ASTROSAT CZTI

Data Quality Report

Orbit 39868

Creation date: 2024-06-27T22:09:39.315420
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_032T02_9000005500_39868cztM0_level2.fits modeM0/AS1A12_032T02_9000005500_39868cztM0_level2_quad_clean.evt
Size (bytes)475,565,76078,295,680
Size453.5 MB 74.7 MB
Events in quadrant A7,138,875418,518
Events in quadrant B3,683,277563,940
Events in quadrant C2,482,864565,377
Events in quadrant D3,928,600487,788

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0245023
B0141472
C099872
D0147972

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4769162434.053261%
B47692124.445376%
C4769110.230656%
D47693637.611659%

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 6922 4770 1316 1316 19.01% 27.59%
B 6922 4770 134 134 1.94% 2.81%
C 6922 4770 7 7 0.10% 0.15%
D 6922 4770 328 328 4.74% 6.88%

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 6 10 4306144 44620.4 473 465 96.5
A 10 83 435428 4507.59 473 465 96.5
A 13 248 382833 3962.54 473 465 96.5
B 4 170 374428 3678.9 536 522 101.6
B 5 172 364334 3579.59 536 522 101.6
B 0 229 196158 1924.89 536 522 101.6
C 15 214 209072 1673.56 537 542 124.6
C 1 16 75986 605.47 537 542 124.6
C 14 254 36867 291.52 537 542 124.6
D 12 227 1013395 7956.09 522 508 127.3
D 2 249 224061 1755.98 522 508 127.3
D 13 249 222286 1742.04 522 508 127.3

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