ASTROSAT CZTI

Data Quality Report

Orbit 45460

Creation date: 2024-06-27T23:12:33.541906
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_038T04_9000006090_45460cztM0_level2.fits modeM0/AS1A13_038T04_9000006090_45460cztM0_level2_quad_clean.evt
Size (bytes)250,447,68052,171,200
Size238.8 MB 49.8 MB
Events in quadrant A2,754,547351,111
Events in quadrant B2,410,051341,049
Events in quadrant C1,586,528356,750
Events in quadrant D2,278,469311,419

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103251
B092061
C067481
D089001

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A30821735.613238%
B308240413.108371%
C3082702.271252%
D30822116.846204%

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 4272 3083 14 14 0.33% 0.45%
B 4272 3083 211 211 4.94% 6.84%
C 4272 3083 7 7 0.16% 0.23%
D 4272 3083 111 111 2.60% 3.60%

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 1286726 16322.29 377 370 78.8
A 0 243 5088 59.87 377 370 78.8
A 3 137 4325 50.18 377 370 78.8
B 15 201 847462 11522.93 365 353 73.5
B 5 172 44857 605.37 365 353 73.5
B 12 48 32508 437.39 365 353 73.5
C 2 14 84995 953.72 374 376 88.7
C 14 254 21270 235.49 374 376 88.7
C 1 3 9630 104.3 374 376 88.7
D 1 52 595888 6430.14 366 355 92.6
D 11 241 164982 1777.53 366 355 92.6
D 2 249 44784 479.71 366 355 92.6

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