ASTROSAT CZTI

Data Quality Report

Orbit 46410

Creation date: 2024-06-27T23:22:51.799998
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/AS1A13_070T04_9000006204_46410cztM0_level2.fits modeM0/AS1A13_070T04_9000006204_46410cztM0_level2_quad_clean.evt
Size (bytes)929,963,520211,150,080
Size886.9 MB 201.4 MB
Events in quadrant A12,748,9391,372,845
Events in quadrant B6,836,4891,438,099
Events in quadrant C6,599,9181,387,125
Events in quadrant D7,200,6451,268,026

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02700
B02700
C02700
D02700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0471185
B0298692
C0294232
D0311862

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A134175333.972572%
B134182601.937696%
C134181791.334029%
D134182111.572515%

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 14358 13420 255 255 1.78% 1.90%
B 14358 13420 136 136 0.95% 1.01%
C 14358 13420 101 101 0.70% 0.75%
D 14358 13420 144 144 1.00% 1.07%

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 6310808 20863.45 1460 1425 302.4
A 0 247 497500 1640.39 1460 1425 302.4
A 13 248 133812 437.77 1460 1425 302.4
B 15 201 327396 1126.45 1472 1426 289.4
B 5 172 264708 909.82 1472 1426 289.4
B 0 155 81465 276.59 1472 1426 289.4
C 14 254 488210 1416.81 1456 1464 343.6
C 15 208 137717 396.6 1456 1464 343.6
C 12 249 96396 276.33 1456 1464 343.6
D 5 235 388100 1068.44 1449 1404 361.9
D 2 37 328812 904.63 1449 1404 361.9
D 11 224 213140 585.03 1449 1404 361.9

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