ASTROSAT CZTI

Data Quality Report

Orbit 14537

Creation date: 2024-06-27T16:56:35.538689
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/AS1T02_049T01_9000002142_14537cztM0_level2.evt modeM0/AS1T02_049T01_9000002142_14537cztM0_level2_quad_clean.evt
Size (bytes)522,005,760117,740,160
Size497.8 MB 112.3 MB
Events in quadrant A3,726,457767,085
Events in quadrant B3,764,353770,051
Events in quadrant C4,195,401766,934
Events in quadrant D3,614,884741,442

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159693
B0159982
C0170242
D0162542

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74751401.872910%
B74751802.408027%
C74751592.127090%
D74751211.618729%

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 7661 7479 1 1 0.01% 0.01%
B 7661 7479 22 22 0.29% 0.29%
C 7661 7479 39 39 0.51% 0.52%
D 7661 7479 46 46 0.60% 0.62%

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 23 193788 1097.61 858 837 175.8
A 8 15 167699 949.2 858 837 175.8
A 12 189 44321 247.36 858 837 175.8
B 4 142 81312 491.23 861 838 163.8
B 0 189 55722 335.02 861 838 163.8
B 0 245 50218 301.43 861 838 163.8
C 3 233 907919 4709.52 835 838 192.6
C 14 234 11295 54.29 835 838 192.6
C 8 128 9987 47.5 835 838 192.6
D 10 199 161673 802.44 829 800 200.5
D 12 110 135066 669.73 829 800 200.5
D 13 122 58341 287.02 829 800 200.5

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