ASTROSAT CZTI

Data Quality Report

Orbit 39173

Creation date: 2024-06-27T22:01:22.828369
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/AS1A12_054T02_9000005444_39173cztM0_level2.fits modeM0/AS1A12_054T02_9000005444_39173cztM0_level2_quad_clean.evt
Size (bytes)469,221,12087,920,640
Size447.5 MB 83.8 MB
Events in quadrant A2,860,596650,926
Events in quadrant B2,415,952651,485
Events in quadrant C2,765,383602,103
Events in quadrant D8,927,404397,200

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116573
B0105002
C0113012
D0300692

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5140190.369650%
B5140120.233463%
C5140420.817121%
D5140200438.988327%

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 7262 5141 8 8 0.11% 0.16%
B 7262 5141 1 1 0.01% 0.02%
C 7262 5141 32 32 0.44% 0.62%
D 7262 5141 1889 1889 26.01% 36.74%

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 436094 3538.2 600 590 123.1
A 13 248 50677 406.93 600 590 123.1
A 2 79 34461 275.18 600 590 123.1
B 5 172 47009 409.3 591 577 113.4
B 0 213 42259 367.43 591 577 113.4
B 12 111 13403 113.06 591 577 113.4
C 9 187 283729 2123.56 577 580 133.3
C 15 214 216281 1617.71 577 580 133.3
C 0 10 8607 60.2 577 580 133.3
D 12 235 5967383 46692.66 523 508 127.8
D 5 222 346311 2706.02 523 508 127.8
D 12 227 221306 1727.81 523 508 127.8

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