ASTROSAT CZTI

Data Quality Report

Orbit 13753

Creation date: 2024-06-27T16:45:36.925045
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/AS1G08_062T01_9000002038_13753cztM0_level2.evt modeM0/AS1G08_062T01_9000002038_13753cztM0_level2_quad_clean.evt
Size (bytes)495,190,08095,984,640
Size472.3 MB 91.5 MB
Events in quadrant A3,141,014608,186
Events in quadrant B3,458,138602,614
Events in quadrant C3,177,950632,263
Events in quadrant D4,770,417602,317

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135912
B0146041
C0135771
D0185161

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6614500.755972%
B6614821.239794%
C6614130.196553%
D66142824.263683%

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 7435 6616 1 1 0.01% 0.02%
B 7435 6616 12 12 0.16% 0.18%
C 7435 6616 0 0 0.00% 0.00%
D 7435 6616 225 225 3.03% 3.40%

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 1 162 16950 98.45 805 790 164.1
A 0 23 8998 50.01 805 790 164.1
A 15 69 7790 42.65 805 790 164.1
B 0 219 116940 766.84 795 777 151.5
B 0 182 66090 431.16 795 777 151.5
B 4 173 61688 402.1 795 777 151.5
C 3 233 119735 649.8 784 789 183.0
C 13 61 5641 26.51 784 789 183.0
C 14 220 4397 19.71 784 789 183.0
D 5 222 1104288 5660.4 772 757 195.0
D 10 157 329736 1687.45 772 757 195.0
D 1 52 305096 1561.06 772 757 195.0

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