ASTROSAT CZTI

Data Quality Report

Orbit 04461

Creation date: 2024-06-27T14:42:21.887519
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_253T01_9000000560_04461cztM0_level2.evt modeM0/AS1G05_253T01_9000000560_04461cztM0_level2_quad_clean.evt
Size (bytes)469,019,52080,101,440
Size447.3 MB 76.4 MB
Events in quadrant A3,338,704480,785
Events in quadrant B3,480,284481,578
Events in quadrant C3,401,545487,388
Events in quadrant D3,489,876470,351

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150523
B0151214
C0151722
D0154992

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72631752.409473%
B72621672.299642%
C72631261.734820%
D72641522.092511%

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 7713 7265 5 5 0.06% 0.07%
B 7713 7265 2 2 0.03% 0.03%
C 7713 7265 2 2 0.03% 0.03%
D 7714 7266 17 17 0.22% 0.23%

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 13 44222 247.49 850 828 175.3
A 0 118 14952 80.55 850 828 175.3
A 0 226 9818 51.27 850 828 175.3
B 4 170 40710 240.8 859 836 165.6
B 15 185 35961 212.12 859 836 165.6
B 4 48 23280 135.54 859 836 165.6
C 14 48 64710 329.95 832 834 193.6
C 9 16 44756 226.88 832 834 193.6
C 10 65 22214 110.44 832 834 193.6
D 13 235 105159 524.8 828 802 198.9
D 2 136 48320 238.96 828 802 198.9
D 2 63 43593 215.19 828 802 198.9

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