ASTROSAT CZTI

Data Quality Report

Orbit 12955

Creation date: 2024-06-27T16:34:22.535021
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/AS1G08_043T01_9000001902_12955cztM0_level2.evt modeM0/AS1G08_043T01_9000001902_12955cztM0_level2_quad_clean.evt
Size (bytes)501,094,08086,659,200
Size477.9 MB 82.6 MB
Events in quadrant A3,146,780589,435
Events in quadrant B5,440,873475,186
Events in quadrant C2,954,107588,044
Events in quadrant D3,233,130558,914

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128042
B0197871
C0123011
D0132421

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5900911.542373%
B5900121820.644068%
C5900671.135593%
D5900941.593220%

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 7182 5904 0 0 0.00% 0.00%
B 7182 5902 787 787 10.96% 13.33%
C 7182 5904 0 0 0.00% 0.00%
D 7182 5904 25 25 0.35% 0.42%

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 75841 493.07 764 748 152.3
A 12 189 50690 327.92 764 748 152.3
A 1 178 31245 200.25 764 748 152.3
B 4 239 2507080 20836.26 649 635 120.3
B 3 64 316949 2629.54 649 635 120.3
B 0 219 26134 211.98 649 635 120.3
C 3 248 36363 207.68 748 753 171.5
C 13 61 5379 26.98 748 753 171.5
C 3 202 1876 6.55 748 753 171.5
D 1 52 204522 1136.19 748 728 179.4
D 8 195 132515 734.74 748 728 179.4
D 10 253 29521 160.53 748 728 179.4

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