ASTROSAT CZTI

Data Quality Report

Orbit 40769

Creation date: 2024-06-27T22:20:15.107746
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/AS1C07_001T10_9000005566_40769cztM0_level2.fits modeM0/AS1C07_001T10_9000005566_40769cztM0_level2_quad_clean.evt
Size (bytes)429,759,36087,736,320
Size409.9 MB 83.7 MB
Events in quadrant A2,971,165614,218
Events in quadrant B2,750,007636,246
Events in quadrant C5,400,174560,823
Events in quadrant D4,343,002446,465

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121633
B0121212
C0198612
D0168342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A569880.140400%
B5698410.719551%
C569860810.670411%
D5698131423.060723%

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 7101 5699 4 4 0.06% 0.07%
B 7101 5699 22 22 0.31% 0.39%
C 7101 5699 676 676 9.52% 11.86%
D 7101 5699 377 377 5.31% 6.62%

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 527146 4127.66 614 600 127.6
A 12 189 54154 419.82 614 600 127.6
A 13 248 8798 64.27 614 600 127.6
B 5 255 141447 1182.45 614 598 119.1
B 0 190 80876 673.94 614 598 119.1
B 15 85 33697 277.87 614 598 119.1
C 9 187 2677739 20112.49 576 578 133.1
C 15 214 235858 1767.57 576 578 133.1
C 14 254 194093 1453.8 576 578 133.1
D 12 227 1062921 8110.84 531 517 131.0
D 1 47 613461 4679.47 531 517 131.0
D 12 191 204679 1558.66 531 517 131.0

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