ASTROSAT CZTI

Data Quality Report

Orbit 27245

Creation date: 2024-06-27T19:38:09.368853
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_243T01_9000003918_27245cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27245cztM0_level2_quad_clean.evt
Size (bytes)517,518,720100,621,440
Size493.5 MB 96.0 MB
Events in quadrant A3,435,927655,875
Events in quadrant B3,660,279661,416
Events in quadrant C3,453,855631,832
Events in quadrant D4,642,389605,132

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147700
B0152690
C0147750
D0184980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7077520.734775%
B70771602.260845%
C70771121.582591%
D70772954.168433%

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 7597 7079 2 2 0.03% 0.03%
B 7597 7079 12 12 0.16% 0.17%
C 7597 7079 5 5 0.07% 0.07%
D 7597 7079 249 249 3.28% 3.52%

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 13 248 19793 106.33 882 865 178.0
A 8 192 12205 63.7 882 865 178.0
A 13 254 11116 57.58 882 865 178.0
B 15 33 155759 925.79 875 855 167.3
B 0 245 20447 117.09 875 855 167.3
B 12 111 20133 115.22 875 855 167.3
C 14 238 135152 681.18 838 841 197.2
C 15 208 43505 216.38 838 841 197.2
C 13 61 5832 25.31 838 841 197.2
D 1 52 1051553 4896.09 830 812 214.6
D 2 250 225913 1048.89 830 812 214.6
D 7 38 78074 360.01 830 812 214.6

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