610_24576cztM0_level2.evt modeM0/AS1T03_183T01_9000003610_24576cztM0_level2_quad_clean.evt
Size (bytes)558,267,840121,199,040
Size532.4 MB 115.6 MB
Events in quadrant A3,519,641829,259
Events in quadrant B3,550,219837,104
Events in quadrant C4,767,418774,918
Events in quadrant D4,623,583769,986

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148671
B0149221
C0187151
D0183051

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6597841.273306%
B6598951.439830%
C65982924.425584%
D65981632.470446%

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 7817 6597 0 0 0.00% 0.00%
B 7818 6598 0 0 0.00% 0.00%
C 7818 6598 79 79 1.01% 1.20%
D 7818 6599 62 62 0.79% 0.94%

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 11231 58.03 912 896 178.1
A 0 226 7973 39.74 912 896 178.1
A 3 137 7459 36.85 912 896 178.1
B 12 111 18884 109.26 897 876 164.8
B 3 64 18820 108.88 897 876 164.8
B 0 190 17868 103.1 897 876 164.8
C 10 9 673501 3489.05 849 856 192.8
C 2 16 317220 1641.0 849 856 192.8
C 7 247 298170 1542.18 849 856 192.8
D 12 218 619427 2999.35 870 848 206.2
D 8 195 545530 2641.04 870 848 206.2
D 7 238 99284 477.29 870 848 206.2

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