ASTROSAT CZTI

Data Quality Report

Orbit 47812

Creation date: 2024-07-31T18:34:41.385428
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/AS1A13_081T01_9000006354_47812cztM0_level2.fits modeM0/AS1A13_081T01_9000006354_47812cztM0_level2_quad_clean.evt
Size (bytes)538,937,280115,453,440
Size514.0 MB 110.1 MB
Events in quadrant A7,076,140763,883
Events in quadrant B3,826,488790,951
Events in quadrant C3,218,488756,108
Events in quadrant D5,255,929670,647

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0266192
B0162562
C0153672
D0208962

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73803544.796748%
B73802022.737127%
C73801411.910569%
D73805217.059621%

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 7520 7382 0 0 0.00% 0.00%
B 7520 7383 8 8 0.11% 0.11%
C 7520 7382 8 8 0.11% 0.11%
D 7520 7383 407 407 5.41% 5.51%

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 10 83 3938737 23354.13 806 789 168.6
A 13 248 15364 86.44 806 789 168.6
A 3 137 9393 51.03 806 789 168.6
B 10 7 340620 2141.79 805 777 158.7
B 0 155 85208 532.11 805 777 158.7
B 0 200 80459 502.18 805 777 158.7
C 14 254 97265 518.45 789 789 186.1
C 12 2 31091 162.84 789 789 186.1
C 1 3 5844 27.17 789 789 186.1
D 12 2 1450045 7495.51 778 751 193.4
D 2 37 324600 1674.89 778 751 193.4
D 12 233 133954 688.9 778 751 193.4

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