ASTROSAT CZTI

Data Quality Report

Orbit 26040

Creation date: 2024-06-27T19:24:08.907501
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/AS1A09_033T02_9000003762_26040cztM0_level2.evt modeM0/AS1A09_033T02_9000003762_26040cztM0_level2_quad_clean.evt
Size (bytes)499,210,56076,377,600
Size476.1 MB 72.8 MB
Events in quadrant A2,992,617497,425
Events in quadrant B3,095,243501,100
Events in quadrant C2,969,990468,756
Events in quadrant D5,688,448461,186

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119470
B0122570
C0118550
D0203090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5497571.036929%
B5497941.710024%
C5497881.600873%
D549771613.025287%

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 6862 5497 0 0 0.00% 0.00%
B 6862 5497 25 25 0.36% 0.45%
C 6862 5498 0 0 0.00% 0.00%
D 6862 5497 744 744 10.84% 13.53%

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 13 254 7289 42.42 776 763 153.8
A 0 226 6673 38.42 776 763 153.8
A 3 137 6597 37.92 776 763 153.8
B 10 245 72439 504.82 754 736 142.0
B 0 229 40608 280.72 754 736 142.0
B 0 230 35638 245.72 754 736 142.0
C 14 238 120265 721.48 721 726 165.7
C 3 233 36950 218.63 721 726 165.7
C 13 61 4871 25.02 721 726 165.7
D 1 52 2890245 16650.63 724 708 173.5
D 7 223 36892 208.51 724 708 173.5
D 2 234 18907 104.87 724 708 173.5

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