ASTROSAT CZTI

Data Quality Report

Orbit 27474

Creation date: 2024-06-27T19:40:26.271187
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_27474cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27474cztM0_level2_quad_clean.evt
Size (bytes)463,392,00099,466,560
Size441.9 MB 94.9 MB
Events in quadrant A3,334,027654,917
Events in quadrant B3,432,088663,078
Events in quadrant C3,399,953625,713
Events in quadrant D3,428,214617,200

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135800
B0139260
C0138600
D0142210

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6469580.896584%
B6470991.530139%
C6470961.483771%
D6470490.757342%

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 7744 6470 0 0 0.00% 0.00%
B 7745 6470 13 13 0.17% 0.20%
C 7745 6471 1 1 0.01% 0.02%
D 7745 6470 12 12 0.15% 0.19%

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 11077 59.29 863 848 172.5
A 0 226 7624 39.28 863 848 172.5
A 3 137 7496 38.53 863 848 172.5
B 3 64 70984 437.94 852 834 160.2
B 12 111 19334 115.49 852 834 160.2
B 11 111 17170 101.98 852 834 160.2
C 14 238 132846 693.72 818 826 190.3
C 10 22 40593 208.96 818 826 190.3
C 2 16 30982 158.46 818 826 190.3
D 1 52 205909 1052.47 829 809 194.9
D 2 250 64164 325.11 829 809 194.9
D 2 234 24141 119.73 829 809 194.9

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