ASTROSAT CZTI

Data Quality Report

Orbit 46578

Creation date: 2024-06-27T23:24:59.886721
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_001T10_9000006232_46578cztM0_level2.fits modeM0/AS1C07_001T10_9000006232_46578cztM0_level2_quad_clean.evt
Size (bytes)542,067,84087,085,440
Size517.0 MB 83.1 MB
Events in quadrant A5,269,383598,053
Events in quadrant B2,624,601631,073
Events in quadrant C2,519,169622,048
Events in quadrant D9,205,628383,008

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0101

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019445110
B01209085
C01198854
D031579235

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01182
B01180
C01191
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57602344.062500%
B57551372.380539%
C5764681.179736%
D5747204335.548982%

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 6679 5772 10 10 0.15% 0.17%
B 6681 5773 15 15 0.22% 0.26%
C 6684 5773 10 10 0.15% 0.17%
D 6676 5760 1878 1878 28.13% 32.60%

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 2750114 21544.43 622 608 127.6
A 13 248 69273 538.04 622 608 127.6
A 9 191 15729 118.48 622 608 127.6
B 15 201 47085 379.12 627 606 122.6
B 4 158 34785 278.79 627 606 122.6
B 3 112 32500 260.15 627 606 122.6
C 1 3 36914 252.11 619 621 144.0
C 14 254 31654 215.57 619 621 144.0
C 0 207 17346 116.18 619 621 144.0
D 13 138 4702472 34760.94 539 522 135.3
D 5 33 958160 7079.7 539 522 135.3
D 1 52 497033 3670.64 539 522 135.3

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