ASTROSAT CZTI

Data Quality Report

Orbit 34478

Creation date: 2022-02-12T16:49:33.451416
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_071T13_9000004922_34478cztM0_level2.evt modeM0/AS1A10_071T13_9000004922_34478cztM0_level2_quad_clean.evt
Size (bytes)527,212,80050,221,440
Size502.8 MB 47.9 MB
Events in quadrant A2,854,760293,313
Events in quadrant B4,080,504293,997
Events in quadrant C3,546,102285,650
Events in quadrant D5,115,277264,745

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117343
B0155352
C0137742
D0190862

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5468140.256035%
B54684678.540600%
C54681582.889539%
D54683095.651061%

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 7381 5469 4 4 0.05% 0.07%
B 7381 5469 350 350 4.74% 6.40%
C 7381 5469 122 122 1.65% 2.23%
D 7381 5469 283 283 3.83% 5.17%

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 38849 268.07 713 700 142.3
A 9 143 29846 204.8 713 700 142.3
A 10 255 12524 83.09 713 700 142.3
B 5 172 1068060 8271.58 674 659 129.0
B 0 189 127609 983.77 674 659 129.0
B 4 232 85351 656.3 674 659 129.0
C 15 208 360431 2298.82 681 686 156.5
C 15 214 232320 1480.17 681 686 156.5
C 4 254 171415 1090.98 681 686 156.5
D 12 79 943795 5608.09 682 665 168.2
D 8 195 673794 4002.6 682 665 168.2
D 14 52 222611 1319.75 682 665 168.2

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