ASTROSAT CZTI

Data Quality Report

Orbit 19657

Creation date: 2024-06-27T18:05:18.180258
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_005T01_9000002928_19657cztM0_level2.evt modeM0/AS1T03_005T01_9000002928_19657cztM0_level2_quad_clean.evt
Size (bytes)454,743,36067,023,360
Size433.7 MB 63.9 MB
Events in quadrant A3,274,259405,418
Events in quadrant B3,467,050413,701
Events in quadrant C3,301,386384,566
Events in quadrant D3,292,014376,518

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133821
B0139531
C0134861
D0138111

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6438210.326188%
B6438560.869835%
C6439560.869700%
D6439120.186364%

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 7798 6439 0 0 0.00% 0.00%
B 7798 6439 14 14 0.18% 0.22%
C 7799 6440 0 0 0.00% 0.00%
D 7799 6440 6 6 0.08% 0.09%

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 0 226 7224 37.81 849 835 169.0
A 3 137 6369 32.75 849 835 169.0
A 13 254 6316 32.44 849 835 169.0
B 3 112 71453 443.02 848 832 159.4
B 7 220 29945 182.63 848 832 159.4
B 12 111 18430 110.4 848 832 159.4
C 14 238 127546 681.71 803 813 185.9
C 3 233 15505 79.03 803 813 185.9
C 4 175 14703 74.72 803 813 185.9
D 1 52 147544 756.78 807 785 193.9
D 1 20 28829 144.61 807 785 193.9
D 10 199 24335 121.44 807 785 193.9

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