ASTROSAT CZTI

Data Quality Report

Orbit 48233

Creation date: 2024-08-29T04:05:00.073065
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_029T01_9000006422_48233cztM0_level2.fits modeM0/AS1A13_029T01_9000006422_48233cztM0_level2_quad_clean.evt
Size (bytes)264,559,68057,908,160
Size252.3 MB 55.2 MB
Events in quadrant A3,818,320383,172
Events in quadrant B2,144,702395,102
Events in quadrant C1,890,487370,672
Events in quadrant D1,654,562346,087

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135861
B089351
C084531
D077741

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A36522115.777656%
B36531113.038598%
C36531173.202847%
D3653371.012866%

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 4252 3652 4 4 0.09% 0.11%
B 4253 3653 28 28 0.66% 0.77%
C 4253 3654 75 75 1.76% 2.05%
D 4253 3654 10 10 0.24% 0.27%

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 2268581 27048.01 390 382 83.9
A 13 248 22154 259.63 390 382 83.9
A 10 255 10484 120.47 390 382 83.9
B 0 200 282265 3506.21 398 386 80.4
B 5 255 128478 1593.3 398 386 80.4
B 4 21 119683 1483.9 398 386 80.4
C 12 2 372767 4018.94 387 390 92.7
C 14 254 3579 34.42 387 390 92.7
C 12 250 3009 28.27 387 390 92.7
D 2 249 38593 379.31 391 378 100.7
D 13 171 32870 322.5 391 378 100.7
D 12 233 24288 237.32 391 378 100.7

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