ASTROSAT CZTI

Data Quality Report

Orbit 18918

Creation date: 2024-06-27T17:56:32.289593
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_163T01_9000002820_18918cztM0_level2.evt modeM0/AS1A05_163T01_9000002820_18918cztM0_level2_quad_clean.evt
Size (bytes)713,822,40088,577,280
Size680.8 MB 84.5 MB
Events in quadrant A10,641,237411,632
Events in quadrant B3,952,980633,861
Events in quadrant C3,253,044608,133
Events in quadrant D3,347,718591,698

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0359008
B0156111
C0132151
D0137981

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6251364858.358663%
B62521552.479207%
C6252560.895713%
D6252410.655790%

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 7611 6248 2364 2364 31.06% 37.84%
B 7613 6253 68 68 0.89% 1.09%
C 7613 6253 0 0 0.00% 0.00%
D 7613 6253 22 22 0.29% 0.35%

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 14 235 8555011 79506.46 541 532 107.6
A 13 254 5517 46.33 541 532 107.6
A 0 226 4699 38.73 541 532 107.6
B 3 112 638785 4159.55 816 799 153.4
B 7 220 24886 157.04 816 799 153.4
B 0 189 23330 146.9 816 799 153.4
C 14 238 126153 692.71 782 788 181.0
C 3 233 72903 398.47 782 788 181.0
C 6 96 7790 38.69 782 788 181.0
D 9 1 155902 796.56 793 769 194.8
D 12 218 118431 604.16 793 769 194.8
D 7 238 32659 163.75 793 769 194.8

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