ASTROSAT CZTI

Data Quality Report

Orbit 12523

Creation date: 2024-06-27T16:28:37.370660
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/AS1A04_230T01_9000001854_12523cztM0_level2.evt modeM0/AS1A04_230T01_9000001854_12523cztM0_level2_quad_clean.evt
Size (bytes)431,196,48086,503,680
Size411.2 MB 82.5 MB
Events in quadrant A3,317,457547,843
Events in quadrant B3,285,741556,746
Events in quadrant C2,927,086543,442
Events in quadrant D3,080,063511,783

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142522
B0142521
C0134581
D0140971

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6592360.546117%
B6592811.228762%
C6592110.166869%
D6592510.773665%

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 7233 6594 0 0 0.00% 0.00%
B 7233 6594 14 14 0.19% 0.21%
C 7233 6594 1 1 0.01% 0.02%
D 7233 6594 33 33 0.46% 0.50%

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 12 189 89859 561.89 776 761 158.6
A 1 162 63267 394.19 776 761 158.6
A 8 15 52301 325.04 776 761 158.6
B 4 239 189526 1251.83 778 759 150.8
B 3 64 26719 172.16 778 759 150.8
B 0 214 22490 144.11 778 759 150.8
C 14 234 7038 35.92 749 753 175.0
C 13 61 5446 26.82 749 753 175.0
C 3 233 2366 9.22 749 753 175.0
D 1 52 68057 378.88 737 715 177.7
D 13 104 67543 375.99 737 715 177.7
D 13 249 50656 280.98 737 715 177.7

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