ASTROSAT CZTI

Data Quality Report

Orbit 14502

Creation date: 2024-06-27T16:56:05.441148
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_066T01_9000002138_14502cztM0_level2.evt modeM0/AS1G08_066T01_9000002138_14502cztM0_level2_quad_clean.evt
Size (bytes)466,464,96088,326,720
Size444.9 MB 84.2 MB
Events in quadrant A3,255,954564,477
Events in quadrant B3,726,014575,144
Events in quadrant C3,467,176562,944
Events in quadrant D3,258,894541,444

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135663
B0152832
C0140362
D0135952

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6169681.102286%
B61691312.123521%
C6169580.940185%
D6169931.507538%

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 7480 6171 0 0 0.00% 0.00%
B 7480 6171 29 29 0.39% 0.47%
C 7480 6171 8 8 0.11% 0.13%
D 7480 6171 30 30 0.40% 0.49%

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 12 189 53511 320.39 824 810 164.5
A 8 15 11177 63.02 824 810 164.5
A 0 226 7550 40.97 824 810 164.5
B 5 29 201490 1317.23 825 808 152.4
B 4 142 92929 604.66 825 808 152.4
B 10 249 54143 350.08 825 808 152.4
C 0 207 156424 848.12 807 815 183.5
C 3 233 139862 757.85 807 815 183.5
C 5 37 21873 114.77 807 815 183.5
D 10 199 173189 919.59 797 780 187.5
D 2 234 20125 103.18 797 780 187.5
D 2 152 18517 94.6 797 780 187.5

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