ASTROSAT CZTI

Data Quality Report

Orbit 20170401_G07_046T01_9000001124_level2

Creation date: 2025-11-10T10:11:38.633995
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/AS1G07_046T01_9000001124cztM0_level2.fits modeM0/AS1G07_046T01_9000001124cztM0_level2_quad_clean.evt
Size (bytes)425,638,080336,182,400
Size405.9 MB 320.6 MB
Events in quadrant A2,597,1741,851,167
Events in quadrant B2,485,1541,840,060
Events in quadrant C2,545,9141,793,430
Events in quadrant D2,151,9601,586,282

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0932600
B0959360
C0976900
D01223610

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09260
B09200
C09260
D09280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0630
B0630
C0630
D0630

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A453014350.960244%
B452895281.165846%
C452753290.726670%
D4525926405.833094%

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 52481 45664 0 0 0.00% 0.00%
B 52481 45626 0 0 0.00% 0.00%
C 52481 45652 0 0 0.00% 0.00%
D 52481 45501 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 14 188 2600 11.58 672 627 170.3
A 0 29 2569 11.4 672 627 170.3
A 7 110 2231 9.42 672 627 170.3
B 2 9 2098 11.05 656 622 133.6
B 12 226 1669 7.84 656 622 133.6
B 14 254 1650 7.69 656 622 133.6
C 1 80 1885 7.06 672 622 178.9
C 1 81 1836 6.79 672 622 178.9
C 12 241 1753 6.32 672 622 178.9
D 6 231 1631 6.6 612 556 162.7
D 3 14 1590 6.35 612 556 162.7
D 1 19 1571 6.24 612 556 162.7

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