ASTROSAT CZTI

Data Quality Report

Orbit 24999

Creation date: 2024-06-27T19:12:32.344321
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/AS1A07_127T03_9000003662_24999cztM0_level2.evt modeM0/AS1A07_127T03_9000003662_24999cztM0_level2_quad_clean.evt
Size (bytes)505,071,360111,916,800
Size481.7 MB 106.7 MB
Events in quadrant A3,144,636742,513
Events in quadrant B3,256,666771,002
Events in quadrant C5,226,029724,582
Events in quadrant D3,252,544722,834

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131092
B0134762
C0197872
D0135162

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6136310.505215%
B6137651.059149%
C61373896.338602%
D6137290.472544%

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 7476 6138 0 0 0.00% 0.00%
B 7477 6139 0 0 0.00% 0.00%
C 7477 6139 102 102 1.36% 1.66%
D 7477 6139 3 3 0.04% 0.05%

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 13 254 9123 51.27 816 802 162.3
A 0 226 7026 38.35 816 802 162.3
A 3 137 6914 37.66 816 802 162.3
B 0 190 29445 186.32 822 804 153.7
B 12 111 17955 111.57 822 804 153.7
B 11 111 16030 99.05 822 804 153.7
C 7 247 1967303 10679.23 795 802 184.1
C 14 238 126077 680.32 795 802 184.1
C 2 16 28647 151.21 795 802 184.1
D 2 244 112004 573.91 809 789 193.8
D 8 195 69031 352.15 809 789 193.8
D 2 234 24386 121.77 809 789 193.8

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