ASTROSAT CZTI

Data Quality Report

Orbit 34395

Creation date: 2022-02-07T02:46:32.384866
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/AS1A05_085T01_9000004910_34395cztM0_level2.evt modeM0/AS1A05_085T01_9000004910_34395cztM0_level2_quad_clean.evt
Size (bytes)522,550,08060,860,160
Size498.3 MB 58.0 MB
Events in quadrant A2,353,443411,628
Events in quadrant B2,637,445415,670
Events in quadrant C2,596,905401,973
Events in quadrant D7,900,356264,012

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102353
B0109382
C0106542
D0269732

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4971110.221283%
B4971400.804667%
C4971320.643734%
D4971178535.908268%

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 7064 4972 3 3 0.04% 0.06%
B 7064 4972 21 21 0.30% 0.42%
C 7064 4972 29 29 0.41% 0.58%
D 7064 4972 1658 1658 23.47% 33.35%

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 9 143 36904 309.69 587 576 117.3
A 10 83 34609 290.13 587 576 117.3
A 13 6 14111 115.38 587 576 117.3
B 5 172 156030 1392.08 588 576 111.7
B 5 200 51918 459.77 588 576 111.7
B 0 190 50694 448.8 588 576 111.7
C 15 214 209426 1591.22 569 572 131.3
C 0 10 113566 860.88 569 572 131.3
C 12 249 22273 165.34 569 572 131.3
D 7 223 4577068 40616.44 464 451 112.7
D 8 195 409742 3632.37 464 451 112.7
D 7 38 318485 2822.48 464 451 112.7

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