ASTROSAT CZTI

Data Quality Report

Orbit 39432

Creation date: 2024-06-27T22:04:29.209878
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_077T06_9000005474_39432cztM0_level2.fits modeM0/AS1A12_077T06_9000005474_39432cztM0_level2_quad_clean.evt
Size (bytes)424,681,92096,024,960
Size405.0 MB 91.6 MB
Events in quadrant A5,230,197623,142
Events in quadrant B3,003,936686,817
Events in quadrant C4,170,534628,460
Events in quadrant D2,895,632590,755

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192563
B0125302
C0158422
D0124162

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54074378.082116%
B5407881.627520%
C54073065.659330%
D5407581.072684%

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 7468 5408 434 434 5.81% 8.03%
B 7468 5408 62 62 0.83% 1.15%
C 7468 5408 280 280 3.75% 5.18%
D 7468 5408 40 40 0.54% 0.74%

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 15 222 2456641 20231.87 596 585 121.4
A 10 83 425837 3503.03 596 585 121.4
A 15 174 16608 131.99 596 585 121.4
B 8 3 360542 3068.96 616 600 117.3
B 5 172 200397 1703.52 616 600 117.3
B 5 255 17421 143.42 616 600 117.3
C 15 208 1544652 11316.14 588 592 136.4
C 15 214 224544 1641.3 588 592 136.4
C 14 254 63934 464.22 588 592 136.4
D 12 227 215413 1498.58 589 574 143.4
D 2 249 144913 1006.82 589 574 143.4
D 2 250 100010 693.6 589 574 143.4

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