ASTROSAT CZTI

Data Quality Report

Orbit 20160610_G05_194T01_9000000490_level2

Creation date: 2025-10-30T20:45:59.039183
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/AS1G05_194T01_9000000490cztM0_level2.fits modeM0/AS1G05_194T01_9000000490cztM0_level2_quad_clean.evt
Size (bytes)417,882,240406,823,040
Size398.5 MB 388.0 MB
Events in quadrant A2,521,0822,419,678
Events in quadrant B2,444,7802,424,771
Events in quadrant C2,450,3602,269,589
Events in quadrant D2,134,7822,102,322

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09240
B09240
C09240
D09240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0790
B0790
C0790
D0800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01092730
B0999950
C01051830
D01010470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A452099532.107987%
B452085531.223235%
C452097581.676657%
D452098981.986330%

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 64149 45201 0 0 0.00% 0.00%
B 64149 45202 0 0 0.00% 0.00%
C 64149 45205 0 0 0.00% 0.00%
D 64149 45177 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 2522 11.34 654 610 168.6
A 0 29 2417 10.72 654 610 168.6
A 7 110 2115 8.92 654 610 168.6
B 2 9 2146 11.39 646 612 134.7
B 12 226 1807 8.87 646 612 134.7
B 14 254 1690 8.0 646 612 134.7
C 1 80 1744 6.52 647 597 175.9
C 12 241 1722 6.4 647 597 175.9
C 1 81 1719 6.38 647 597 175.9
D 11 82 1935 8.35 610 553 165.6
D 7 5 1583 6.22 610 553 165.6
D 6 231 1494 5.68 610 553 165.6

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