ASTROSAT CZTI

Data Quality Report

Orbit 38805

Creation date: 2024-06-27T21:56:40.659775
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_025T17_9000005400_38805cztM0_level2.fits modeM0/AS1A12_025T17_9000005400_38805cztM0_level2_quad_clean.evt
Size (bytes)451,264,32090,717,120
Size430.4 MB 86.5 MB
Events in quadrant A3,475,167624,960
Events in quadrant B3,733,735604,610
Events in quadrant C2,743,486611,190
Events in quadrant D6,323,407519,344

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138963
B0147442
C0115692
D0227032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5522360.651938%
B55224067.352409%
C5522180.325969%
D552259210.720753%

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 7255 5523 30 30 0.41% 0.54%
B 7255 5523 123 123 1.70% 2.23%
C 7255 5523 10 10 0.14% 0.18%
D 7255 5523 620 620 8.55% 11.23%

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 434321 3495.2 612 600 124.1
A 12 16 387794 3120.26 612 600 124.1
A 13 248 197487 1586.64 612 600 124.1
B 5 184 1224621 10506.26 601 586 116.5
B 0 230 56902 483.38 601 586 116.5
B 15 85 19344 161.01 601 586 116.5
C 15 214 243936 1741.49 601 606 139.7
C 1 23 81607 579.72 601 606 139.7
C 0 10 32995 231.8 601 606 139.7
D 12 235 2607323 18295.07 581 564 142.5
D 2 16 684841 4802.48 581 564 142.5
D 13 249 264542 1852.68 581 564 142.5

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