ASTROSAT CZTI

Data Quality Report

Orbit 27491

Creation date: 2024-06-27T19:40:35.866323
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_249T01_9000003934_27491cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27491cztM0_level2_quad_clean.evt
Size (bytes)498,562,56092,954,880
Size475.5 MB 88.6 MB
Events in quadrant A3,346,855593,950
Events in quadrant B3,647,821598,862
Events in quadrant C3,397,546572,350
Events in quadrant D4,232,683563,629

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142610
B0150540
C0143810
D0171640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69781101.576383%
B69771882.694568%
C69771251.791601%
D69781381.977644%

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 7458 6978 0 0 0.00% 0.00%
B 7457 6977 67 67 0.90% 0.96%
C 7457 6977 1 1 0.01% 0.01%
D 7458 6978 48 48 0.64% 0.69%

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 11778 62.61 866 845 174.6
A 3 137 8171 41.95 866 845 174.6
A 0 226 7572 38.52 866 845 174.6
B 3 64 245824 1493.89 853 832 164.0
B 0 230 29367 174.0 853 832 164.0
B 12 111 20352 119.03 853 832 164.0
C 14 238 129632 662.21 827 832 194.5
C 2 16 31193 156.1 827 832 194.5
C 10 5 11897 56.89 827 832 194.5
D 1 52 858875 4276.83 835 813 200.6
D 12 227 77630 382.88 835 813 200.6
D 2 250 60359 296.79 835 813 200.6

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