ASTROSAT CZTI

Data Quality Report

Orbit 28646

Creation date: 2024-06-27T19:54:24.189821
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_045T07_9000004110_28646cztM0_level2.evt modeM0/AS1A10_045T07_9000004110_28646cztM0_level2_quad_clean.evt
Size (bytes)447,298,56063,696,960
Size426.6 MB 60.7 MB
Events in quadrant A2,776,012407,719
Events in quadrant B2,730,290413,520
Events in quadrant C2,759,089399,803
Events in quadrant D4,933,069348,039

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01062
C01040
D01051

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A081
B081
C092
D081

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01104864
B01092379
C01099565
D01833886

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5132601.169135%
B5126581.131487%
C5130791.539961%
D512958611.425229%

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 6793 5136 0 0 0.00% 0.00%
B 6793 5131 0 0 0.00% 0.00%
C 6793 5135 0 0 0.00% 0.00%
D 6792 5131 537 537 7.91% 10.47%

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 15 174 51488 360.42 704 691 140.9
A 13 254 9121 59.81 704 691 140.9
A 3 137 6343 40.1 704 691 140.9
B 12 111 15369 113.62 689 675 129.3
B 11 111 13891 102.19 689 675 129.3
B 14 111 12662 92.69 689 675 129.3
C 14 238 111512 703.23 677 684 157.6
C 7 247 5453 30.26 677 684 157.6
C 13 61 4632 25.05 677 684 157.6
D 1 52 1983661 12689.48 653 636 156.3
D 8 195 345673 2207.91 653 636 156.3
D 13 104 72648 460.81 653 636 156.3

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