ASTROSAT CZTI

Data Quality Report

Orbit 20230919_A09_107T01_9000005854_level2

Creation date: 2023-09-21T10:24:19.921781
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/AS1A09_107T01_9000005854cztM0_level2.fits modeM0/AS1A09_107T01_9000005854cztM0_level2_quad_clean.evt
Size (bytes)464,906,880703,656,000
Size443.4 MB 671.1 MB
Events in quadrant A2,680,6344,451,159
Events in quadrant B2,639,5244,562,319
Events in quadrant C2,761,5704,578,133
Events in quadrant D2,369,9264,095,781

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01486590
B01165480
C01080780
D01335510

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02110
B02110
C02110
D02110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010840
B010840
C010840
D010840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5283827545.212158%
B5283811612.197282%
C52838920.174117%
D5283814602.763163%

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 74023 52616 0 0 0.00% 0.00%
B 74023 52452 0 0 0.00% 0.00%
C 74023 52836 0 0 0.00% 0.00%
D 74023 52826 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 9 19 2238 8.95 700 660 176.4
A 7 110 2224 8.87 700 660 176.4
A 0 29 2160 8.5 700 660 176.4
B 2 9 2148 10.96 697 667 135.1
B 3 80 1887 9.03 697 667 135.1
B 3 17 1813 8.48 697 667 135.1
C 1 81 2307 8.62 729 685 188.2
C 3 202 2296 8.56 729 685 188.2
C 3 203 2253 8.33 729 685 188.2
D 10 189 1820 6.56 679 621 182.7
D 7 3 1805 6.48 679 621 182.7
D 4 160 1765 6.26 679 621 182.7

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