ASTROSAT CZTI

Data Quality Report

Orbit 09891

Creation date: 2024-06-27T15:51:58.808918
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/AS1G07_028T01_9000001406_09891cztM0_level2.evt modeM0/AS1G07_028T01_9000001406_09891cztM0_level2_quad_clean.evt
Size (bytes)270,694,08044,239,680
Size258.2 MB 42.2 MB
Events in quadrant A2,010,494262,166
Events in quadrant B1,975,672269,538
Events in quadrant C1,947,238264,639
Events in quadrant D1,984,631254,565

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0872663
B0861750
C0867861
D0886461

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0842
B0840
C0840
D0840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A40892125.184642%
B40952135.201465%
C40901754.278729%
D40911674.082132%

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 4264 4121 0 0 0.00% 0.00%
B 4264 4120 0 0 0.00% 0.00%
C 4264 4119 0 0 0.00% 0.00%
D 4264 4121 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 15 239 55498 523.27 502 490 105.1
A 13 251 21698 201.74 502 490 105.1
A 0 226 4514 38.28 502 490 105.1
B 12 111 12350 117.77 505 493 100.7
B 11 111 10349 97.9 505 493 100.7
B 14 111 8455 79.08 505 493 100.7
C 9 221 11318 91.85 493 495 117.8
C 10 22 5513 42.58 493 495 117.8
C 13 61 3705 27.24 493 495 117.8
D 9 85 40539 313.83 486 475 127.7
D 10 172 29503 227.38 486 475 127.7
D 2 16 21227 162.56 486 475 127.7

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