ASTROSAT CZTI

Data Quality Report

Orbit 39611

Creation date: 2024-06-27T22:06:47.828420
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/AS1A12_018T01_9000005488_39611cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39611cztM0_level2_quad_clean.evt
Size (bytes)465,223,68091,296,000
Size443.7 MB 87.1 MB
Events in quadrant A4,372,224599,427
Events in quadrant B2,798,770640,399
Events in quadrant C6,056,445563,511
Events in quadrant D3,542,954555,375

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170532
B0126341
C0220701
D0146751

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58023305.687694%
B5802921.585660%
C580265411.271975%
D58022123.653912%

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 7145 5803 270 270 3.78% 4.65%
B 7145 5803 65 65 0.91% 1.12%
C 7145 5803 676 676 9.46% 11.65%
D 7145 5803 135 135 1.89% 2.33%

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 15 222 1021004 8260.11 604 590 123.5
A 10 83 462375 3738.09 604 590 123.5
A 0 8 367969 2973.88 604 590 123.5
B 5 255 308008 2564.94 612 594 119.9
B 5 172 63455 524.49 612 594 119.9
B 12 111 15036 120.5 612 594 119.9
C 9 187 3456269 25359.13 584 587 136.3
C 15 214 250256 1832.16 584 587 136.3
C 15 208 61157 444.48 584 587 136.3
D 13 249 274920 1882.17 593 574 145.8
D 2 249 266977 1827.68 593 574 145.8
D 12 227 212946 1456.99 593 574 145.8

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