ASTROSAT CZTI

Data Quality Report

Orbit 44178

Creation date: 2024-06-27T23:00:07.586620
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_079T01_9000005956_44178cztM0_level2.fits modeM0/AS1A13_079T01_9000005956_44178cztM0_level2_quad_clean.evt
Size (bytes)992,874,240215,858,880
Size946.9 MB 205.9 MB
Events in quadrant A9,363,2761,435,161
Events in quadrant B8,268,9641,429,480
Events in quadrant C7,478,1531,415,039
Events in quadrant D10,499,8871,237,969

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B062
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037977238
B034904200
C033197201
D041716342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02960
B02962
C02960
D02973

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A147514883.308250%
B147568825.977230%
C147524613.125000%
D1474310817.332293%

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 16887 14778 20 20 0.12% 0.14%
B 16887 14787 241 241 1.43% 1.63%
C 16887 14781 74 74 0.44% 0.50%
D 16887 14770 649 649 3.84% 4.39%

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 2532888 7109.3 1692 1653 356.0
A 15 223 117610 325.68 1692 1653 356.0
A 7 3 104902 289.99 1692 1653 356.0
B 5 172 952697 2876.62 1656 1602 330.6
B 0 200 275176 827.43 1656 1602 330.6
B 0 189 235611 707.77 1656 1602 330.6
C 14 254 726033 1835.13 1667 1679 394.7
C 9 54 68834 170.14 1667 1679 394.7
C 3 233 58778 144.66 1667 1679 394.7
D 13 249 1600578 3892.93 1616 1562 410.7
D 1 52 1217184 2959.53 1616 1562 410.7
D 1 47 429682 1042.29 1616 1562 410.7

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