ASTROSAT CZTI

Data Quality Report

Orbit 36046

Creation date: 2022-08-10T00:47:25.594409
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/AS1T04_069T01_9000005158_36046cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36046cztM0_level2_quad_clean.evt
Size (bytes)487,048,32058,582,080
Size464.5 MB 55.9 MB
Events in quadrant A2,500,711375,111
Events in quadrant B2,666,856376,338
Events in quadrant C3,492,474355,960
Events in quadrant D5,747,946311,744

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104163
B0110072
C0133382
D0205282

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A504580.158573%
B5045420.832507%
C50453627.175421%
D504581216.095144%

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 7078 5046 0 0 0.00% 0.00%
B 7078 5046 27 27 0.38% 0.54%
C 7077 5045 322 322 4.55% 6.38%
D 7078 5046 795 795 11.23% 15.76%

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 164448 1334.92 600 588 122.7
A 13 6 14411 112.61 600 588 122.7
A 13 254 8097 61.17 600 588 122.7
B 5 236 175181 1545.23 591 577 113.0
B 0 190 69040 605.89 591 577 113.0
B 5 255 36277 315.94 591 577 113.0
C 9 187 842518 6408.63 565 570 131.4
C 15 214 206790 1569.68 565 570 131.4
C 0 10 174379 1322.98 565 570 131.4
D 12 235 3012286 22334.66 549 535 134.8
D 12 17 128932 952.17 549 535 134.8
D 12 6 118627 875.75 549 535 134.8

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