ASTROSAT CZTI

Data Quality Report

Orbit 00801

Creation date: 2024-06-27T14:03:07.480753
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/AS1P01_010T01_9000000112_00801cztM0_level2.evt modeM0/AS1P01_010T01_9000000112_00801cztM0_level2_quad_clean.evt
Size (bytes)1,149,376,320104,080,320
Size1.1 GB 99.3 MB
Events in quadrant A8,726,574670,741
Events in quadrant B9,028,598680,069
Events in quadrant C8,507,560663,214
Events in quadrant D8,078,100645,774

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0309490
B0318170
C0302870
D0290110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7066570.806680%
B7067570.806566%
C7067370.523560%
D7067841.188623%

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 7066 7066 434 434 6.14% 6.14%
B 7067 7067 440 440 6.23% 6.23%
C 7067 7067 404 404 5.72% 5.72%
D 7067 7067 390 390 5.52% 5.52%

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 14 79 119640 215.83 2226 2239 543.9
A 15 233 35975 62.02 2226 2239 543.9
A 15 171 27503 46.45 2226 2239 543.9
B 15 22 65666 114.72 2332 2337 552.0
B 5 191 39975 68.18 2332 2337 552.0
B 15 85 22044 35.7 2332 2337 552.0
C 15 241 53947 86.17 2135 2216 600.3
C 3 111 37811 59.29 2135 2216 600.3
C 3 79 33754 52.53 2135 2216 600.3
D 13 25 200538 309.73 2057 2131 640.6
D 1 4 69910 105.81 2057 2131 640.6
D 13 170 67718 102.39 2057 2131 640.6

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