ASTROSAT CZTI

Data Quality Report

Orbit 44628

Creation date: 2024-06-27T23:04:42.497011
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_072T01_9000006008_44628cztM0_level2.fits modeM0/AS1A13_072T01_9000006008_44628cztM0_level2_quad_clean.evt
Size (bytes)471,813,12098,124,480
Size450.0 MB 93.6 MB
Events in quadrant A4,661,388669,025
Events in quadrant B2,870,878689,128
Events in quadrant C2,944,136651,437
Events in quadrant D6,498,044521,198

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190891
B0130991
C0133521
D0237871

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63131091.726596%
B6313550.871218%
C6313560.887058%
D6313103316.363060%

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 7163 6314 17 17 0.24% 0.27%
B 7163 6314 10 10 0.14% 0.16%
C 7163 6314 20 20 0.28% 0.32%
D 7163 6314 902 902 12.59% 14.29%

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 1733721 12162.77 686 670 142.5
A 15 223 179233 1253.18 686 670 142.5
A 10 248 38060 262.41 686 670 142.5
B 0 186 70252 507.64 687 666 137.1
B 5 172 29675 211.63 687 666 137.1
B 12 111 17272 121.14 687 666 137.1
C 12 2 138211 861.78 678 680 159.6
C 12 250 73354 455.38 678 680 159.6
C 3 233 41827 257.83 678 680 159.6
D 13 153 1594472 9863.84 629 607 161.6
D 13 249 1106215 6842.2 629 607 161.6
D 1 52 827546 5117.62 629 607 161.6

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