ASTROSAT CZTI

Data Quality Report

Orbit 13519

Creation date: 2024-06-27T16:41:59.996491
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/AS1T02_020T01_9000001990_13519cztM0_level2.evt modeM0/AS1T02_020T01_9000001990_13519cztM0_level2_quad_clean.evt
Size (bytes)513,345,60079,649,280
Size489.6 MB 76.0 MB
Events in quadrant A3,527,742495,060
Events in quadrant B3,816,802527,023
Events in quadrant C3,808,479478,311
Events in quadrant D3,946,207451,443

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144443
B0153472
C0154102
D0157672

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65971412.137335%
B65971692.561771%
C6597951.440049%
D65971261.909959%

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 7848 6598 4 4 0.05% 0.06%
B 7848 6598 27 27 0.34% 0.41%
C 7848 6598 0 0 0.00% 0.00%
D 7848 6598 13 13 0.17% 0.20%

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 1 162 34757 188.07 897 881 180.1
A 15 69 16001 83.94 897 881 180.1
A 1 178 11640 59.73 897 881 180.1
B 3 64 184867 1106.21 896 879 166.3
B 0 189 44061 259.63 896 879 166.3
B 3 209 32714 191.4 896 879 166.3
C 3 233 469617 2412.57 855 860 194.3
C 13 61 6202 27.49 855 860 194.3
C 0 207 4648 19.5 855 860 194.3
D 12 110 390810 1920.28 859 837 203.1
D 8 195 178611 875.38 859 837 203.1
D 13 104 103108 503.6 859 837 203.1

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