ASTROSAT CZTI

Data Quality Report

Orbit 27761

Creation date: 2024-06-27T19:44:00.337973
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/AS1A10_002T05_9000004000_27761cztM0_level2.evt modeM0/AS1A10_002T05_9000004000_27761cztM0_level2_quad_clean.evt
Size (bytes)532,722,240120,337,920
Size508.0 MB 114.8 MB
Events in quadrant A3,403,930833,670
Events in quadrant B4,934,348790,998
Events in quadrant C3,498,625787,320
Events in quadrant D3,857,788781,351

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143450
B0189930
C0146540
D0158170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6476600.926498%
B64765879.064237%
C64761201.852996%
D6475781.204633%

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 7701 6476 0 0 0.00% 0.00%
B 7701 6476 346 346 4.49% 5.34%
C 7701 6476 1 1 0.01% 0.02%
D 7700 6475 32 32 0.42% 0.49%

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 10278 54.08 881 868 174.0
A 3 137 7741 39.5 881 868 174.0
A 0 226 7521 38.24 881 868 174.0
B 3 64 1388751 9055.29 828 809 153.3
B 10 245 237945 1547.14 828 809 153.3
B 4 52 30652 194.7 828 809 153.3
C 14 238 137720 710.71 835 840 192.6
C 3 233 94180 484.64 835 840 192.6
C 0 207 8095 37.67 835 840 192.6
D 1 52 409378 2018.7 855 833 202.4
D 7 69 83587 408.9 855 833 202.4
D 13 104 52487 255.23 855 833 202.4

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