ASTROSAT CZTI

Data Quality Report

Orbit 36186

Creation date: 2022-06-08T06:16:34.325500
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_071T50_9000005166_36186cztM0_level2.evt modeM0/AS1A10_071T50_9000005166_36186cztM0_level2_quad_clean.evt
Size (bytes)379,287,36049,256,640
Size361.7 MB 47.0 MB
Events in quadrant A2,263,243301,567
Events in quadrant B2,804,480295,150
Events in quadrant C2,554,795298,857
Events in quadrant D3,554,550275,502

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A096322
B0112422
C0103752
D0135682

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4547140.307895%
B45471793.936662%
C4547380.835716%
D45474018.819002%

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 6400 4548 4 4 0.06% 0.09%
B 6400 4548 124 124 1.94% 2.73%
C 6400 4548 25 25 0.39% 0.55%
D 6400 4548 363 363 5.67% 7.98%

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 10 83 152914 1414.26 530 521 107.8
A 8 144 33522 306.26 530 521 107.8
A 9 143 14368 128.51 530 521 107.8
B 5 236 514175 5058.62 521 507 101.5
B 5 172 196639 1931.52 521 507 101.5
B 5 200 13536 128.31 521 507 101.5
C 15 214 204018 1681.18 517 521 121.0
C 0 10 167356 1378.3 517 521 121.0
C 1 23 48847 399.24 517 521 121.0
D 13 249 625400 5124.91 495 483 121.9
D 12 6 591940 4850.51 495 483 121.9
D 2 250 114360 933.9 495 483 121.9

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