ASTROSAT CZTI

Data Quality Report

Orbit 20170615_G07_077T01_9000001306_level2

Creation date: 2025-11-14T15:08:56.266825
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_077T01_9000001306cztM0_level2.fits modeM0/AS1G07_077T01_9000001306cztM0_level2_quad_clean.evt
Size (bytes)406,848,960362,946,240
Size388.0 MB 346.1 MB
Events in quadrant A2,398,5362,046,798
Events in quadrant B2,387,7222,105,900
Events in quadrant C2,446,3222,026,476
Events in quadrant D2,073,3661,798,994

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01147040
B0926270
C0900340
D01064300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08920
B08900
C09080
D09120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0770
B0710
C0730
D0720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4376811492.625206%
B439267251.650503%
C439644370.993995%
D4377617033.890260%

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 56528 45233 0 0 0.00% 0.00%
B 56528 45318 0 0 0.00% 0.00%
C 56528 45343 0 0 0.00% 0.00%
D 56528 45137 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 0 29 2312 10.95 624 585 157.7
A 7 110 2041 9.23 624 585 157.7
A 0 28 1763 7.47 624 585 157.7
B 2 9 2056 11.75 628 599 124.0
B 12 226 1611 8.16 628 599 124.0
B 3 17 1603 8.09 628 599 124.0
C 1 80 1849 7.37 645 600 169.4
C 1 81 1781 6.97 645 600 169.4
C 12 241 1720 6.61 645 600 169.4
D 3 14 1575 6.5 589 532 160.5
D 6 231 1558 6.39 589 532 160.5
D 3 31 1548 6.33 589 532 160.5

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