ASTROSAT CZTI

Data Quality Report

Orbit 38348

Creation date: 2024-06-27T21:51:33.074450
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/AS1A10_094T24_9000005374_38348cztM0_level2.fits modeM0/AS1A10_094T24_9000005374_38348cztM0_level2_quad_clean.evt
Size (bytes)412,056,00084,173,760
Size393.0 MB 80.3 MB
Events in quadrant A2,692,055597,020
Events in quadrant B2,523,233607,378
Events in quadrant C2,545,057571,639
Events in quadrant D7,107,774425,413

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110423
B0108282
C0107132
D0246762

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4950170.343434%
B4950390.787879%
C4950280.565657%
D4950116223.474747%

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 7013 4951 7 7 0.10% 0.14%
B 7013 4951 19 19 0.27% 0.38%
C 7013 4951 24 24 0.34% 0.48%
D 7013 4951 1250 1250 17.82% 25.25%

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 390628 3479.22 550 540 112.1
A 12 189 111187 986.87 550 540 112.1
A 9 143 29899 261.85 550 540 112.1
B 0 183 155495 1484.32 552 538 104.4
B 0 229 112335 1070.89 552 538 104.4
B 15 32 23123 216.34 552 538 104.4
C 15 214 212011 1708.47 536 539 123.8
C 2 16 86689 696.0 536 539 123.8
C 0 207 68479 548.88 536 539 123.8
D 12 235 2191904 18434.97 494 481 118.9
D 10 203 1144680 9625.38 494 481 118.9
D 12 227 863265 7258.02 494 481 118.9

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