ASTROSAT CZTI

Data Quality Report

Orbit 06640

Creation date: 2024-06-27T15:09:43.336616
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/AS1A02_111T01_9000000900_06640cztM0_level2.evt modeM0/AS1A02_111T01_9000000900_06640cztM0_level2_quad_clean.evt
Size (bytes)1,661,060,160283,622,400
Size1.5 GB 270.5 MB
Events in quadrant A9,380,3471,862,935
Events in quadrant B10,431,6521,869,776
Events in quadrant C8,635,1071,855,668
Events in quadrant D20,534,7871,649,133

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0417525
B0442934
C0399804
D0749394

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03960
B03960
C03960
D03960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A196483491.776262%
B196484912.498982%
C196481971.002647%
D19648207810.576140%

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 22873 19651 45 45 0.20% 0.23%
B 22873 19652 123 123 0.54% 0.63%
C 22873 19652 0 0 0.00% 0.00%
D 22873 19652 1526 1526 6.67% 7.77%

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 15 239 412949 900.02 2257 2203 456.4
A 13 248 198620 430.39 2257 2203 456.4
A 8 15 48988 102.51 2257 2203 456.4
B 0 219 473278 1101.87 2274 2220 427.5
B 4 48 355297 825.9 2274 2220 427.5
B 0 228 317018 736.36 2274 2220 427.5
C 8 128 18922 32.95 2204 2213 507.1
C 13 61 17579 30.3 2204 2213 507.1
C 8 112 10439 16.22 2204 2213 507.1
D 8 195 6866486 13387.92 2108 2041 512.7
D 2 33 3992656 7783.01 2108 2041 512.7
D 2 63 336992 653.26 2108 2041 512.7

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