ASTROSAT CZTI

Data Quality Report

Orbit 03621

Creation date: 2024-06-27T14:31:43.213535
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_234T02_9000000474_03621cztM0_level2.evt modeM0/AS1G05_234T02_9000000474_03621cztM0_level2_quad_clean.evt
Size (bytes)506,868,48082,428,480
Size483.4 MB 78.6 MB
Events in quadrant A3,124,226513,523
Events in quadrant B4,249,505507,799
Events in quadrant C4,051,656500,260
Events in quadrant D3,461,680498,505

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142903
B0171922
C0169792
D0153812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6836400.585138%
B6836701.023991%
C68363044.447045%
D6836931.360445%

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 7676 6837 6 6 0.08% 0.09%
B 7676 6837 7 7 0.09% 0.10%
C 7676 6836 148 148 1.93% 2.17%
D 7676 6837 68 68 0.89% 0.99%

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 7 16 35689 218.99 778 760 159.5
A 0 128 20153 121.58 778 760 159.5
A 0 118 19179 115.48 778 760 159.5
B 3 0 609097 4036.11 787 766 150.7
B 15 204 299155 1979.73 787 766 150.7
B 14 167 129763 855.86 787 766 150.7
C 9 247 971031 5525.18 752 754 175.6
C 2 53 102694 580.49 752 754 175.6
C 14 67 12894 69.13 752 754 175.6
D 7 223 243469 1340.79 759 737 181.0
D 14 34 88900 486.99 759 737 181.0
D 13 239 53451 291.18 759 737 181.0

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
Veto Counter