ASTROSAT CZTI

Data Quality Report

Orbit 12144

Creation date: 2024-06-27T16:23:00.269243
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_065T01_9000001796_12144cztM0_level2.evt modeM0/AS1G08_065T01_9000001796_12144cztM0_level2_quad_clean.evt
Size (bytes)496,753,92082,028,160
Size473.7 MB 78.2 MB
Events in quadrant A3,337,198526,248
Events in quadrant B4,408,419515,372
Events in quadrant C3,090,418517,992
Events in quadrant D3,793,137497,133

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138192
B0171881
C0128841
D0155361

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61171151.880007%
B61173686.016021%
C6117811.324179%
D61172133.482099%

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 7443 6118 4 4 0.05% 0.07%
B 7443 6119 164 164 2.20% 2.68%
C 7443 6119 0 0 0.00% 0.00%
D 7443 6119 104 104 1.40% 1.70%

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 58389 359.72 810 798 160.1
A 1 162 56584 348.44 810 798 160.1
A 1 178 25941 157.04 810 798 160.1
B 4 239 618357 4221.27 793 776 146.3
B 0 85 225850 1538.42 793 776 146.3
B 3 64 146914 998.88 793 776 146.3
C 13 61 5809 27.99 790 794 179.2
C 4 175 5504 26.29 790 794 179.2
C 15 208 2706 10.67 790 794 179.2
D 1 52 337733 1807.52 783 761 186.4
D 5 222 127915 682.05 783 761 186.4
D 8 195 96293 512.43 783 761 186.4

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