ASTROSAT CZTI

Data Quality Report

Orbit 04037

Creation date: 2024-06-27T14:36:37.175044
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/AS1G05_246T03_9000000516_04037cztM0_level2.evt modeM0/AS1G05_246T03_9000000516_04037cztM0_level2_quad_clean.evt
Size (bytes)462,545,28076,348,800
Size441.1 MB 72.8 MB
Events in quadrant A3,488,461461,900
Events in quadrant B3,394,965486,449
Events in quadrant C2,856,681495,534
Events in quadrant D3,848,875437,089

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146892
B0142981
C0128131
D0159641

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61752694.356275%
B6175811.311741%
C6175280.453441%
D61753315.360324%

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 7450 6176 228 228 3.06% 3.69%
B 7450 6176 50 50 0.67% 0.81%
C 7450 6176 10 10 0.13% 0.16%
D 7450 6176 304 304 4.08% 4.92%

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 50 703533 4985.23 695 681 141.0
A 8 15 36851 256.55 695 681 141.0
A 0 118 32293 224.22 695 681 141.0
B 10 16 295241 2146.59 723 707 137.2
B 15 204 117861 853.83 723 707 137.2
B 14 167 80801 583.73 723 707 137.2
C 9 144 61200 367.19 710 715 164.7
C 12 4 10546 59.68 710 715 164.7
C 1 16 9537 53.56 710 715 164.7
D 13 53 713976 4464.16 666 648 159.8
D 11 132 436267 2726.2 666 648 159.8
D 2 232 97589 606.68 666 648 159.8

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