ASTROSAT CZTI

Data Quality Report

Orbit 39600

Creation date: 2024-06-27T22:06:38.381623
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_39600cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39600cztM0_level2_quad_clean.evt
Size (bytes)1,122,261,120244,546,560
Size1.0 GB 233.2 MB
Events in quadrant A8,276,5531,682,471
Events in quadrant B7,059,0411,728,360
Events in quadrant C14,893,3871,514,702
Events in quadrant D10,108,0141,403,505

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0338534
B0323253
C0548733
D0412233

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15581560.359412%
B15581840.539118%
C1558113998.978885%
D1558110436.694050%

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 19819 15584 36 36 0.18% 0.23%
B 19819 15584 37 37 0.19% 0.24%
C 19819 15584 1290 1290 6.51% 8.28%
D 19819 15584 877 877 4.43% 5.63%

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 1102301 3237.4 1685 1650 340.0
A 15 222 368373 1078.66 1685 1650 340.0
A 13 248 206613 602.87 1685 1650 340.0
B 5 255 420418 1305.21 1671 1621 320.9
B 12 111 41096 123.03 1671 1621 320.9
B 11 111 38655 115.42 1671 1621 320.9
C 9 187 5454906 14764.91 1596 1602 369.3
C 15 208 2446645 6619.99 1596 1602 369.3
C 15 214 668106 1804.57 1596 1602 369.3
D 2 249 1391284 3532.91 1604 1556 393.4
D 13 171 1195715 3035.75 1604 1556 393.4
D 12 227 645568 1637.18 1604 1556 393.4

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