ASTROSAT CZTI

Data Quality Report

Orbit 46991

Creation date: 2024-06-27T23:30:23.764223
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/AS1A13_071T08_9000006292_46991cztM0_level2.fits modeM0/AS1A13_071T08_9000006292_46991cztM0_level2_quad_clean.evt
Size (bytes)2,627,167,680315,936,000
Size2.4 GB 301.3 MB
Events in quadrant A21,893,0492,427,185
Events in quadrant B46,433,1421,013,786
Events in quadrant C12,185,4482,371,305
Events in quadrant D14,938,4372,146,502

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04740
B04740
C04740
D04740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0803706
B01540035
C0533535
D0610075

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A233355272.258410%
B233351518465.069638%
C233356572.815513%
D2333511104.756803%

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 25170 23341 45 45 0.18% 0.19%
B 25170 23341 13279 13279 52.76% 56.89%
C 25170 23341 503 503 2.00% 2.16%
D 25170 23341 932 932 3.70% 3.99%

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 11761545 22367.12 2543 2486 525.7
A 9 191 122545 228.37 2543 2486 525.7
A 0 243 65686 120.21 2543 2486 525.7
B 3 112 38169387 102962.95 1900 1835 370.7
B 4 171 298526 800.37 1900 1835 370.7
B 5 255 231568 619.74 1900 1835 370.7
C 14 254 1764801 3001.81 2509 2516 587.1
C 12 2 562976 954.67 2509 2516 587.1
C 12 250 41859 67.02 2509 2516 587.1
D 1 52 2505304 4056.79 2474 2400 617.0
D 13 249 1027085 1660.84 2474 2400 617.0
D 2 249 722771 1167.6 2474 2400 617.0

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