ASTROSAT CZTI

Data Quality Report

Orbit 39491

Creation date: 2024-06-27T22:05:15.432204
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/AS1C07_001T02_9000005486_39491cztM0_level2.fits modeM0/AS1C07_001T02_9000005486_39491cztM0_level2_quad_clean.evt
Size (bytes)1,134,993,600302,042,880
Size1.1 GB 288.1 MB
Events in quadrant A10,700,9262,026,609
Events in quadrant B9,173,3882,087,437
Events in quadrant C9,721,9912,022,777
Events in quadrant D11,074,8391,813,246

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0427675
B0394594
C0403114
D0452674

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0810
B0810
C0810
D0810

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03560
B03560
C03560
D03560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A173472811.619877%
B173474202.421168%
C173472131.227878%
D173476083.504929%

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 25478 17351 207 207 0.81% 1.19%
B 25478 17351 300 300 1.18% 1.73%
C 25478 17351 175 175 0.69% 1.01%
D 25478 17351 547 547 2.15% 3.15%

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 1178592 3129.72 1886 1854 376.0
A 15 174 789244 2094.19 1886 1854 376.0
A 15 222 544199 1442.45 1886 1854 376.0
B 5 172 1346646 3812.57 1886 1832 352.7
B 5 255 393933 1111.61 1886 1832 352.7
B 12 111 44119 119.88 1886 1832 352.7
C 15 208 1118604 2629.88 1866 1884 424.6
C 15 214 715668 1680.96 1866 1884 424.6
C 9 187 537010 1260.22 1866 1884 424.6
D 12 0 1642128 3760.15 1826 1780 436.2
D 13 249 874466 2000.45 1826 1780 436.2
D 2 249 779090 1781.82 1826 1780 436.2

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