ASTROSAT CZTI

Data Quality Report

Orbit 20379

Creation date: 2024-06-27T18:14:37.681785
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/AS1A05_205T01_9000003012_20379cztM0_level2.evt modeM0/AS1A05_205T01_9000003012_20379cztM0_level2_quad_clean.evt
Size (bytes)428,457,60094,893,120
Size408.6 MB 90.5 MB
Events in quadrant A3,057,394619,470
Events in quadrant B3,247,509642,940
Events in quadrant C3,091,676607,779
Events in quadrant D3,166,761579,591

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129032
B0133672
C0128672
D0134512

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6074160.263418%
B6074540.889035%
C6073420.691586%
D6073350.576321%

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 7414 6075 1 1 0.01% 0.02%
B 7414 6075 13 13 0.18% 0.21%
C 7413 6074 0 0 0.00% 0.00%
D 7413 6074 13 13 0.18% 0.21%

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 5 16 16399 98.97 788 774 157.9
A 0 226 6900 38.8 788 774 157.9
A 13 254 6630 37.09 788 774 157.9
B 7 220 50456 334.01 799 782 148.7
B 15 222 20362 131.65 799 782 148.7
B 12 111 17390 111.67 799 782 148.7
C 14 238 120744 684.47 758 764 175.3
C 3 233 8748 45.55 758 764 175.3
C 1 16 6762 34.22 758 764 175.3
D 1 52 134261 730.26 756 736 182.8
D 13 153 65286 353.03 756 736 182.8
D 2 234 31736 169.54 756 736 182.8

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