ASTROSAT CZTI

Data Quality Report

Orbit 15587

Creation date: 2024-06-27T17:10:46.318974
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_037T02_9000002310_15587cztM0_level2.evt modeM0/AS1A04_037T02_9000002310_15587cztM0_level2_quad_clean.evt
Size (bytes)503,665,92095,434,560
Size480.3 MB 91.0 MB
Events in quadrant A4,656,185601,924
Events in quadrant B3,355,893637,641
Events in quadrant C3,332,627614,734
Events in quadrant D3,483,411598,041

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176783
B0137982
C0136912
D0142262

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62683475.536056%
B6268661.052967%
C6268600.957243%
D6269991.579199%

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 7529 6270 281 281 3.73% 4.48%
B 7529 6269 11 11 0.15% 0.18%
C 7529 6270 0 0 0.00% 0.00%
D 7530 6271 55 55 0.73% 0.88%

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 15 69 832481 5168.18 809 794 160.9
A 0 253 709508 4404.01 809 794 160.9
A 0 226 7131 39.38 809 794 160.9
B 4 48 58862 376.17 817 797 154.4
B 4 173 37210 235.9 817 797 154.4
B 0 189 31506 198.95 817 797 154.4
C 14 238 123196 659.33 800 806 185.6
C 3 233 87571 467.41 800 806 185.6
C 13 61 5674 26.22 800 806 185.6
D 1 52 217885 1105.89 808 786 196.3
D 7 223 64275 323.41 808 786 196.3
D 12 110 43841 219.32 808 786 196.3

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