ASTROSAT CZTI

Data Quality Report

Orbit 34871

Creation date: 2022-03-11T06:22:23.047483
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/AS1C07_005T01_9000004992_34871cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34871cztM0_level2_quad_clean.evt
Size (bytes)505,831,68072,063,360
Size482.4 MB 68.7 MB
Events in quadrant A4,467,593462,960
Events in quadrant B3,485,755476,191
Events in quadrant C2,798,204468,702
Events in quadrant D4,231,854426,004

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0390

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165453
B0134592
C0109282
D0159142

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49592745.525308%
B49592314.658197%
C4959551.109095%
D49593406.856221%

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 7081 4960 213 213 3.01% 4.29%
B 7081 4960 171 171 2.41% 3.45%
C 7081 4960 46 46 0.65% 0.93%
D 7081 4960 327 327 4.62% 6.59%

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 15 169 2032827 16793.79 611 602 121.0
A 10 83 51545 420.98 611 602 121.0
A 13 6 15530 123.36 611 602 121.0
B 5 172 631606 5624.77 612 599 112.2
B 0 190 195683 1738.97 612 599 112.2
B 5 31 74286 656.84 612 599 112.2
C 15 214 210108 1530.33 604 609 136.9
C 0 10 178454 1299.1 604 609 136.9
C 0 207 25763 183.74 604 609 136.9
D 8 195 981536 6677.9 590 577 146.9
D 12 227 324598 2205.78 590 577 146.9
D 1 52 214301 1454.93 590 577 146.9

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