ASTROSAT CZTI

Data Quality Report

Orbit 41382

Creation date: 2024-06-27T22:28:23.801565
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/AS1A12_035T01_9000005660_41382cztM0_level2.fits modeM0/AS1A12_035T01_9000005660_41382cztM0_level2_quad_clean.evt
Size (bytes)336,228,48090,552,960
Size320.7 MB 86.4 MB
Events in quadrant A3,014,611608,188
Events in quadrant B2,588,738620,607
Events in quadrant C3,070,479571,105
Events in quadrant D3,335,499549,760

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123723
B0116182
C0126842
D0137332

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5607280.499376%
B5607100.178348%
C56072083.709649%
D5607661.177100%

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 7160 5608 9 9 0.13% 0.16%
B 7160 5608 1 1 0.01% 0.02%
C 7160 5608 198 198 2.77% 3.53%
D 7160 5608 43 43 0.60% 0.77%

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 559556 4429.27 616 603 126.2
A 13 248 37247 290.38 616 603 126.2
A 12 189 19860 152.6 616 603 126.2
B 0 190 60603 501.73 612 593 119.6
B 0 229 41660 343.35 612 593 119.6
B 5 255 29321 240.19 612 593 119.6
C 0 10 541513 3939.89 585 587 137.3
C 15 214 232334 1687.95 585 587 137.3
C 2 16 12379 85.89 585 587 137.3
D 1 52 285599 1941.33 599 581 146.8
D 12 79 214549 1457.39 599 581 146.8
D 1 47 155837 1057.49 599 581 146.8

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