ASTROSAT CZTI

Data Quality Report

Orbit 13253

Creation date: 2024-06-27T16:38:24.462243
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/AS1G08_077T01_9000001970_13253cztM0_level2.evt modeM0/AS1G08_077T01_9000001970_13253cztM0_level2_quad_clean.evt
Size (bytes)474,955,20083,975,040
Size453.0 MB 80.1 MB
Events in quadrant A3,273,915520,405
Events in quadrant B4,035,006522,162
Events in quadrant C3,118,839527,289
Events in quadrant D3,501,792506,696

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141263
B0163602
C0138032
D0149922

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6683781.167141%
B66832523.770762%
C6683711.062397%
D66831031.541224%

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 8464 6686 1 1 0.01% 0.01%
B 8464 6686 131 131 1.55% 1.96%
C 8464 6686 5 5 0.06% 0.07%
D 8463 6685 25 25 0.30% 0.37%

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 15 239 116528 711.91 802 781 162.6
A 1 162 31124 186.63 802 781 162.6
A 15 69 14011 81.37 802 781 162.6
B 4 239 825260 5442.58 793 773 151.5
B 3 64 33120 213.52 793 773 151.5
B 0 230 26224 168.0 793 773 151.5
C 15 208 55837 305.63 783 788 180.1
C 14 234 9702 49.49 783 788 180.1
C 13 61 5573 26.57 783 788 180.1
D 1 52 410070 2200.15 777 755 186.0
D 8 195 61275 325.31 777 755 186.0
D 5 222 49037 259.52 777 755 186.0

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter