ASTROSAT CZTI

Data Quality Report

Orbit 39918

Creation date: 2024-06-27T22:10:16.637425
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_068T03_9000005508_39918cztM0_level2.fits modeM0/AS1A12_068T03_9000005508_39918cztM0_level2_quad_clean.evt
Size (bytes)261,118,08075,072,960
Size249.0 MB 71.6 MB
Events in quadrant A2,279,792499,996
Events in quadrant B2,154,105509,099
Events in quadrant C2,309,339492,760
Events in quadrant D2,563,237448,104

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A097072
B095701
C096081
D0109901

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A459990.195695%
B459950.108719%
C4599110.239182%
D45991342.913677%

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 5911 4599 3 3 0.05% 0.07%
B 5911 4598 5 5 0.08% 0.11%
C 5912 4599 4 4 0.07% 0.09%
D 5911 4598 120 120 2.03% 2.61%

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 333887 3210.45 499 489 103.8
A 13 254 7185 64.48 499 489 103.8
A 3 137 5568 48.91 499 489 103.8
B 4 171 81486 828.06 496 482 97.8
B 0 230 78446 796.99 496 482 97.8
B 15 54 14716 145.51 496 482 97.8
C 9 54 192369 1645.02 490 493 116.6
C 15 214 188312 1610.23 490 493 116.6
C 0 10 9497 77.19 490 493 116.6
D 13 249 244966 2035.86 484 471 120.1
D 12 227 223961 1860.96 484 471 120.1
D 2 249 114729 951.4 484 471 120.1

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