ASTROSAT CZTI

Data Quality Report

Orbit 22507

Creation date: 2024-06-27T18:42:04.331360
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/AS1A07_144T02_9000003340_22507cztM0_level2.evt modeM0/AS1A07_144T02_9000003340_22507cztM0_level2_quad_clean.evt
Size (bytes)510,393,60065,416,320
Size486.7 MB 62.4 MB
Events in quadrant A3,659,994384,129
Events in quadrant B3,950,916392,987
Events in quadrant C3,637,876381,396
Events in quadrant D3,773,003373,939

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151232
B0160242
C0150142
D0154502

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6425651.011673%
B64241271.976961%
C64241412.194894%
D6424731.136364%

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 7715 6425 3 3 0.04% 0.05%
B 7714 6424 13 13 0.17% 0.20%
C 7714 6424 1 1 0.01% 0.02%
D 7714 6424 16 16 0.21% 0.25%

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 34 84571 465.97 906 892 179.6
A 6 240 52262 286.06 906 892 179.6
A 3 1 33878 183.68 906 892 179.6
B 15 33 360454 2172.68 900 881 165.5
B 15 35 23194 134.82 900 881 165.5
B 12 111 18866 108.67 900 881 165.5
C 14 238 141194 691.4 885 895 202.9
C 0 10 36752 176.71 885 895 202.9
C 10 22 11202 50.79 885 895 202.9
D 1 52 251749 1161.92 896 872 215.9
D 7 223 26636 119.32 896 872 215.9
D 2 234 26171 117.17 896 872 215.9

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