ASTROSAT CZTI

Data Quality Report

Orbit 16539

Creation date: 2024-06-27T17:24:08.026555
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_018T01_9000002442_16539cztM0_level2.evt modeM0/AS1T03_018T01_9000002442_16539cztM0_level2_quad_clean.evt
Size (bytes)466,859,52090,987,840
Size445.2 MB 86.8 MB
Events in quadrant A3,199,258578,180
Events in quadrant B3,775,937585,712
Events in quadrant C3,343,035572,165
Events in quadrant D3,370,366557,112

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138182
B0154371
C0141101
D0142601

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6632540.814234%
B6632841.266586%
C6632781.176116%
D6632761.145959%

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 7623 6633 8 8 0.10% 0.12%
B 7623 6633 13 13 0.17% 0.20%
C 7623 6633 4 4 0.05% 0.06%
D 7623 6633 30 30 0.39% 0.45%

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 61107 367.92 805 788 163.9
A 3 1 39319 235.02 805 788 163.9
A 0 226 6954 37.61 805 788 163.9
B 0 85 243581 1566.1 804 784 155.0
B 15 35 119526 765.92 804 784 155.0
B 0 229 69769 444.97 804 784 155.0
C 3 233 215000 1195.31 766 772 179.2
C 14 238 117757 652.73 766 772 179.2
C 7 247 14911 78.89 766 772 179.2
D 1 52 254267 1337.25 776 753 189.6
D 2 33 87451 457.32 776 753 189.6
D 10 70 46558 241.62 776 753 189.6

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