ASTROSAT CZTI

Data Quality Report

Orbit 43662

Creation date: 2024-06-27T22:54:13.586505
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_018T01_9000005896_43662cztM0_level2.fits modeM0/AS1A12_018T01_9000005896_43662cztM0_level2_quad_clean.evt
Size (bytes)847,203,84063,820,800
Size808.0 MB 60.9 MB
Events in quadrant A4,066,982615,737
Events in quadrant B4,064,075626,511
Events in quadrant C13,342,81346,918
Events in quadrant D9,489,061282,476

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158491
B0155581
C0431301
D0318214

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51481933.749029%
B51481993.865579%
C5148487394.658120%
D5147278254.050903%

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 6323 5149 33 33 0.52% 0.64%
B 6323 5149 93 93 1.47% 1.81%
C 6323 5149 4744 4744 75.03% 92.13%
D 6322 5147 2315 2315 36.62% 44.98%

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 715436 5845.31 600 589 122.3
A 15 222 510067 4166.0 600 589 122.3
A 15 223 319319 2606.26 600 589 122.3
B 4 206 1035743 9072.8 593 575 114.1
B 0 230 237375 2075.45 593 575 114.1
B 5 235 120216 1048.6 593 575 114.1
C 15 142 10977991 218876.77 217 218 50.2
C 15 157 828654 16517.5 217 218 50.2
C 15 158 518078 10325.18 217 218 50.2
D 8 192 2301577 21771.79 398 385 105.7
D 7 80 1854179 17538.91 398 385 105.7
D 5 235 560809 5302.22 398 385 105.7

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