ASTROSAT CZTI

Data Quality Report

Orbit 05577

Creation date: 2024-06-27T14:56:50.616067
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/AS1A02_081T01_9000000720_05577cztM0_level2.evt modeM0/AS1A02_081T01_9000000720_05577cztM0_level2_quad_clean.evt
Size (bytes)541,736,640103,815,360
Size516.6 MB 99.0 MB
Events in quadrant A3,751,406662,058
Events in quadrant B4,378,612660,783
Events in quadrant C3,746,907642,967
Events in quadrant D3,978,513613,921

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169923
B0186122
C0170092
D0176532

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8118640.788372%
B81181411.736881%
C8118560.689825%
D8118480.591279%

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 8703 8121 3 3 0.03% 0.04%
B 8703 8121 21 21 0.24% 0.26%
C 8703 8121 7 7 0.08% 0.09%
D 8703 8121 17 17 0.20% 0.21%

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 15 174 29372 145.47 955 934 195.5
A 7 16 17558 85.03 955 934 195.5
A 13 14 15557 74.8 955 934 195.5
B 15 204 190735 1016.37 965 939 186.7
B 0 214 101786 540.04 965 939 186.7
B 11 51 88533 469.07 965 939 186.7
C 9 16 65885 298.05 933 934 217.9
C 8 128 16746 72.56 933 934 217.9
C 8 112 8171 33.21 933 934 217.9
D 8 195 144316 626.8 928 896 228.8
D 2 33 103592 448.82 928 896 228.8
D 2 152 73183 315.92 928 896 228.8

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