ASTROSAT CZTI

Data Quality Report

Orbit 15207

Creation date: 2024-06-27T17:05:17.373931
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_070T01_9000002244_15207cztM0_level2.evt modeM0/AS1T02_070T01_9000002244_15207cztM0_level2_quad_clean.evt
Size (bytes)487,915,20065,525,760
Size465.3 MB 62.5 MB
Events in quadrant A3,305,686383,628
Events in quadrant B3,799,821385,434
Events in quadrant C3,991,240376,275
Events in quadrant D3,221,690368,209

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140123
B0154802
C0161402
D0140412

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6743560.830491%
B67432463.648228%
C6743530.786000%
D6743510.756340%

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 7684 6744 0 0 0.00% 0.00%
B 7684 6744 135 135 1.76% 2.00%
C 7684 6744 0 0 0.00% 0.00%
D 7684 6744 9 9 0.12% 0.13%

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 12 189 85523 503.2 833 816 168.3
A 0 226 7452 39.42 833 816 168.3
A 12 194 6181 31.87 833 816 168.3
B 3 64 445316 2789.97 817 795 159.3
B 10 245 56562 350.01 817 795 159.3
B 0 189 47275 291.72 817 795 159.3
C 3 233 767705 4116.76 800 804 186.3
C 7 247 101002 537.87 800 804 186.3
C 13 61 5795 26.79 800 804 186.3
D 7 38 38608 189.46 808 782 199.7
D 12 110 27829 135.47 808 782 199.7
D 2 234 25504 123.83 808 782 199.7

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