ASTROSAT CZTI

Data Quality Report

Orbit 16921

Creation date: 2024-06-27T17:29:32.047110
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_030T01_9000002512_16921cztM0_level2.evt modeM0/AS1T03_030T01_9000002512_16921cztM0_level2_quad_clean.evt
Size (bytes)600,946,56070,260,480
Size573.1 MB 67.0 MB
Events in quadrant A7,053,740430,216
Events in quadrant B3,409,448450,717
Events in quadrant C3,417,981422,124
Events in quadrant D3,895,678388,634

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0251512
B0137752
C0137032
D0154132

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6234140422.521655%
B62341241.989092%
C62331262.021498%
D62333976.369325%

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 7530 6236 846 846 11.24% 13.57%
B 7530 6236 3 3 0.04% 0.05%
C 7529 6235 0 0 0.00% 0.00%
D 7529 6235 62 62 0.82% 0.99%

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 15 174 4016764 25632.06 790 776 156.7
A 0 226 7049 40.04 790 776 156.7
A 12 194 5746 31.72 790 776 156.7
B 15 35 43219 262.97 848 829 161.2
B 3 64 25051 150.26 848 829 161.2
B 0 197 23574 141.1 848 829 161.2
C 3 233 185592 1004.28 796 803 184.0
C 14 238 125170 675.91 796 803 184.0
C 13 61 5615 26.15 796 803 184.0
D 1 52 776547 4119.43 784 763 188.3
D 2 152 76828 403.91 784 763 188.3
D 12 235 48124 251.49 784 763 188.3

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