ASTROSAT CZTI

Data Quality Report

Orbit 03101

Creation date: 2024-06-27T14:24:39.672527
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_237T03_9000000426_03101cztM0_level2.evt modeM0/AS1G05_237T03_9000000426_03101cztM0_level2_quad_clean.evt
Size (bytes)532,670,40079,306,560
Size508.0 MB 75.6 MB
Events in quadrant A3,771,138471,061
Events in quadrant B4,098,494469,651
Events in quadrant C3,859,757470,973
Events in quadrant D3,881,391455,517

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161622
B0171361
C0168851
D0171631

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76802363.072917%
B76802323.020833%
C76802062.682292%
D76802413.138021%

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 7840 7681 2 2 0.03% 0.03%
B 7840 7681 7 7 0.09% 0.09%
C 7840 7681 22 22 0.28% 0.29%
D 7840 7681 49 49 0.62% 0.64%

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 8 15 160806 853.63 917 896 187.3
A 12 247 23945 123.04 917 896 187.3
A 0 117 18438 93.64 917 896 187.3
B 15 204 226222 1229.3 928 904 183.3
B 0 219 127200 689.05 928 904 183.3
B 1 223 37130 197.64 928 904 183.3
C 1 192 130200 625.66 883 887 206.7
C 6 80 79725 381.44 883 887 206.7
C 5 250 71994 344.04 883 887 206.7
D 13 239 105532 453.34 881 858 230.9
D 13 223 75867 324.86 881 858 230.9
D 13 114 74048 316.98 881 858 230.9

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