ASTROSAT CZTI

Data Quality Report

Orbit 19737

Creation date: 2024-06-27T18:06:20.298383
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_001T01_9000002948_19737cztM0_level2.evt modeM0/AS1C04_001T01_9000002948_19737cztM0_level2_quad_clean.evt
Size (bytes)551,462,400128,007,360
Size525.9 MB 122.1 MB
Events in quadrant A3,234,961870,462
Events in quadrant B3,661,083874,677
Events in quadrant C3,441,616847,807
Events in quadrant D5,888,634796,230

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142642
B0155142
C0148192
D0223094

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6999430.614373%
B69991412.014574%
C6999891.271610%
D69986659.502715%

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 7814 7000 1 1 0.01% 0.01%
B 7814 6999 56 56 0.72% 0.80%
C 7814 6999 0 0 0.00% 0.00%
D 7813 6999 476 476 6.09% 6.80%

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 8 205 18081 101.84 831 812 169.6
A 0 254 9309 50.11 831 812 169.6
A 13 254 7492 39.39 831 812 169.6
B 7 220 276615 1743.95 824 803 158.2
B 4 171 40345 250.02 824 803 158.2
B 4 216 39918 247.32 824 803 158.2
C 3 233 171272 917.12 799 802 185.9
C 14 238 123794 661.69 799 802 185.9
C 10 91 25740 134.17 799 802 185.9
D 1 52 2442088 12830.0 783 758 190.3
D 13 172 129090 674.43 783 758 190.3
D 12 0 121364 633.82 783 758 190.3

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