ASTROSAT CZTI

Data Quality Report

Orbit 51238

Creation date: 2025-03-19T14:34:41.059354
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_001T01_9000006454_51238cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51238cztM0_level2_quad_clean.evt
Size (bytes)757,995,84096,076,800
Size722.9 MB 91.6 MB
Events in quadrant A6,230,938610,287
Events in quadrant B5,484,889690,487
Events in quadrant C7,829,161588,728
Events in quadrant D7,946,884509,323

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236490
B0213880
C0283630
D0286681

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73296248.514122%
B73305006.821282%
C733092412.605730%
D7329135418.474553%

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 7329 7329 448 448 6.11% 6.11%
B 7330 7330 358 358 4.88% 4.88%
C 7330 7330 957 957 13.06% 13.06%
D 7329 7328 1357 1357 18.52% 18.52%

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 8 26 1287758 7341.53 699 681 175.3
A 12 3 988006 5631.74 699 681 175.3
A 9 160 385930 2197.47 699 681 175.3
B 5 185 895546 5697.63 727 700 157.1
B 5 172 770472 4901.26 727 700 157.1
B 7 252 193155 1225.39 727 700 157.1
C 4 12 4086199 21630.23 691 688 188.9
C 13 3 242139 1278.33 691 688 188.9
C 4 13 200177 1056.17 691 688 188.9
D 12 20 2825881 15215.63 658 636 185.7
D 2 62 940558 5062.04 658 636 185.7
D 3 12 353853 1902.28 658 636 185.7

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