ASTROSAT CZTI

Data Quality Report

Orbit 05139

Creation date: 2024-06-27T14:51:50.970722
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/AS1G05_102T01_9000000650_05139cztM0_level2.evt modeM0/AS1G05_102T01_9000000650_05139cztM0_level2_quad_clean.evt
Size (bytes)491,411,52077,005,440
Size468.6 MB 73.4 MB
Events in quadrant A3,291,495472,906
Events in quadrant B3,665,368475,078
Events in quadrant C3,249,071474,464
Events in quadrant D4,227,344447,973

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139283
B0148682
C0139562
D0169112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66121602.419843%
B66122103.176044%
C66121732.616455%
D66123475.248034%

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 9107 6613 3 3 0.03% 0.05%
B 9107 6614 23 23 0.25% 0.35%
C 9107 6614 0 0 0.00% 0.00%
D 9107 6614 104 104 1.14% 1.57%

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 0 50 41791 237.06 845 826 172.8
A 12 194 8296 43.23 845 826 172.8
A 0 226 8224 42.81 845 826 172.8
B 8 3 232098 1424.98 851 832 162.3
B 4 80 41711 251.88 851 832 162.3
B 10 16 22759 135.11 851 832 162.3
C 12 4 16380 81.87 823 828 189.9
C 1 16 13633 67.41 823 828 189.9
C 13 61 6610 30.44 823 828 189.9
D 2 33 873760 4352.21 818 793 200.6
D 1 239 104601 517.54 818 793 200.6
D 12 233 85240 421.01 818 793 200.6

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