ASTROSAT CZTI

Data Quality Report

Orbit 30843

Creation date: 2024-06-27T20:20:14.363260
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/AS1A10_071T40_9000004458_30843cztM0_level2.evt modeM0/AS1A10_071T40_9000004458_30843cztM0_level2_quad_clean.evt
Size (bytes)625,858,56090,843,840
Size596.9 MB 86.6 MB
Events in quadrant A3,113,663598,840
Events in quadrant B8,157,696578,783
Events in quadrant C3,391,180565,242
Events in quadrant D3,855,002558,184

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133082
B0287802
C0140242
D0156952

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6447270.418799%
B6447146622.739259%
C64461482.295998%
D6446370.573999%

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 7542 6447 0 0 0.00% 0.00%
B 7542 6447 849 849 11.26% 13.17%
C 7541 6446 10 10 0.13% 0.16%
D 7541 6447 14 14 0.19% 0.22%

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 13 254 12120 70.42 806 790 160.9
A 3 137 8094 45.4 806 790 160.9
A 0 226 6654 36.45 806 790 160.9
B 6 36 3157291 21407.16 770 752 147.5
B 6 159 1795810 12173.81 770 752 147.5
B 5 172 77912 523.29 770 752 147.5
C 14 238 145117 802.26 765 770 179.9
C 3 233 107875 595.28 765 770 179.9
C 0 10 56127 307.67 765 770 179.9
D 8 195 667381 3656.75 769 751 182.3
D 1 52 112351 612.17 769 751 182.3
D 2 250 60150 325.83 769 751 182.3

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