ASTROSAT CZTI

Data Quality Report

Orbit 40069

Creation date: 2024-06-27T22:11:57.035342
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/AS1A12_054T03_9000005516_40069cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_40069cztM0_level2_quad_clean.evt
Size (bytes)302,843,52090,636,480
Size288.8 MB 86.4 MB
Events in quadrant A2,706,970607,617
Events in quadrant B2,342,421643,310
Events in quadrant C3,069,250598,583
Events in quadrant D2,705,043547,219

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111273
B0102012
C0122732
D0114812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4959230.463803%
B4959200.403307%
C49591032.077032%
D4959611.230087%

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 7021 4960 17 17 0.24% 0.34%
B 7021 4960 4 4 0.06% 0.08%
C 7021 4960 92 92 1.31% 1.85%
D 7021 4960 52 52 0.74% 1.05%

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 421587 3671.25 564 554 114.7
A 13 248 51600 445.1 564 554 114.7
A 9 143 35523 304.92 564 554 114.7
B 4 171 67197 616.09 570 557 108.2
B 0 230 20799 187.14 570 557 108.2
B 0 190 13490 119.57 570 557 108.2
C 9 187 458552 3551.16 553 558 129.0
C 15 214 205560 1589.53 553 558 129.0
C 9 54 81566 628.11 553 558 129.0
D 12 227 209576 1548.64 546 532 135.0
D 2 249 207909 1536.29 546 532 135.0
D 13 249 91629 674.87 546 532 135.0

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