ASTROSAT CZTI

Data Quality Report

Orbit 46227

Creation date: 2024-06-27T23:20:32.223522
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_065T03_9000006186_46227cztM0_level2.fits modeM0/AS1A13_065T03_9000006186_46227cztM0_level2_quad_clean.evt
Size (bytes)527,293,440117,354,240
Size502.9 MB 111.9 MB
Events in quadrant A6,902,307787,812
Events in quadrant B4,490,463823,506
Events in quadrant C3,481,770779,177
Events in quadrant D4,125,525696,293

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0253304
B0176842
C0147042
D0165712

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66932914.347826%
B66932103.137606%
C66941041.553630%
D66943014.496564%

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 7863 6693 25 25 0.32% 0.37%
B 7863 6693 83 83 1.06% 1.24%
C 7864 6694 49 49 0.62% 0.73%
D 7864 6694 207 207 2.63% 3.09%

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 3329909 19548.98 822 806 170.3
A 0 247 265594 1554.87 822 806 170.3
A 9 191 40978 235.9 822 806 170.3
B 3 112 644358 4006.85 820 798 160.6
B 10 246 320393 1989.82 820 798 160.6
B 5 172 94018 580.39 820 798 160.6
C 12 2 266631 1415.83 802 807 187.8
C 1 3 59136 310.67 802 807 187.8
C 14 254 24079 123.95 802 807 187.8
D 5 235 602426 2963.33 804 781 203.0
D 2 249 95291 465.5 804 781 203.0
D 13 249 89253 435.76 804 781 203.0

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