ASTROSAT CZTI

Data Quality Report

Orbit 00945

Creation date: 2024-06-27T14:05:07.532298
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_998T01_9000000188_00945cztM0_level2.evt modeM0/AS1P01_998T01_9000000188_00945cztM0_level2_quad_clean.evt
Size (bytes)1,303,836,480115,459,200
Size1.2 GB 110.1 MB
Events in quadrant A9,399,977755,077
Events in quadrant B9,875,784749,993
Events in quadrant C9,815,254738,425
Events in quadrant D9,888,770719,582

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0333960
B0347950
C0345570
D0348260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A767230.039103%
B7672610.795099%
C7673140.182458%
D76731001.303271%

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 7672 7672 282 282 3.68% 3.68%
B 7672 7672 458 458 5.97% 5.97%
C 7673 7673 508 508 6.62% 6.62%
D 7673 7673 718 718 9.36% 9.36%

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 14 170 370391 648.9 2351 2370 567.1
A 12 189 12196 17.33 2351 2370 567.1
A 11 79 8378 10.59 2351 2370 567.1
B 5 249 285122 487.76 2463 2462 579.5
B 4 232 59654 98.69 2463 2462 579.5
B 15 22 56141 92.63 2463 2462 579.5
C 10 34 458671 719.99 2274 2352 633.8
C 15 241 403498 632.93 2274 2352 633.8
C 3 111 36858 54.44 2274 2352 633.8
D 12 188 779291 1156.75 2166 2242 671.8
D 1 4 759890 1127.86 2166 2242 671.8
D 12 22 141843 207.82 2166 2242 671.8

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