ASTROSAT CZTI

Data Quality Report

Orbit 30765

Creation date: 2024-06-27T20:19:23.216130
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_071T12_9000004446_30765cztM0_level2.evt modeM0/AS1A10_071T12_9000004446_30765cztM0_level2_quad_clean.evt
Size (bytes)805,835,520104,618,880
Size768.5 MB 99.8 MB
Events in quadrant A4,023,723693,457
Events in quadrant B6,043,941688,254
Events in quadrant C3,940,438666,715
Events in quadrant D9,882,561588,777

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169321
B0236911
C0163201
D0346721

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76252092.740984%
B76252903.803279%
C76252152.819672%
D7626149819.643325%

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 7870 7625 29 29 0.37% 0.38%
B 7870 7625 31 31 0.39% 0.41%
C 7870 7625 0 0 0.00% 0.00%
D 7871 7626 1723 1723 21.89% 22.59%

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 13 312850 1593.78 962 940 195.7
A 13 254 13156 62.42 962 940 195.7
A 3 137 10059 46.6 962 940 195.7
B 6 159 2065651 11297.94 942 917 182.8
B 4 80 133751 726.85 942 917 182.8
B 0 190 34253 182.41 942 917 182.8
C 14 238 145271 658.63 921 928 219.2
C 3 233 101755 460.07 921 928 219.2
C 15 208 27799 122.61 921 928 219.2
D 8 195 4568805 20500.42 885 864 222.8
D 12 218 1387713 6224.03 885 864 222.8
D 13 249 233252 1042.93 885 864 222.8

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