ASTROSAT CZTI

Data Quality Report

Orbit 44124

Creation date: 2024-06-27T22:59:27.736444
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_012T02_9000005950_44124cztM0_level2.fits modeM0/AS1A13_012T02_9000005950_44124cztM0_level2_quad_clean.evt
Size (bytes)605,810,88098,375,040
Size577.7 MB 93.8 MB
Events in quadrant A8,845,924473,894
Events in quadrant B3,198,297761,813
Events in quadrant C3,361,750719,813
Events in quadrant D6,529,266582,692

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0308565
B0136711
C0141641
D0237621

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6308232736.889664%
B6309731.157077%
C63091342.123950%
D630993914.883500%

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 7448 6308 1637 1637 21.98% 25.95%
B 7449 6310 8 8 0.11% 0.13%
C 7449 6309 63 63 0.85% 1.00%
D 7449 6310 787 787 10.57% 12.47%

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 15 223 4309183 33917.74 611 600 127.0
A 10 83 1055561 8304.79 611 600 127.0
A 14 238 762770 5999.9 611 600 127.0
B 5 172 62845 420.97 754 731 147.6
B 4 173 57099 382.02 754 731 147.6
B 5 235 47040 313.85 754 731 147.6
C 14 254 350462 2009.36 740 744 174.0
C 3 233 91628 522.19 740 744 174.0
C 8 13 12205 65.85 740 744 174.0
D 5 235 1683651 9437.31 707 687 178.3
D 1 52 749760 4200.47 707 687 178.3
D 12 233 692550 3879.66 707 687 178.3

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