ASTROSAT CZTI

Data Quality Report

Orbit 50808

Creation date: 2025-02-18T16:25:57.013608
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/AS1C07_001T01_9000006450_50808cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50808cztM0_level2_quad_clean.evt
Size (bytes)519,079,68095,261,760
Size495.0 MB 90.8 MB
Events in quadrant A4,167,871617,390
Events in quadrant B4,076,166676,434
Events in quadrant C4,652,370588,693
Events in quadrant D5,793,130530,711

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139917161441320139917149601838
B0-1-1
C0-1-1
D0-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170171
B0167891
C0184901
D0219071

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67623354.954156%
B67622764.081633%
C67623645.383023%
D67626639.804791%

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 7657 6762 248 248 3.24% 3.67%
B 7657 6762 176 176 2.30% 2.60%
C 7657 6762 326 326 4.26% 4.82%
D 7657 6762 563 563 7.35% 8.33%

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 9 13 346526 1961.18 709 691 176.3
A 8 38 238302 1347.46 709 691 176.3
A 6 161 123679 697.45 709 691 176.3
B 4 206 642676 4240.72 706 682 151.4
B 8 128 300767 1982.22 706 682 151.4
B 7 0 83865 549.47 706 682 151.4
C 9 38 581101 2991.29 685 680 194.0
C 13 3 313103 1610.12 685 680 194.0
C 5 10 176631 906.79 685 680 194.0
D 10 181 663986 3514.58 666 643 188.7
D 2 216 641064 3393.13 666 643 188.7
D 10 172 467423 2473.13 666 643 188.7

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