ASTROSAT CZTI

Data Quality Report

Orbit 20161102_G06_027T01_9000000770_level2

Creation date: 2025-11-07T13:49:19.285489
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/AS1G06_027T01_9000000770cztM0_level2.fits modeM0/AS1G06_027T01_9000000770cztM0_level2_quad_clean.evt
Size (bytes)260,291,520243,498,240
Size248.2 MB 232.2 MB
Events in quadrant A1,580,4981,439,670
Events in quadrant B1,552,7841,490,378
Events in quadrant C1,580,2541,450,782
Events in quadrant D1,192,4691,020,968

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0642670
B0619920
C0602660
D0898520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0400
C0410
D0410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06140
B05960
C06090
D06110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2909010013.441045%
B292136362.177113%
C291983441.178163%
D26765274410.252195%

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 46104 32157 0 0 0.00% 0.00%
B 46104 32201 0 0 0.00% 0.00%
C 46104 32172 0 0 0.00% 0.00%
D 46103 29783 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 1541 10.9 409 381 106.4
A 14 188 1480 10.33 409 381 106.4
A 7 110 1292 8.56 409 381 106.4
B 2 9 1324 10.82 409 386 86.7
B 12 226 1078 7.98 409 386 86.7
B 5 128 1063 7.81 409 386 86.7
C 12 241 1217 7.41 417 385 112.3
C 1 65 1088 6.26 417 385 112.3
C 2 191 1087 6.25 417 385 112.3
D 3 14 881 6.06 340 306 95.0
D 6 83 874 5.98 340 306 95.0
D 11 82 852 5.75 340 306 95.0

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