ASTROSAT CZTI

Data Quality Report

Orbit 20171012_A04_113T02_9000001606_level2

Creation date: 2025-11-17T17:05:22.369777
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/AS1A04_113T02_9000001606cztM0_level2.fits modeM0/AS1A04_113T02_9000001606cztM0_level2_quad_clean.evt
Size (bytes)467,035,200427,746,240
Size445.4 MB 407.9 MB
Events in quadrant A2,500,1102,033,755
Events in quadrant B2,792,6712,574,375
Events in quadrant C2,942,7182,593,208
Events in quadrant D2,501,6002,352,526

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010100
B010120
C010100
D010120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02321560
B01283340
C01024050
D01267680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0830
B0830
C0830
D0830

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A495041408528.452246%
B4952828555.764416%
C495425171.043559%
D4951415603.150624%

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 58114 49416 0 0 0.00% 0.00%
B 58115 49623 0 0 0.00% 0.00%
C 58115 49634 0 0 0.00% 0.00%
D 58115 49553 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 2452 11.36 649 608 162.3
A 0 29 2303 10.44 649 608 162.3
A 7 110 2050 8.88 649 608 162.3
B 2 9 2509 12.33 736 703 146.4
B 3 17 1904 8.2 736 703 146.4
B 2 8 1887 8.09 736 703 146.4
C 1 81 2099 6.81 777 725 201.7
C 1 80 2062 6.63 777 725 201.7
C 12 241 2007 6.36 777 725 201.7
D 6 231 1915 6.65 714 653 189.9
D 3 14 1900 6.57 714 653 189.9
D 10 189 1779 5.93 714 653 189.9

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