ASTROSAT CZTI

Data Quality Report

Orbit 48068

Creation date: 2024-08-19T09:51:01.042327
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/AS1A13_024T01_9000006394_48068cztM0_level2.fits modeM0/AS1A13_024T01_9000006394_48068cztM0_level2_quad_clean.evt
Size (bytes)523,961,280105,431,040
Size499.7 MB 100.5 MB
Events in quadrant A7,210,438683,271
Events in quadrant B3,338,231757,730
Events in quadrant C2,984,471720,603
Events in quadrant D5,363,205582,255

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257752
B0143922
C0133242
D0202442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64306179.595645%
B64311171.819313%
C6430480.746501%
D643089413.903577%

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 8640 6432 177 177 2.05% 2.75%
B 8641 6432 14 14 0.16% 0.22%
C 8640 6432 2 2 0.02% 0.03%
D 8640 6432 729 729 8.44% 11.33%

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 10 83 4063380 26502.0 738 724 153.3
A 13 248 245423 1596.25 738 724 153.3
A 7 3 22826 144.18 738 724 153.3
B 7 221 222693 1487.11 758 736 149.3
B 0 200 50380 332.62 758 736 149.3
B 0 198 25383 165.14 758 736 149.3
C 14 254 36403 201.51 748 752 176.9
C 9 237 13224 70.5 748 752 176.9
C 12 2 9791 51.09 748 752 176.9
D 2 249 2088390 11979.13 695 674 174.3
D 2 165 167519 957.34 695 674 174.3
D 2 120 157284 898.61 695 674 174.3

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