ASTROSAT CZTI

Data Quality Report

Orbit 39693

Creation date: 2024-06-27T22:07:48.895207
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_051T01_9000005490_39693cztM0_level2.fits modeM0/AS1A12_051T01_9000005490_39693cztM0_level2_quad_clean.evt
Size (bytes)502,963,20092,836,800
Size479.7 MB 88.5 MB
Events in quadrant A7,683,453560,036
Events in quadrant B2,712,508687,227
Events in quadrant C5,024,914606,250
Events in quadrant D2,796,913595,687

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0264203
B0112672
C0185832
D0117502

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5162131425.455250%
B5162240.464936%
C51623817.380860%
D5162360.697404%

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 7254 5163 1235 1235 17.03% 23.92%
B 7254 5163 13 13 0.18% 0.25%
C 7254 5163 359 359 4.95% 6.95%
D 7254 5163 31 31 0.43% 0.60%

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 15 222 4861384 41062.77 584 575 118.4
A 10 83 453057 3822.44 584 575 118.4
A 15 174 72486 607.48 584 575 118.4
B 5 172 157526 1352.8 612 598 116.0
B 5 32 51552 439.25 612 598 116.0
B 10 246 21978 184.31 612 598 116.0
C 15 208 1531941 11562.29 573 579 132.4
C 9 187 949553 7165.07 573 579 132.4
C 15 214 210845 1587.58 573 579 132.4
D 12 227 150820 1048.87 587 570 143.2
D 13 249 83577 579.46 587 570 143.2
D 2 250 70467 487.94 587 570 143.2

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