ASTROSAT CZTI

Data Quality Report

Orbit 06272

Creation date: 2024-06-27T15:04:59.630424
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/AS1C02_018T01_9000000822_06272cztM0_level2.evt modeM0/AS1C02_018T01_9000000822_06272cztM0_level2_quad_clean.evt
Size (bytes)631,163,52092,111,040
Size601.9 MB 87.8 MB
Events in quadrant A4,879,391560,085
Events in quadrant B4,140,398574,473
Events in quadrant C3,398,621588,829
Events in quadrant D6,174,549529,669

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0195515
B0176044
C0157694
D0237324

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77051812.349124%
B77051642.128488%
C7705280.363400%
D77055887.631408%

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 8020 7708 10 10 0.12% 0.13%
B 8020 7709 60 60 0.75% 0.78%
C 8020 7709 0 0 0.00% 0.00%
D 8020 7708 478 478 5.96% 6.20%

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 8 15 1153621 6386.84 875 856 180.5
A 15 236 276310 1526.14 875 856 180.5
A 13 251 73068 400.09 875 856 180.5
B 3 64 284754 1643.37 891 868 172.7
B 0 219 177682 1023.54 891 868 172.7
B 15 204 62244 355.29 891 868 172.7
C 13 61 7002 30.56 864 867 200.7
C 8 128 6453 27.83 864 867 200.7
C 10 22 5979 25.47 864 867 200.7
D 12 220 2296049 11098.2 831 806 206.8
D 2 152 208190 1002.76 831 806 206.8
D 2 63 113160 543.27 831 806 206.8

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