ASTROSAT CZTI

Data Quality Report

Orbit 20170616_G07_077T03_9000001310_level2

Creation date: 2025-11-14T15:43:11.329425
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/AS1G07_077T03_9000001310cztM0_level2.fits modeM0/AS1G07_077T03_9000001310cztM0_level2_quad_clean.evt
Size (bytes)365,569,920362,920,320
Size348.6 MB 346.1 MB
Events in quadrant A2,150,0102,117,733
Events in quadrant B2,141,3302,190,002
Events in quadrant C2,188,9282,105,715
Events in quadrant D1,843,9121,832,568

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570
B0600
C0580
D0590

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0998460
B0834920
C0822310
D0971900

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08150
B08160
C08240
D08180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3979912383.110631%
B400147221.804368%
C400754661.162820%
D3987919454.877254%

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 53198 40767 0 0 0.00% 0.00%
B 53199 41078 0 0 0.00% 0.00%
C 53199 41147 0 0 0.00% 0.00%
D 53199 40912 0 0 0.00% 0.00%

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 0 29 2106 11.24 558 523 140.9
A 7 110 1756 8.75 558 523 140.9
A 9 19 1603 7.67 558 523 140.9
B 2 9 1865 11.77 564 536 112.9
B 5 128 1521 8.72 564 536 112.9
B 14 254 1509 8.62 564 536 112.9
C 12 241 1610 7.01 578 536 153.2
C 3 126 1451 5.97 578 536 153.2
C 9 242 1430 5.84 578 536 153.2
D 3 14 1397 6.49 524 475 142.1
D 6 231 1353 6.18 524 475 142.1
D 10 189 1336 6.06 524 475 142.1

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