ASTROSAT CZTI

Data Quality Report

Orbit 37653

Creation date: 2024-06-27T21:42:41.121721
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/AS1A11_075T01_9000005342_37653cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37653cztM0_level2_quad_clean.evt
Size (bytes)381,827,52081,152,640
Size364.1 MB 77.4 MB
Events in quadrant A2,721,799522,566
Events in quadrant B2,567,932541,358
Events in quadrant C2,702,787546,946
Events in quadrant D3,230,241495,344

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112923
B0108502
C0109662
D0131762

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5009270.539030%
B5009470.938311%
C5009531.058095%
D50092865.709722%

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 9194 5011 20 20 0.22% 0.40%
B 9194 5009 22 22 0.24% 0.44%
C 9194 5009 36 36 0.39% 0.72%
D 9194 5009 282 282 3.07% 5.63%

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 293926 2565.25 570 560 114.4
A 9 143 134520 1171.37 570 560 114.4
A 15 222 57545 498.29 570 560 114.4
B 5 172 96380 873.88 575 560 109.6
B 5 200 58643 529.72 575 560 109.6
B 0 230 35588 319.45 575 560 109.6
C 15 214 226713 1716.8 572 576 131.7
C 0 10 139553 1055.1 572 576 131.7
C 15 159 81184 611.97 572 576 131.7
D 12 227 489376 3678.19 547 532 132.9
D 2 249 345286 2594.02 547 532 132.9
D 2 250 126760 949.77 547 532 132.9

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