ASTROSAT CZTI

Data Quality Report

Orbit 11983

Creation date: 2024-06-27T16:20:53.315205
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/AS1A04_082T01_9000001772_11983cztM0_level2.evt modeM0/AS1A04_082T01_9000001772_11983cztM0_level2_quad_clean.evt
Size (bytes)459,956,160110,554,560
Size438.6 MB 105.4 MB
Events in quadrant A3,389,214740,592
Events in quadrant B3,857,799746,574
Events in quadrant C2,977,568718,459
Events in quadrant D3,264,184689,917

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143912
B0157271
C0133191
D0140431

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6499861.323281%
B64991742.677335%
C6499310.476996%
D6499440.677027%

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 7740 6500 5 5 0.06% 0.08%
B 7740 6500 84 84 1.09% 1.29%
C 7740 6500 0 0 0.00% 0.00%
D 7740 6500 12 12 0.16% 0.18%

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 117616 727.05 799 784 160.7
A 1 178 58291 357.87 799 784 160.7
A 1 161 51738 317.09 799 784 160.7
B 4 239 415027 2739.63 801 783 151.2
B 15 204 139293 916.05 801 783 151.2
B 3 64 100826 661.64 801 783 151.2
C 13 61 5757 28.33 762 766 176.2
C 8 208 3879 17.67 762 766 176.2
C 14 234 2834 11.74 762 766 176.2
D 8 195 112631 626.2 753 730 178.7
D 2 136 52413 289.22 753 730 178.7
D 7 80 47616 262.37 753 730 178.7

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