ASTROSAT CZTI

Data Quality Report

Orbit 20940

Creation date: 2024-06-27T18:21:27.831252
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/AS1A05_088T05_9000003088_20940cztM0_level2.evt modeM0/AS1A05_088T05_9000003088_20940cztM0_level2_quad_clean.evt
Size (bytes)490,674,24081,282,240
Size467.9 MB 77.5 MB
Events in quadrant A3,057,741519,132
Events in quadrant B3,458,549524,682
Events in quadrant C3,186,777498,643
Events in quadrant D4,716,101465,811

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132803
B0144752
C0134592
D0185852

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6501240.369174%
B6501891.369020%
C6501470.722966%
D65013004.614675%

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 7562 6502 0 0 0.00% 0.00%
B 7562 6502 20 20 0.26% 0.31%
C 7562 6502 0 0 0.00% 0.00%
D 7562 6502 272 272 3.60% 4.18%

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 0 226 6967 38.53 795 777 160.7
A 3 137 6288 34.3 795 777 160.7
A 12 194 5783 31.16 795 777 160.7
B 7 220 206689 1333.49 797 775 154.4
B 3 64 65367 418.3 797 775 154.4
B 0 230 19494 121.22 797 775 154.4
C 14 238 118628 662.72 764 770 177.8
C 3 233 46817 258.92 764 770 177.8
C 9 54 25657 139.94 764 770 177.8
D 7 238 1038856 5648.59 752 730 183.8
D 1 52 400385 2174.58 752 730 183.8
D 5 222 195160 1057.92 752 730 183.8

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