ASTROSAT CZTI

Data Quality Report

Orbit 15645

Creation date: 2024-06-27T17:11:33.455132
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_086T01_9000002316_15645cztM0_level2.evt modeM0/AS1T02_086T01_9000002316_15645cztM0_level2_quad_clean.evt
Size (bytes)448,966,08074,502,720
Size428.2 MB 71.1 MB
Events in quadrant A3,285,634453,545
Events in quadrant B3,184,005465,275
Events in quadrant C3,222,477454,387
Events in quadrant D3,479,938446,212

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137152
B0131581
C0132341
D0143361

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6259490.782873%
B6259560.894712%
C62591161.853331%
D62591021.629653%

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 7510 6260 3 3 0.04% 0.05%
B 7510 6260 0 0 0.00% 0.00%
C 7510 6260 2 2 0.03% 0.03%
D 7510 6260 63 63 0.84% 1.01%

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 15 249 191284 1192.29 799 783 159.8
A 15 157 8299 47.04 799 783 159.8
A 15 69 7607 42.71 799 783 159.8
B 0 214 21147 134.73 806 785 151.1
B 12 111 16879 106.49 806 785 151.1
B 11 111 14397 90.07 806 785 151.1
C 14 238 134833 751.19 781 789 178.4
C 3 233 14871 78.92 781 789 178.4
C 14 225 11648 60.85 781 789 178.4
D 1 52 501841 2669.46 784 760 187.7
D 2 234 23561 121.47 784 760 187.7
D 10 40 9851 48.43 784 760 187.7

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