ASTROSAT CZTI

Data Quality Report

Orbit 20160728_G05_083T03_9000000566_level2

Creation date: 2025-11-04T11:37:28.038729
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/AS1G05_083T03_9000000566cztM0_level2.fits modeM0/AS1G05_083T03_9000000566cztM0_level2_quad_clean.evt
Size (bytes)385,378,560406,961,280
Size367.5 MB 388.1 MB
Events in quadrant A2,314,0002,471,230
Events in quadrant B2,216,3102,414,251
Events in quadrant C2,309,7242,404,138
Events in quadrant D1,970,9682,177,647

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09640
B09640
C09640
D09640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01002150
B01103010
C0915140
D01082250

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0770
B0770
C0770
D0770

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4122819544.739497%
B4124425776.248182%
C412308482.056755%
D4124720214.899750%

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 60885 41331 0 0 0.00% 0.00%
B 60885 41306 0 0 0.00% 0.00%
C 60885 41344 0 0 0.00% 0.00%
D 60885 41370 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 7 110 1983 9.19 602 563 154.6
A 0 29 1918 8.77 602 563 154.6
A 9 19 1733 7.57 602 563 154.6
B 2 9 1866 11.03 585 557 118.7
B 12 226 1592 8.72 585 557 118.7
B 14 254 1508 8.01 585 557 118.7
C 1 81 1665 6.79 609 563 162.3
C 1 80 1653 6.71 609 563 162.3
C 12 241 1570 6.2 609 563 162.3
D 11 82 1635 7.31 562 509 154.1
D 3 14 1531 6.63 562 509 154.1
D 7 3 1461 6.18 562 509 154.1

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