ASTROSAT CZTI

Data Quality Report

Orbit 33282

Creation date: 2024-06-27T20:47:01.947824
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/AS1T04_072T01_9000004780_33282cztM0_level2.evt modeM0/AS1T04_072T01_9000004780_33282cztM0_level2_quad_clean.evt
Size (bytes)581,774,40076,942,080
Size554.8 MB 73.4 MB
Events in quadrant A2,663,289521,753
Events in quadrant B4,513,390478,534
Events in quadrant C4,746,167464,396
Events in quadrant D5,323,197478,488

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115043
B0169912
C0175392
D0198012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5513220.399057%
B55135339.668057%
C551364111.627063%
D55132183.954290%

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 7156 5514 5 5 0.07% 0.09%
B 7156 5514 407 407 5.69% 7.38%
C 7156 5514 575 575 8.04% 10.43%
D 7156 5514 186 186 2.60% 3.37%

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 12 16 73012 558.65 648 637 129.6
A 15 169 48851 372.16 648 637 129.6
A 12 194 15183 112.28 648 637 129.6
B 5 172 1313142 11250.4 615 600 116.7
B 0 219 486597 4165.7 615 600 116.7
B 0 245 73724 626.78 615 600 116.7
C 1 23 1685393 12194.73 598 604 138.2
C 10 49 239899 1732.05 598 604 138.2
C 15 214 226635 1636.04 598 604 138.2
D 8 195 1889232 11322.97 623 608 166.8
D 12 218 218924 1308.88 623 608 166.8
D 12 6 200730 1199.8 623 608 166.8

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