ASTROSAT CZTI

Data Quality Report

Orbit 19805

Creation date: 2024-06-27T18:07:18.995236
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/AS1C04_009T06_9000002960_19805cztM0_level2.evt modeM0/AS1C04_009T06_9000002960_19805cztM0_level2_quad_clean.evt
Size (bytes)615,939,840134,645,760
Size587.4 MB 128.4 MB
Events in quadrant A3,327,211926,783
Events in quadrant B3,489,079941,448
Events in quadrant C3,389,511917,142
Events in quadrant D7,941,845773,171

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152302
B0155392
C0152752
D0289562

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7461811.085645%
B74611061.420721%
C7461690.924809%
D7460181124.276139%

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 7791 7462 0 0 0.00% 0.00%
B 7791 7461 6 6 0.08% 0.08%
C 7791 7462 0 0 0.00% 0.00%
D 7790 7460 1596 1596 20.49% 21.39%

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 0 226 7550 38.04 864 842 176.3
A 3 137 7123 35.62 864 842 176.3
A 12 194 6337 31.16 864 842 176.3
B 7 220 33723 200.54 864 840 164.0
B 0 197 26279 155.14 864 840 164.0
B 4 216 20902 122.35 864 840 164.0
C 14 238 130564 671.59 831 836 193.2
C 3 233 18939 93.72 831 836 193.2
C 13 61 5920 26.32 831 836 193.2
D 7 238 3340904 18744.46 739 715 178.2
D 7 38 1199699 6728.45 739 715 178.2
D 2 69 236282 1321.95 739 715 178.2

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